From patchwork Thu Oct 10 16:27:16 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Herring X-Patchwork-Id: 1995552 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20201202 header.b=A1iXhaW5; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2604:1380:45e3:2400::1; helo=sv.mirrors.kernel.org; envelope-from=devicetree+bounces-110016-incoming-dt=patchwork.ozlabs.org@vger.kernel.org; receiver=patchwork.ozlabs.org) Received: from sv.mirrors.kernel.org (sv.mirrors.kernel.org [IPv6:2604:1380:45e3:2400::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (secp384r1)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4XPZvC5Jqvz1xtv for ; Fri, 11 Oct 2024 03:28:39 +1100 (AEDT) Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sv.mirrors.kernel.org (Postfix) with ESMTPS id 29326281D44 for ; Thu, 10 Oct 2024 16:28:38 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 383691CDA2D; Thu, 10 Oct 2024 16:28:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="A1iXhaW5" X-Original-To: devicetree@vger.kernel.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E22001CF298; Thu, 10 Oct 2024 16:28:01 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728577682; cv=none; b=epFqavzRPwF1x8o0DGr2Wxl8W6cx+lizJpoRg2OaJNn2G2y60oQLGldGmj05jkI0GuLgTindJZ79Pb69CIogIwac+5QYl2Wq+qyJzJNXfM5Q5eK7OJuN2cd7m4CejUfJ0WVGskbPYYHTh/2+xFUshDZhDb/gXNkLz2LxtzyJrow= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728577682; c=relaxed/simple; bh=WZvhT5fTmftqx804frNdKOlCWKv78SUumi8ZT/rAffo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=szHISHjzMA3chHZJkXppcnAB49VrEN+WTiUhQ1SUXmtUfHjErwR5iNEv6EJTtCVhbwpwVcM6MdZ1WW45MwGtftEV34i6XO2+X8I9jTzKMtGsTvDsKDhL3mGn5mTrrtB1x2KMVwq4t2q+OC0DHfeDshieyBKxQFBTAW+Az2Tdrec= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=A1iXhaW5; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90F6CC4CEC5; Thu, 10 Oct 2024 16:28:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728577681; bh=WZvhT5fTmftqx804frNdKOlCWKv78SUumi8ZT/rAffo=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=A1iXhaW5Ud4z1mRPFg24NbYe6i3KKRTMWuG5DmYdiYmywfoK2kovzq7ZaWMCEeyNQ exVlH5iojyR2eNK+Q5IwpjlK3gYeWgus6H3bHBnDRMVCs1n9QPJEejcJL5VOPGxXGO SZ207Utsyx+DgQLjziDEkJEBD5y9trTBpP/bVKcxuLeE2yCx2jSNIQmexCc9QIe7+6 cIpc4ddvtdIecuA04BZk18CY3KafhbKWcjwjhACwRzIYLCBvd19PQN+X8Mmje2yO9u 9jFAMnK349PgJ8k5N2tKRxztL8uE2WA2G4NJTAUNfaafPot7WyQuyLLfzpwQxTYsh3 QTeMjN+eK+EEA== From: "Rob Herring (Arm)" Date: Thu, 10 Oct 2024 11:27:16 -0500 Subject: [PATCH 3/7] of: Constify struct device_node function arguments Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241010-dt-const-v1-3-87a51f558425@kernel.org> References: <20241010-dt-const-v1-0-87a51f558425@kernel.org> In-Reply-To: <20241010-dt-const-v1-0-87a51f558425@kernel.org> To: Bjorn Helgaas , Andrew Morton , Saravana Kannan Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org X-Mailer: b4 0.15-dev Functions which don't change the refcount or otherwise modify struct device_node can make struct device_node const. Signed-off-by: Rob Herring (Arm) Reviewed-by: Krzysztof Kozlowski --- drivers/of/address.c | 10 +++++----- drivers/of/base.c | 8 ++++---- drivers/of/cpu.c | 2 +- drivers/of/irq.c | 4 ++-- drivers/of/of_private.h | 2 +- drivers/of/overlay.c | 14 +++++++------- drivers/of/resolver.c | 4 ++-- include/linux/of.h | 14 +++++++------- include/linux/of_address.h | 4 ++-- include/linux/of_irq.h | 4 ++-- 10 files changed, 33 insertions(+), 33 deletions(-) diff --git a/drivers/of/address.c b/drivers/of/address.c index 286f0c161e33..aa1a4e381461 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -147,7 +147,7 @@ static unsigned int of_bus_pci_get_flags(const __be32 *addr) * PCI bus specific translator */ -static bool of_node_is_pcie(struct device_node *np) +static bool of_node_is_pcie(const struct device_node *np) { bool is_pcie = of_node_name_eq(np, "pcie"); @@ -230,8 +230,8 @@ static int __of_address_resource_bounds(struct resource *r, u64 start, u64 size) * To guard against that we try to register the IO range first. * If that fails we know that pci_address_to_pio() will do too. */ -int of_pci_range_to_resource(struct of_pci_range *range, - struct device_node *np, struct resource *res) +int