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[2001:8b0:1d0::2]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-36878684773sm11560157f8f.7.2024.07.23.06.10.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Jul 2024 06:10:34 -0700 (PDT) From: Peter Maydell To: qemu-arm@nongnu.org, qemu-devel@nongnu.org Cc: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , qemu-stable@nongnu.org Subject: [PATCH 4/4] hw/misc/bcm2835_property: Reduce scope of variables in mbox push function Date: Tue, 23 Jul 2024 14:10:29 +0100 Message-Id: <20240723131029.1159908-5-peter.maydell@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240723131029.1159908-1-peter.maydell@linaro.org> References: <20240723131029.1159908-1-peter.maydell@linaro.org> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::42e; envelope-from=peter.maydell@linaro.org; helo=mail-wr1-x42e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org In bcm2835_property_mbox_push(), some variables are defined at function scope but used only in a smaller scope of the function: * tag, bufsize, resplen are used only in the body of the while() loop * tmp is used only for RPI_FWREQ_SET_POWER_STATE (and is badly named) Declare these variables in the scope where they're needed, so the code is easier to read. Signed-off-by: Peter Maydell Reviewed-by: Philippe Mathieu-Daudé --- hw/misc/bcm2835_property.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-) diff --git a/hw/misc/bcm2835_property.c b/hw/misc/bcm2835_property.c index 443d42a1824..8ca3128f29b 100644 --- a/hw/misc/bcm2835_property.c +++ b/hw/misc/bcm2835_property.c @@ -25,11 +25,7 @@ static void bcm2835_property_mbox_push(BCM2835PropertyState *s, uint32_t value) { - uint32_t tag; - uint32_t bufsize; uint32_t tot_len; - size_t resplen; - uint32_t tmp; /* * Copy the current state of the framebuffer config; we will update @@ -48,10 +44,10 @@ static void bcm2835_property_mbox_push(BCM2835PropertyState *s, uint32_t value) /* @(addr + 4) : Buffer response code */ value = s->addr + 8; while (value + 8 <= s->addr + tot_len) { - tag = ldl_le_phys(&s->dma_as, value); - bufsize = ldl_le_phys(&s->dma_as, value + 4); + uint32_t tag = ldl_le_phys(&s->dma_as, value); + uint32_t bufsize = ldl_le_phys(&s->dma_as, value + 4); /* @(value + 8) : Request/response indicator */ - resplen = 0; + size_t resplen = 0; switch (tag) { case RPI_FWREQ_PROPERTY_END: break; @@ -95,13 +91,16 @@ static void bcm2835_property_mbox_push(BCM2835PropertyState *s, uint32_t value) resplen = 8; break; case RPI_FWREQ_SET_POWER_STATE: - /* Assume that whatever device they asked for exists, - * and we'll just claim we set it to the desired state + { + /* + * Assume that whatever device they asked for exists, + * and we'll just claim we set it to the desired state. */ - tmp = ldl_le_phys(&s->dma_as, value + 16); - stl_le_phys(&s->dma_as, value + 16, (tmp & 1)); + uint32_t state = ldl_le_phys(&s->dma_as, value + 16); + stl_le_phys(&s->dma_as, value + 16, (state & 1)); resplen = 8; break; + } /* Clocks */