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@xxxxxxxxxxxx>
---
drivers/media/dvb-core/dvbdev.c | 2 +-
drivers/staging/media/tegra-video/tegra20.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
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;
}
--
2.44.0.396.g6e790dbe36-goog