of_pci_range_to_resource(const struct of_pci_range *range, + const struct device_node *np, struct resource *res) { u64 start; int err; @@ -399,7 +399,7 @@ static struct of_bus *of_match_bus(struct device_node *np) return NULL; } -static int of_empty_ranges_quirk(struct device_node *np) +static int of_empty_ranges_quirk(const struct device_node *np) { if (IS_ENABLED(CONFIG_PPC)) { /* To save cycles, we cache the result for global "Mac" setting */ @@ -1030,7 +1030,7 @@ EXPORT_SYMBOL_GPL(of_dma_is_coherent); * This is currently only enabled on builds that support Apple ARM devices, as * an optimization. */ -static bool of_mmio_is_nonposted(struct device_node *np) +static bool of_mmio_is_nonposted(const struct device_node *np) { if (!IS_ENABLED(CONFIG_ARCH_APPLE)) return false; diff --git a/drivers/of/base.c b/drivers/of/base.c index 20603d3c9931..d1aebb979522 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -771,7 +771,7 @@ struct device_node *of_get_child_by_name(const struct device_node *node, } EXPORT_SYMBOL(of_get_child_by_name); -struct device_node *__of_find_node_by_path(struct device_node *parent, +struct device_node *__of_find_node_by_path(const struct device_node *parent, const char *path) { struct device_node *child; @@ -1840,7 +1840,7 @@ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)) * * Return: The alias id if found. */ -int of_alias_get_id(struct device_node *np, const char *stem) +int of_alias_get_id(const struct device_node *np, const char *stem) { struct alias_prop *app; int id = -ENODEV; @@ -1898,7 +1898,7 @@ EXPORT_SYMBOL_GPL(of_alias_get_highest_id); * * Return: TRUE if console successfully setup. Otherwise return FALSE. */ -bool of_console_check(struct device_node *dn, char *name, int index) +bool of_console_check(const struct device_node *dn, char *name, int index) { if (!dn || dn != of_stdout || console_set_on_cmdline) return false; @@ -1986,7 +1986,7 @@ int of_find_last_cache_level(unsigned int cpu) * * Return: 0 on success or a standard error code on failure. */ -int of_map_id(struct device_node *np, u32 id, +int of_map_id(const struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out) { diff --git a/drivers/of/cpu.c b/drivers/of/cpu.c index d17b2f851082..5214dc3d05ae 100644 --- a/drivers/of/cpu.c +++ b/drivers/of/cpu.c @@ -188,7 +188,7 @@ EXPORT_SYMBOL(of_cpu_node_to_id); * Return: An idle state node if found at @index. The refcount is incremented * for it, so call of_node_put() on it when done. Returns NULL if not found. */ -struct device_node *of_get_cpu_state_node(struct device_node *cpu_node, +struct device_node *of_get_cpu_state_node(const struct device_node *cpu_node, int index) { struct of_phandle_args args; diff --git a/drivers/of/irq.c b/drivers/of/irq.c index a494f56a0d0e..67fc0ceaa5f5 100644 --- a/drivers/of/irq.c +++ b/drivers/of/irq.c @@ -720,7 +720,7 @@ struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, * Returns: the MSI domain for this device (or NULL on failure). */ struct irq_domain *of_msi_get_domain(struct device *dev, - struct device_node *np, + const struct device_node *np, enum irq_domain_bus_token token) { struct of_phandle_iterator it; @@ -742,7 +742,7 @@ EXPORT_SYMBOL_GPL(of_msi_get_domain); * @dev: device structure to associate with an MSI irq domain * @np: device node for that device */ -void of_msi_configure(struct device *dev, struct device_node *np) +void of_msi_configure(struct device *dev, const struct device_node *np) { dev_set_msi_domain(dev, of_msi_get_domain(dev, np, DOMAIN_BUS_PLATFORM_MSI)); diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h index 04aa2a91f851..d957cc6ce437 100644 --- a/drivers/of/of_private.h +++ b/drivers/of/of_private.h @@ -127,7 +127,7 @@ void __of_prop_free(struct property *prop); struct device_node *__of_node_dup(const struct device_node *np, const char *full_name); -struct device_node *__of_find_node_by_path(struct device_node *parent, +struct device_node *__of_find_node_by_path(const struct device_node *parent, const char *path); struct device_node *__of_find_node_by_full_path(struct device_node *node, const char *path); diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c index cbdecccca097..19aaa96ee817 100644 --- a/drivers/of/overlay.c +++ b/drivers/of/overlay.c @@ -398,7 +398,7 @@ static int add_changeset_property(struct overlay_changeset *ovcs, * invalid @overlay. */ static int add_changeset_node(struct overlay_changeset *ovcs, - struct target *target, struct device_node *node) + struct target *target, const struct device_node *node) { const char *node_kbasename; const __be32 *phandle; @@ -675,8 +675,8 @@ static int build_changeset(struct overlay_changeset *ovcs) * 1) "target" property containing the phandle of the target * 2) "target-path" property containing the path of the target */ -static struct device_node *find_target(struct device_node *info_node, - struct device_node *target_base) +static struct device_node *find_target(const struct device_node *info_node, + const struct device_node *target_base) { struct device_node *node; char *target_path; @@ -735,7 +735,7 @@ static struct device_node *find_target(struct device_node *info_node, * init_overlay_changeset() must call free_overlay_changeset(). */ static int init_overlay_changeset(struct overlay_changeset *ovcs, - struct device_node *target_base) + const struct device_node *target_base) { struct device_node *node, *overlay_node; struct fragment *fragment; @@ -910,7 +910,7 @@ static void free_overlay_changeset(struct overlay_changeset *ovcs) */ static int of_overlay_apply(struct overlay_changeset *ovcs, - struct device_node *base) + const struct device_node *base) { int ret = 0, ret_revert, ret_tmp; @@ -978,7 +978,7 @@ static int of_overlay_apply(struct overlay_changeset *ovcs, */ int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size, - int *ret_ovcs_id, struct device_node *base) + int *ret_ovcs_id, const struct device_node *base) { void *new_fdt; void *new_fdt_align; @@ -1074,7 +1074,7 @@ EXPORT_SYMBOL_GPL(of_overlay_fdt_apply); * * Returns 1 if @np is @tree or is contained in @tree, else 0 */ -static int find_node(struct device_node *tree, struct device_node *np) +static int find_node(const struct device_node *tree, struct device_node *np) { if (tree == np) return 1; diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c index 5cf96776dd7d..ee7769525bb2 100644 --- a/drivers/of/resolver.c +++ b/drivers/of/resolver.c @@ -147,8 +147,8 @@ static int node_name_cmp(const struct device_node *dn1, * of offsets of the phandle reference(s) within the respective property * value(s). The values at these offsets will be fixed up. */ -static int adjust_local_phandle_references(struct device_node *local_fixups, - struct device_node *overlay, int phandle_delta) +static int adjust_local_phandle_references(const struct device_node *local_fixups, + const struct device_node *overlay, int phandle_delta) { struct device_node *overlay_child; struct property *prop_fix, *prop; diff --git a/include/linux/of.h b/include/linux/of.h index 85b60ac9eec5..7875b308f13c 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -357,7 +357,7 @@ extern struct device_node *of_get_cpu_node(int cpu, unsigned int *thread); extern struct device_node *of_cpu_device_node_get(int cpu); extern int of_cpu_node_to_id(struct device_node *np); extern struct device_node *of_get_next_cpu_node(struct device_node *prev); -extern struct device_node *of_get_cpu_state_node(struct device_node *cpu_node, +extern struct device_node *of_get_cpu_state_node(const struct device_node *cpu_node, int index); extern u64 of_get_cpu_hwid(struct device_node *cpun, unsigned int thread); @@ -395,7 +395,7 @@ extern int of_phandle_iterator_args(struct of_phandle_iterator *it, int size); extern void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)); -extern int of_alias_get_id(struct device_node *np, const char *stem); +extern int of_alias_get_id(const struct device_node *np, const char *stem); extern int of_alias_get_highest_id(const char *stem); bool of_machine_compatible_match(const char *const *compats); @@ -446,9 +446,9 @@ const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, */ const char *of_prop_next_string(struct property *prop, const char *cur); -bool of_console_check(struct device_node *dn, char *name, int index); +bool of_console_check(const struct device_node *dn, char *name, int index); -int of_map_id(struct device_node *np, u32 id, +int