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drm/amd/display: fix for-loop with incorrectly sized loop counter (v2)

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A for-loop is iterating from 0 up to 1000 however the loop variable count
is a u8 and hence not large enough.  Fix this by making count an int.
Also remove the redundant initialization of count since this is never used
and add { } on the loop statement make the loop block clearer.

v2: drop useless else (Walter Harms)

Addresses-Coverity: ("Operands don't affect result")
Fixes: ed581a0ace ("drm/amd/display: wait for update when setting dpg test pattern")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Colin Ian King 2020-01-17 13:33:05 +00:00 committed by Alex Deucher
parent 2cb44fb093
commit 54f73df4ca
1 changed files with 4 additions and 4 deletions
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6
drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c
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@ -3680,7 +3680,7 @@ static void set_crtc_test_pattern(struct dc_link *link,
struct pipe_ctx *odm_pipe; struct pipe_ctx *odm_pipe;
enum controller_dp_color_space controller_color_space; enum controller_dp_color_space controller_color_space;
int opp_cnt = 1; int opp_cnt = 1;
uint8_t count = 0; int count;
switch (test_pattern_color_space) { switch (test_pattern_color_space) {
case DP_TEST_PATTERN_COLOR_SPACE_RGB: case DP_TEST_PATTERN_COLOR_SPACE_RGB:
@ -3725,13 +3725,13 @@ static void set_crtc_test_pattern(struct dc_link *link,
width, width,
height); height);
/* wait for dpg to blank pixel data with test pattern */ /* wait for dpg to blank pixel data with test pattern */
for (count = 0; count < 1000; count++) for (count = 0; count < 1000; count++) {
if (opp->funcs->dpg_is_blanked(opp)) if (opp->funcs->dpg_is_blanked(opp))
break; break;
else
udelay(100); udelay(100);
} }
} }
}
break; break;
case DP_TEST_PATTERN_VIDEO_MODE: case DP_TEST_PATTERN_VIDEO_MODE:
{ {