tree: git://people.freedesktop.org/~agd5f/linux.git drm-next-4.19-wip
head: d9d75cfdd854593351f7537b2c0f57aaaa39304e
commit: 2b6199a1d1b70fccd62aed961ba4c2b979ae499c [10/60] drm/amd/display: replace msleep with udelay in fbc path
smatch warnings:
drivers/gpu/drm/amd/amdgpu/../display/dc/dce110/dce110_compressor.c:150 wait_for_fbc_state_changed() warn: always true condition '(counter < 1000) => (0-255 < 1000)'
drivers/gpu/drm/amd/amdgpu/../display/dc/dce110/dce110_compressor.c:150 wait_for_fbc_state_changed() warn: always true condition '(counter < 1000) => (0-255 < 1000)'
vim +150 drivers/gpu/drm/amd/amdgpu/../display/dc/dce110/dce110_compressor.c
141
142 static void wait_for_fbc_state_changed(
143 struct dce110_compressor *cp110,
144 bool enabled)
145 {
146 uint8_t counter = 0;
147 uint32_t addr = mmFBC_STATUS;
148 uint32_t value;
149
> 150 while (counter < 1000) {
151 value = dm_read_reg(cp110->base.ctx, addr);
152 if (get_reg_field_value(
153 value,
154 FBC_STATUS,
155 FBC_ENABLE_STATUS) == enabled)
156 break;
157 udelay(100);
158 counter++;
159 }
160
161 if (counter == 10) {
162 DC_LOG_WARNING("%s: wait counter exceeded, changes to HW not applied",
163 __func__);
164 } else {
165 DC_LOG_SYNC("FBC status changed to %d", enabled);
166 }
167
168
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0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/kbuild-all Intel Corporation
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