of_map_id(const struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out); @@ -871,7 +871,7 @@ static inline void of_property_clear_flag(struct property *p, unsigned long flag { } -static inline int of_map_id(struct device_node *np, u32 id, +static inline int of_map_id(const struct device_node *np, u32 id, const char *map_name, const char *map_mask_name, struct device_node **target, u32 *id_out) { @@ -1734,7 +1734,7 @@ struct of_overlay_notify_data { #ifdef CONFIG_OF_OVERLAY int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size, - int *ovcs_id, struct device_node *target_base); + int *ovcs_id, const struct device_node *target_base); int of_overlay_remove(int *ovcs_id); int of_overlay_remove_all(void); @@ -1744,7 +1744,7 @@ int of_overlay_notifier_unregister(struct notifier_block *nb); #else static inline int of_overlay_fdt_apply(const void *overlay_fdt, u32 overlay_fdt_size, - int *ovcs_id, struct device_node *target_base) + int *ovcs_id, const struct device_node *target_base) { return -ENOTSUPP; } diff --git a/include/linux/of_address.h b/include/linux/of_address.h index 26a19daf0d09..bd46dbcc6e88 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -83,8 +83,8 @@ extern struct of_pci_range *of_pci_range_parser_one( struct of_pci_range *range); extern int of_pci_address_to_resource(struct device_node *dev, int bar, struct resource *r); -extern int of_pci_range_to_resource(struct of_pci_range *range, - struct device_node *np, +extern int of_pci_range_to_resource(const struct of_pci_range *range, + const struct device_node *np, struct resource *res); extern int of_range_to_resource(struct device_node *np, int index, struct resource *res); diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h index d6d3eae2f145..6337ad4e5fe8 100644 --- a/include/linux/of_irq.h +++ b/include/linux/of_irq.h @@ -48,12 +48,12 @@ extern int of_irq_to_resource_table(struct device_node *dev, struct resource *res, int nr_irqs); extern struct device_node *of_irq_find_parent(struct device_node *child); extern struct irq_domain *of_msi_get_domain(struct device *dev, - struct device_node *np, + const struct device_node *np, enum irq_domain_bus_token token); extern struct irq_domain *of_msi_map_get_device_domain(struct device *dev, u32 id, u32 bus_token); -extern void of_msi_configure(struct device *dev, struct device_node *np); +extern void of_msi_configure(struct device *dev, const struct device_node *np); u32 of_msi_map_id(struct device *dev, struct device_node *msi_np, u32 id_in); #else static inline void of_irq_init(const struct of_device_id *matches) From patchwork Thu Oct 10 16:27:17 2024 Content-Type: text/plain; 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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728577682; bh=pxZtb5rJvO6gbVAARB+TZFYVl5ihVj1QIDUqSZVutzU=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=PmEpF+yXhmvjDxYhwiphYsnc+O9Xvqgu81dhJckTpFkhtMkeBCq7hQj+lvK+VDoHf TuJhCFebJkpe5RQI8C8bSaMhx0pzrgvUcTpaaB9jiBl8H8Z/d5xglqHXuXQjQAEcFd daCR2Hk/TpnP/JWmziUcAs4r3Kjx/FRInMft4xycmTBjyoEBcS7ZWApFM3IN84rHe1 Wn84H342YI4HfQSqtCw6KW2dYlNOIGIfh+MtX8w5saPime1cVaAp2xIHp6W+0vUebO 2bFtB1mU+8tTRA4jXUuAk059ujSC7l4IXj7SmilvFhfq/v0UI+8BUjO6k00Andufw3 w0Dk8ANxLLgOQ== From: "Rob Herring (Arm)" Date: Thu, 10 Oct 2024 11:27:17 -0500 Subject: [PATCH 4/7] of: Constify struct property pointers Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241010-dt-const-v1-4-87a51f558425@kernel.org> References: <20241010-dt-const-v1-0-87a51f558425@kernel.org> In-Reply-To: <20241010-dt-const-v1-0-87a51f558425@kernel.org> To: Bjorn Helgaas , Andrew Morton , Saravana Kannan Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org X-Mailer: b4 0.15-dev Most accesses to struct property do not modify it, so constify struct property pointers where ever possible in the DT core code. Signed-off-by: Rob Herring (Arm) Reviewed-by: Krzysztof Kozlowski --- drivers/of/base.c | 12 ++++++------ drivers/of/kobj.c | 6 +++--- drivers/of/of_private.h | 10 +++++----- drivers/of/overlay.c | 5 +++-- drivers/of/property.c | 10 +++++----- drivers/of/resolver.c | 8 ++++---- include/linux/of.h | 14 +++++++------- 7 files changed, 33 insertions(+), 32 deletions(-) diff --git