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drm/amd/display: fix type mismatch error for return variable

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It is possible for ret_vsnprintf to be assigned negative value in
error cases. As an unsigned variable, negative values which
are stored in their 2's complement form gets treated as a positive
number. This will led to treating bad cases as good ones.
eg: -1 gets stored as 0xFFFFFFFF on a 32 bit system

Signed-off-by: Dale Zhao <dale.zhao@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Anson Jacob <Anson.Jacob@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Dale Zhao 2021-01-27 20:04:52 +08:00 committed by Alex Deucher
parent 91a51fbf24
commit e75f563463
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer_debug.c
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@ -47,7 +47,7 @@
unsigned int snprintf_count(char *pBuf, unsigned int bufSize, char *fmt, ...)
{
unsigned int ret_vsnprintf;
int ret_vsnprintf;
unsigned int chars_printed;
va_list args;