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Sat, 30 Aug 2025 10:39:21 -0700 (PDT) From: Masaharu Noguchi To: gregkh@linuxfoundation.org, linux-staging@lists.linux.dev Cc: vaibhav.sr@gmail.com, mgreer@animalcreek.com, johan@kernel.org, elder@kernel.org, greybus-dev@lists.linaro.org, florian.fainelli@broadcom.com, rjui@broadcom.com, sbranden@broadcom.com, bcm-kernel-feedback-list@broadcom.com, dave.stevenson@raspberrypi.com, laurent.pinchart@ideasonboard.com, hverkuil@kernel.org, linux-rpi-kernel@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Masaharu Noguchi Subject: [PATCH 2/2] staging: vc04_services: bcm2835-camera: avoid -Wformat-truncation Date: Sun, 31 Aug 2025 02:38:50 +0900 Message-Id: <20250830173850.323897-3-nogunix@gmail.com> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250830173850.323897-1-nogunix@gmail.com> References: <20250830173850.323897-1-nogunix@gmail.com> Precedence: bulk X-Mailing-List: linux-staging@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit - Fix -Wformat-truncation in vidioc_querycap() when composing bus_info. - Use scnprintf() for the prefix and strscpy() for the remainder. Signed-off-by: Masaharu Noguchi --- .../staging/vc04_services/bcm2835-camera/bcm2835-camera.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c index fa7ea4ca4c36..c2788659af12 100644 --- a/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c +++ b/drivers/staging/vc04_services/bcm2835-camera/bcm2835-camera.c @@ -874,13 +874,14 @@ static int vidioc_querycap(struct file *file, void *priv, struct bcm2835_mmal_dev *dev = video_drvdata(file); u32 major; u32 minor; + int n; vchiq_mmal_version(dev->instance, &major, &minor); strscpy(cap->driver, "bcm2835 mmal", sizeof(cap->driver)); snprintf((char *)cap->card, sizeof(cap->card), "mmal service %d.%d", major, minor); - - snprintf((char *)cap->bus_info, sizeof(cap->bus_info), "platform:%s", dev->v4l2_dev.name); + n = scnprintf((char *)cap->bus_info, sizeof(cap->bus_info), "platform:"); + strscpy((char *)cap->bus_info + n, dev->v4l2_dev.name, sizeof(cap->bus_info) - n); return 0; } -- 2.39.5