a/drivers/of/base.c b/drivers/of/base.c index d1aebb979522..d94efee4a7fc 100644 --- a/drivers/of/base.c +++ b/drivers/of/base.c @@ -270,7 +270,7 @@ EXPORT_SYMBOL(of_find_all_nodes); const void *__of_get_property(const struct device_node *np, const char *name, int *lenp) { - struct property *pp = __of_find_property(np, name, lenp); + const struct property *pp = __of_find_property(np, name, lenp); return pp ? pp->value : NULL; } @@ -282,7 +282,7 @@ const void *__of_get_property(const struct device_node *np, const void *of_get_property(const struct device_node *np, const char *name, int *lenp) { - struct property *pp = of_find_property(np, name, lenp); + const struct property *pp = of_find_property(np, name, lenp); return pp ? pp->value : NULL; } @@ -321,7 +321,7 @@ EXPORT_SYMBOL(of_get_property); static int __of_device_is_compatible(const struct device_node *device, const char *compat, const char *type, const char *name) { - struct property *prop; + const struct property *prop; const char *cp; int index = 0, score = 0; @@ -828,7 +828,7 @@ struct device_node *__of_find_node_by_full_path(struct device_node *node, struct device_node *of_find_node_opts_by_path(const char *path, const char **opts) { struct device_node *np = NULL; - struct property *pp; + const struct property *pp; unsigned long flags; const char *separator = strchr(path, ':'); @@ -974,7 +974,7 @@ struct device_node *of_find_node_with_property(struct device_node *from, const char *prop_name) { struct device_node *np; - struct property *pp; + const struct property *pp; unsigned long flags; raw_spin_lock_irqsave(&devtree_lock, flags); @@ -1769,7 +1769,7 @@ static void of_alias_add(struct alias_prop *ap, struct device_node *np, */ void of_alias_scan(void * (*dt_alloc)(u64 size, u64 align)) { - struct property *pp; + const struct property *pp; of_aliases = of_find_node_by_path("/aliases"); of_chosen = of_find_node_by_path("/chosen"); diff --git a/drivers/of/kobj.c b/drivers/of/kobj.c index 3dbce1e6f184..aeb1709d4e85 100644 --- a/drivers/of/kobj.c +++ b/drivers/of/kobj.c @@ -84,7 +84,7 @@ int __of_add_property_sysfs(struct device_node *np, struct property *pp) return rc; } -void __of_sysfs_remove_bin_file(struct device_node *np, struct property *prop) +void __of_sysfs_remove_bin_file(struct device_node *np, const struct property *prop) { if (!IS_ENABLED(CONFIG_SYSFS)) return; @@ -93,7 +93,7 @@ void __of_sysfs_remove_bin_file(struct device_node *np, struct property *prop) kfree(prop->attr.attr.name); } -void __of_remove_property_sysfs(struct device_node *np, struct property *prop) +void __of_remove_property_sysfs(struct device_node *np, const struct property *prop) { /* at early boot, bail here and defer setup to of_init() */ if (of_kset && of_node_is_attached(np)) @@ -101,7 +101,7 @@ void __of_remove_property_sysfs(struct device_node *np, struct property *prop) } void __of_update_property_sysfs(struct device_node *np, struct property *newprop, - struct property *oldprop) + const struct property *oldprop) { /* At early boot, bail out and defer setup to of_init() */ if (!of_kset) diff --git a/drivers/of/of_private.h b/drivers/of/of_private.h index d957cc6ce437..53a4a5be9997 100644 --- a/drivers/of/of_private.h +++ b/drivers/of/of_private.h @@ -69,9 +69,9 @@ static inline void of_platform_register_reconfig_notifier(void) { } #if defined(CONFIG_OF_KOBJ) int of_node_is_attached(const struct device_node *node); int __of_add_property_sysfs(struct device_node *np, struct property *pp); -void __of_remove_property_sysfs(struct device_node *np, struct property *prop); +void __of_remove_property_sysfs(struct device_node *np, const struct property *prop); void __of_update_property_sysfs(struct device_node *np, struct property *newprop, - struct property *oldprop); + const struct property *oldprop); int __of_attach_node_sysfs(struct device_node *np); void __of_detach_node_sysfs(struct device_node *np); #else @@ -79,9 +79,9 @@ static inline int __of_add_property_sysfs(struct device_node *np, struct propert { return 0; } -static inline void __of_remove_property_sysfs(struct device_node *np, struct property *prop) {} +static inline void __of_remove_property_sysfs(struct device_node *np, const struct