drivers/staging/media/tegra-video/tegra20.c: In function ‘tegra20_vip_start_streaming’: drivers/staging/media/tegra-video/tegra20.c:624:72: warning: ‘yuv_input_format’ may be used uninitialized [-Wmaybe-uninitialized] 624 | VI_INPUT_VIP_INPUT_ENABLE | main_input_format | yuv_input_format); drivers/staging/media/tegra-video/tegra20.c:617:22: note: ‘yuv_input_format’ was declared here 617 | unsigned int yuv_input_format; | ^~~~~~~~~~~~~~~~ drivers/media/radio/radio-shark2.c: In function ‘usb_shark_probe’: drivers/media/radio/radio-shark2.c:191:17: warning: ‘%s’ directive output may be truncated writing up to 35 bytes into a region of size 32 [-Wformat-truncation=] 191 | .name = "%s:blue:", | ^ In function ‘shark_register_leds’, inlined from ‘usb_shark_probe’ at drivers/media/radio/radio-shark2.c:306:11: drivers/media/radio/radio-shark2.c:212:17: note: ‘snprintf’ output between 7 and 42 bytes into a destination of size 32 212 | snprintf(shark->led_names[i], sizeof(shark->led_names[0]), | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 213 | shark->leds[i].name, shark->v4l2_dev.name); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ drivers/media/radio/radio-shark2.c: In function ‘usb_shark_probe’: drivers/media/radio/radio-shark2.c:197:17: warning: ‘%s’ directive output may be truncated writing up to 35 bytes into a region of size 32 [-Wformat-truncation=] 197 | .name = "%s:red:", | ^ In function ‘shark_register_leds’, inlined from ‘usb_shark_probe’ at drivers/media/radio/radio-shark2.c:306:11: drivers/media/radio/radio-shark2.c:212:17: note: ‘snprintf’ output between 6 and 41 bytes into a destination of size 32 212 | snprintf(shark->led_names[i], sizeof(shark->led_names[0]), | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 213 | shark->leds[i].name, shark->v4l2_dev.name); | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ AR drivers/staging/media/tegra-video/built-in.a AR drivers/staging/media/built-in.a In file included from ./include/asm-generic/preempt.h:5, from ./arch/arm/include/generated/asm/preempt.h:1, from ./include/linux/preempt.h:79, from ./include/linux/spinlock.h:56, from ./include/linux/mmzone.h:8, from ./include/linux/gfp.h:7, from ./include/linux/umh.h:4, from ./include/linux/kmod.h:9, from ./include/linux/module.h:17, from drivers/media/dvb-core/dvbdev.c:15: In function ‘check_object_size’, inlined from ‘check_copy_size’ at ./include/linux/thread_info.h:251:2, inlined from ‘copy_from_user’ at ./include/linux/uaccess.h:182:6, inlined from ‘dvb_usercopy’ at drivers/media/dvb-core/dvbdev.c:987:7: ./include/linux/thread_info.h:215:17: warning: ‘sbuf’ may be used uninitialized [-Wmaybe-uninitialized] 215 | __check_object_size(ptr, n, to_user); | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/thread_info.h: In function ‘dvb_usercopy’: ./include/linux/thread_info.h:208:13: note: by argument 1 of type ‘const void *’ to ‘__check_object_size’ declared here 208 | extern void __check_object_size(const void *ptr, unsigned long n, | ^~~~~~~~~~~~~~~~~~~ drivers/media/dvb-core/dvbdev.c:959:17: note: ‘sbuf’ declared here 959 | char sbuf[128]; | ^~~~ AR drivers/media/radio/built-in.a Signed-off-by: Ricardo Ribalda <ribalda@xxxxxxxxxxxx> --- Ricardo Ribalda (3): staging: media: tegra-video: Fix -Wmaybe-unitialized warn in gcc media: radio-shark2: Avoid led_names truncations media: dvbdev: Initialize sbuf drivers/media/dvb-core/dvbdev.c | 2 +- drivers/media/radio/radio-shark2.c | 2 +- drivers/staging/media/tegra-video/tegra20.c | 1 + 3 files changed, 3 insertions(+), 2 deletions(-) --- base-commit: b14257abe7057def6127f6fb2f14f9adc8acabdb change-id: 20240323-gcc-arm-warnings-e4c142cb5ac0 Best regards, -- Ricardo Ribalda <ribalda@xxxxxxxxxxxx>