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[v2,3/3] media: dvbdev: Initialize sbuf

Message ID 20240325-gcc-arm-warnings-v2-3-47523cf5c8ca@chromium.org
State New
Headers show
Series media: Fix gcc warnings | expand

Commit Message

Ricardo Ribalda March 25, 2024, 2:19 p.m. UTC 
Because the size passed to copy_from_user() cannot be known beforehand,
it needs to be checked during runtime with check_object_size. That makes
gcc believe that the content of sbuf can be used before init.

Fix:
./include/linux/thread_info.h:215:17: warning: ‘sbuf’ may be used uninitialized [-Wmaybe-uninitialized]

Signed-off-by: Ricardo Ribalda <ribalda@chromium.org>
---
 drivers/media/dvb-core/dvbdev.c             | 2 +-
 drivers/staging/media/tegra-video/tegra20.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/dvb-core/dvbdev.c b/drivers/media/dvb-core/dvbdev.c
index 733d0bc4b4cc3..b43695bc51e75 100644
--- a/drivers/media/dvb-core/dvbdev.c
+++ b/drivers/media/dvb-core/dvbdev.c
@@ -956,7 +956,7 @@  int dvb_usercopy(struct file *file,
 		 int (*func)(struct file *file,
 			     unsigned int cmd, void *arg))
 {
-	char    sbuf[128];
+	char    sbuf[128] = {};
 	void    *mbuf = NULL;
 	void    *parg = NULL;
 	int     err  = -EINVAL;
diff --git a/drivers/staging/media/tegra-video/tegra20.c b/drivers/staging/media/tegra-video/tegra20.c
index c39b52d0e4447..630e2ff987a37 100644
--- a/drivers/staging/media/tegra-video/tegra20.c
+++ b/drivers/staging/media/tegra-video/tegra20.c
@@ -164,6 +164,7 @@  static void tegra20_vi_get_input_formats(struct tegra_vi_channel *chan,
 	unsigned int input_mbus_code = chan->fmtinfo->code;
 
 	(*main_input_format) = VI_INPUT_INPUT_FORMAT_YUV422;
+	(*yuv_input_format) = VI_INPUT_YUV_INPUT_FORMAT_UYVY;
 
 	switch (input_mbus_code) {
 	case MEDIA_BUS_FMT_UYVY8_2X8:
@@ -176,7 +177,6 @@  static void tegra20_vi_get_input_formats(struct tegra_vi_channel *chan,
 		(*yuv_input_format) = VI_INPUT_YUV_INPUT_FORMAT_YUYV;
 		break;
 	case MEDIA_BUS_FMT_YVYU8_2X8:
-	default:
 		(*yuv_input_format) = VI_INPUT_YUV_INPUT_FORMAT_YVYU;
 		break;
 	}