property *prop) {} static inline void __of_update_property_sysfs(struct device_node *np, - struct property *newprop, struct property *oldprop) {} + struct property *newprop, const struct property *oldprop) {} static inline int __of_attach_node_sysfs(struct device_node *np) { return 0; @@ -142,7 +142,7 @@ extern int __of_update_property(struct device_node *np, extern void __of_detach_node(struct device_node *np); extern void __of_sysfs_remove_bin_file(struct device_node *np, - struct property *prop); + const struct property *prop); /* illegal phandle value (set when unresolved) */ #define OF_PHANDLE_ILLEGAL 0xdeadbeef diff --git a/drivers/of/overlay.c b/drivers/of/overlay.c index 19aaa96ee817..434f6dd6a86c 100644 --- a/drivers/of/overlay.c +++ b/drivers/of/overlay.c @@ -296,10 +296,11 @@ static struct property *dup_and_fixup_symbol_prop( * invalid @overlay. */ static int add_changeset_property(struct overlay_changeset *ovcs, - struct target *target, struct property *overlay_prop, + struct target *target, const struct property *overlay_prop, bool is_symbols_prop) { - struct property *new_prop = NULL, *prop; + struct property *new_prop = NULL; + const struct property *prop; int ret = 0; if (target->in_livetree) diff --git a/drivers/of/property.c b/drivers/of/property.c index 11b922fde7af..33dd72cad4ab 100644 --- a/drivers/of/property.c +++ b/drivers/of/property.c @@ -68,7 +68,7 @@ EXPORT_SYMBOL(of_graph_is_present); int of_property_count_elems_of_size(const struct device_node *np, const char *propname, int elem_size) { - struct property *prop = of_find_property(np, propname, NULL); + const struct property *prop = of_find_property(np, propname, NULL); if (!prop) return -EINVAL; @@ -104,7 +104,7 @@ EXPORT_SYMBOL_GPL(of_property_count_elems_of_size); static void *of_find_property_value_of_size(const struct device_node *np, const char *propname, u32 min, u32 max, size_t *len) { - struct property *prop = of_find_property(np, propname, NULL); + const struct property *prop = of_find_property(np, propname, NULL); if (!prop) return ERR_PTR(-EINVAL); @@ -530,7 +530,7 @@ int of_property_read_string_helper(const struct device_node *np, } EXPORT_SYMBOL_GPL(of_property_read_string_helper); -const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, +const __be32 *of_prop_next_u32(const struct property *prop, const __be32 *cur, u32 *pu) { const void *curv = cur; @@ -553,7 +553,7 @@ const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, } EXPORT_SYMBOL_GPL(of_prop_next_u32); -const char *of_prop_next_string(struct property *prop, const char *cur) +const char *of_prop_next_string(const struct property *prop, const char *cur) { const void *curv = cur; @@ -1466,7 +1466,7 @@ static int of_fwnode_irq_get(const struct fwnode_handle *fwnode, static int of_fwnode_add_links(struct fwnode_handle *fwnode) { - struct property *p; + const struct property *p; struct device_node *con_np = to_of_node(fwnode); if (IS_ENABLED(CONFIG_X86)) diff --git a/drivers/of/resolver.c b/drivers/of/resolver.c index ee7769525bb2..779db058c42f 100644 --- a/drivers/of/resolver.c +++ b/drivers/of/resolver.c @@ -42,7 +42,7 @@ static void adjust_overlay_phandles(struct device_node *overlay, int phandle_delta) { struct device_node *child; - struct property *prop; + const struct property *prop; phandle phandle; /* adjust node's phandle in node */ @@ -71,10 +71,10 @@ static void adjust_overlay_phandles(struct device_node *overlay, } static int update_usages_of_a_phandle_reference(struct device_node *overlay, - struct property *prop_fixup, phandle phandle) + const struct property *prop_fixup, phandle phandle) { struct device_node *refnode; - struct property *prop; + const struct property *prop; char *value __free(kfree) = kmemdup(prop_fixup->value, prop_fixup->length, GFP_KERNEL); char *cur, *end, *node_path, *prop_name, *s; int offset, len; @@ -151,7 +151,7 @@ static int adjust_local_phandle_references(const struct device_node *local_fixup const struct device_node *overlay, int phandle_delta) { struct device_node *overlay_child; - struct property *prop_fix, *prop; + const struct property *prop_fix, *prop; int err, i, count; unsigned int off; diff --git a/include/linux/of.h