Message ID | 20241205-const_dfc_done-v3-0-1611f1486b5a@quicinc.com |
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b=nUjm31s+le2By14e1uvhDXRZcL6JvDqlAm6faRZrYR3lf5tGz2pO9OJANi3o6oJIX jDvhVuqB5hl+UMN45ytU5zEd4K74EEp95CEOuasDG6/Q/rDhT9HWfjwHQlTk7gg9Kf 1H0CpvZD/JK+jpNhp8RCjf0r5Zeqds8scLrXtRFar6mRxbUhmYk/zjuhu4EKn4CLJu ai1YelWUhUJ5MEyq0XkuGV4aouHgDFtqzkZtjYS4RP5MtW+iOf1aZ3QVemHCcg9Ow6 aawF1fTnQiXcSMAlkkDsx520AKxkNmzRAzfwQZWUThz2DShzSKRLjYp96CIRKxGt+P 0tS7N48Gl948g== Received: from [192.168.1.26] (pv50p00im-dlb-asmtp-mailmevip.me.com [17.56.9.10]) by pv50p00im-tydg10011801.me.com (Postfix) with ESMTPSA id 7E4458002D7; Thu, 5 Dec 2024 00:10:52 +0000 (UTC) From: Zijun Hu <zijun_hu@icloud.com> Subject: [PATCH v3 00/11] driver core: Constify API device_find_child() Date: Thu, 05 Dec 2024 08:10:09 +0800 Message-Id: <20241205-const_dfc_done-v3-0-1611f1486b5a@quicinc.com> Precedence: bulk X-Mailing-List: sparclinux@vger.kernel.org List-Id: <sparclinux.vger.kernel.org> List-Subscribe: <mailto:sparclinux+subscribe@vger.kernel.org> List-Unsubscribe: <mailto:sparclinux+unsubscribe@vger.kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAGHvUGcC/2XMQQ6CMBCF4auQWVvTUozgynsYQsp0kFnYYotEQ 3p3a7cu/5e8b4dIgSnCpdoh0MaRvcuhDxXgbNydBNvcUMu6UbVUAr2L62AnHKx3JIwhPCvS40g G8mkJNPG7gLc+98xx9eFT/E391kLJVv1RmxJSdLY9kZ66RuN4fb4Y2eER/QP6lNIXY8kkKK4AA AA= X-Change-ID: 20241201-const_dfc_done-aaec71e3bbea To: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= <ukleinek@kernel.org>, James Bottomley <James.Bottomley@HansenPartnership.com>, =?utf-8?q?Thomas_?= =?utf-8?q?Wei=C3=9Fschuh?= <thomas@t-8ch.de>, Zijun Hu <zijun_hu@icloud.com>, linux-kernel@vger.kernel.org, nvdimm@lists.linux.dev, linux-sound@vger.kernel.org, sparclinux@vger.kernel.org, linux-block@vger.kernel.org, linux-cxl@vger.kernel.org, linux1394-devel@lists.sourceforge.net, arm-scmi@vger.kernel.org, linux-efi@vger.kernel.org, linux-gpio@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, linux-hwmon@vger.kernel.org, linux-media@vger.kernel.org, linux-pwm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-scsi@vger.kernel.org, open-iscsi@googlegroups.com, linux-usb@vger.kernel.org, linux-serial@vger.kernel.org, netdev@vger.kernel.org, Zijun Hu <quic_zijuhu@quicinc.com> X-Mailer: b4 0.14.2 X-Proofpoint-ORIG-GUID: SZpoGZHNuD90VNBiGwICh7r4ZYK4OmYI X-Proofpoint-GUID: SZpoGZHNuD90VNBiGwICh7r4ZYK4OmYI X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2024-12-04_19,2024-12-04_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 adultscore=0 malwarescore=0 clxscore=1015 phishscore=0 suspectscore=0 bulkscore=0 mlxscore=0 spamscore=0 mlxlogscore=899 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2308100000 definitions=main-2412040186 X-Apple-Remote-Links: v=1;h=KCk=;charset=UTF-8 X-Spam-Status: No, score=-3.4 required=5.0 tests=ARC_SIGNED,ARC_VALID, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DMARC_PASS, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,SPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.0 X-Spam-Checker-Version: SpamAssassin 4.0.0 (2022-12-13) on gandalf.ozlabs.org |
Series |
driver core: Constify API device_find_child()
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On 2024/12/5 08:10, Zijun Hu wrote: > This patch series is to constify the following API: This patch series is based on the lasted mainline commit Commit: feffde684ac2 ("Merge tag 'for-6.13-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux") to avoid potential conflict as much as possible. > struct device *device_find_child(struct device *dev, void *data, > int (*match)(struct device *dev, void *data)); > To : > struct device *device_find_child(struct device *dev, const void *data, > device_match_t match); > typedef int (*device_match_t)(struct device *dev, const void *data); > > Why to constify the API? > > - Protect caller's match data @*data which is for comparison and lookup > and the API does not actually need to modify @*data. > > - Make the API's parameters (@match)() and @data have the same type as > all of other device finding APIs (bus|class|driver)_find_device(). > > - All kinds of existing device matching functions can be directly taken > as the API's argument, they were exported by driver core. > > What to do? > > - Patches [1/11, 3/11] prepare for constifying the API. > > - Patch 4/11 constifies the API and adapt for its various subsystem usages. > > - Remaining do cleanup for several usages with benefits brought above.