b/include/linux/of.h index 7875b308f13c..086a60f3b8a6 100644 --- a/include/linux/of.h +++ b/include/linux/of.h @@ -435,7 +435,7 @@ extern int of_detach_node(struct device_node *); * of_property_for_each_u32(np, "propname", u) * printk("U32 value: %x\n", u); */ -const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, +const __be32 *of_prop_next_u32(const struct property *prop, const __be32 *cur, u32 *pu); /* * struct property *prop; @@ -444,7 +444,7 @@ const __be32 *of_prop_next_u32(struct property *prop, const __be32 *cur, * of_property_for_each_string(np, "propname", prop, s) * printk("String value: %s\n", s); */ -const char *of_prop_next_string(struct property *prop, const char *cur); +const char *of_prop_next_string(const struct property *prop, const char *cur); bool of_console_check(const struct device_node *dn, char *name, int index); @@ -826,13 +826,13 @@ static inline bool of_console_check(const struct device_node *dn, const char *na return false; } -static inline const __be32 *of_prop_next_u32(struct property *prop, +static inline const __be32 *of_prop_next_u32(const struct property *prop, const __be32 *cur, u32 *pu) { return NULL; } -static inline const char *of_prop_next_string(struct property *prop, +static inline const char *of_prop_next_string(const struct property *prop, const char *cur) { return NULL; @@ -899,7 +899,7 @@ static inline const void *of_device_get_match_data(const struct device *dev) #define of_node_cmp(s1, s2) strcasecmp((s1), (s2)) #endif -static inline int of_prop_val_eq(struct property *p1, struct property *p2) +static inline int of_prop_val_eq(const struct property *p1, const struct property *p2) { return p1->length == p2->length && !memcmp(p1->value, p2->value, (size_t)p1->length); @@ -1252,7 +1252,7 @@ static inline int of_property_read_string_index(const struct device_node *np, static inline bool of_property_read_bool(const struct device_node *np, const char *propname) { - struct property *prop = of_find_property(np, propname, NULL); + const struct property *prop = of_find_property(np, propname, NULL); return prop ? true : false; } @@ -1430,7 +1430,7 @@ static inline int of_property_read_s32(const struct device_node *np, err = of_phandle_iterator_next(it)) #define of_property_for_each_u32(np, propname, u) \ - for (struct {struct property *prop; const __be32 *item; } _it = \ + for (struct {const struct property *prop; const __be32 *item; } _it = \ {of_find_property(np, propname, NULL), \ of_prop_next_u32(_it.prop, NULL, &u)}; \ _it.item; \ From patchwork Thu Oct 10 16:27:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Herring X-Patchwork-Id: 1995565 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Signed-off-by: Rob Herring (Arm) Reviewed-by: Krzysztof Kozlowski --- drivers/of/dynamic.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/of/dynamic.c b/drivers/of/dynamic.c index 110104a936d9..d45a8df61380 100644 --- a/drivers/of/dynamic.c +++ b/drivers/of/dynamic.c @@ -536,7 +536,7 @@ static void __of_changeset_entry_destroy(struct of_changeset_entry *ce) kfree(ce); } -static void __of_changeset_entry_invert(struct of_changeset_entry *ce, +static void __of_changeset_entry_invert(const struct of_changeset_entry *ce, struct of_changeset_entry *rce) { memcpy(rce, ce, sizeof(*rce)); @@ -636,7 +636,7 @@ static int __of_changeset_entry_apply(struct of_changeset_entry *ce) return 0; } -static inline int __of_changeset_entry_revert(struct of_changeset_entry *ce) +static inline int __of_changeset_entry_revert(const struct of_changeset_entry *ce) { struct of_changeset_entry ce_inverted; From patchwork Thu Oct 10 16:27:19 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Herring X-Patchwork-Id: 1995557 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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Signed-off-by: Rob Herring (Arm) Reviewed-by: Krzysztof Kozlowski --- drivers/of/kobj.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/of/kobj.c b/drivers/of/kobj.c index aeb1709d4e85..cab9b169dc67 100644 --- a/drivers/of/kobj.c +++ b/drivers/of/kobj.c @@ -37,7 +37,7 @@ static ssize_t of_node_property_read(struct file *filp, struct kobject *kobj, } /* always return newly allocated name, caller must free after use */ -static const char *safe_name(struct kobject *kobj, const char *orig_name) +static const char *safe_name(const struct kobject *kobj, const char *orig_name) { const char *name = orig_name; struct kernfs_node *kn; From patchwork Thu Oct 10 16:27:20 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rob Herring X-Patchwork-Id: 1995558 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; 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a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728577686; c=relaxed/simple; bh=ZBJJ2vLKYx/lE8Ife+RCMj8q75kHD20UVqcHkUSsK/c=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=eX8NcJFEdyvPqvhNsSzq9lp7rMKFWq/bsasYyf1X6Nz7H2sHjd/k5BW5z06zB2HeqhFoBX3Z1Z1AVd7/d+Hymx/qnHwRfk5HvXtheOuBRUekvOjzxl9UJVMyjfgN+zyFpakGnZC+xF6zNpGtvAJOZezN5mG3kAiq39xW/j5IFrs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fiU38voE; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id F3FE9C4AF0C; Thu, 10 Oct 2024 16:28:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728577686; bh=ZBJJ2vLKYx/lE8Ife+RCMj8q75kHD20UVqcHkUSsK/c=; h=From:Date:Subject:References:In-Reply-To:To:Cc:From; b=fiU38voEEDKRCfDFoby3r+dlkbq1FLlFsWNGW9jV59FUDgTShf1TU+BQNwPV2fRZj L3blQ5tlo+fQYPvxBIT4DRFx9gbSnlxADmLDc2CvSZcznmm4gapXteBjM148RK5ZWD VqpDezD3vd8/g58AY6IZvdjFL22OfrxD5N+r+EEye754uOkaojumabO/XuK4l3+Y8g cpaKJjlBY5oG6JVVew6tdRg7kSQL1z+s3FQXuwHBKswaVhZTkg6hrgOwe5FFSNxdTr VfD9heffVLgluVzQMDWOkNkxfBus5v5zfq5YN4fEiwdADx4lJQJcuP03Hc8GA9fjcY +p9SDcHrEwFFA== From: "Rob Herring (Arm)" Date: Thu, 10 Oct 2024 11:27:20 -0500 Subject: [PATCH 7/7] of/address: Constify of_busses[] array and pointers Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20241010-dt-const-v1-7-87a51f558425@kernel.org> References: <20241010-dt-const-v1-0-87a51f558425@kernel.org> In-Reply-To: <20241010-dt-const-v1-0-87a51f558425@kernel.org> To: Bjorn Helgaas , Andrew Morton , Saravana Kannan Cc: linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org X-Mailer: b4 0.15-dev The of_busses array is fixed, so it and all struct of_bus pointers can be const. Signed-off-by: Rob Herring (Arm) --- drivers/of/address.c | 12 ++++++------ include/linux/of_address.h | 2 +- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/of/address.c b/drivers/of/address.c index aa1a4e381461..824bb449e007 100644 --- a/drivers/of/address.c +++ b/drivers/of/address.c @@ -340,7 +340,7 @@ static int of_bus_default_flags_match(struct device_node *np) * Array of bus specific translators */ -static struct of_bus of_busses[] = { +static const struct of_bus of_busses[] = { #ifdef CONFIG_PCI /* PCI */ { @@ -388,7 +388,7 @@ static struct of_bus of_busses[] = { }, }; -static struct of_bus *of_match_bus(struct device_node *np) +static const struct of_bus *of_match_bus(struct device_node *np) { int i; @@ -419,8 +419,8 @@ static int of_empty_ranges_quirk(const struct device_node *np) return false; } -static int of_translate_one(struct device_node *parent, struct of_bus *bus, - struct of_bus *pbus, __be32 *addr, +static int of_translate_one(const struct device_node *parent, const struct of_bus *bus, + const struct of_bus *pbus, __be32 *addr, int na, int ns, int pna, const char *rprop) { const __be32 *ranges; @@ -505,7 +505,7 @@ static u64 __of_translate_address(struct device_node *node, { struct device_node *dev __free(device_node) = of_node_get(node); struct device_node *parent __free(device_node) = get_parent(dev); - struct of_bus *bus, *pbus; + const struct of_bus *bus, *pbus; __be32 addr[OF_MAX_ADDR_CELLS]; int na, ns, pna, pns; @@ -690,7 +690,7 @@ const __be32 *__of_get_address(struct device_node *dev, int index, int bar_no, const __be32 *prop; unsigned int psize; struct device_node *parent __free(device_node) = of_get_parent(dev); - struct of_bus *bus; + const struct of_bus *bus; int onesize, i, na, ns; if (parent == NULL) diff --git a/include/linux/of_address.h b/include/linux/of_address.h index bd46dbcc6e88..9e034363788a 100644 --- a/include/linux/of_address.h +++ b/include/linux/of_address.h @@ -10,7 +10,7 @@ struct of_bus; struct of_pci_range_parser { struct device_node *node; - struct of_bus *bus; + const struct of_bus *bus; const __be32 *range; const __be32 *end; int na;