diff options
| author | Nirmoy Das <nirmoyd@nvidia.com> | 2025-09-17 12:43:46 -0700 |
|---|---|---|
| committer | Thomas Zimmermann <tzimmermann@suse.de> | 2025-09-19 08:46:33 +0200 |
| commit | c7c31f8dc54aa3c9b2c994b5f1ff7e740a654e97 (patch) | |
| tree | 91bb6f4c44effdee00918db27da907ebec597f0f | |
| parent | 288dac9fb6084330d968459c750c838fd06e10e6 (diff) | |
drm/ast: Use msleep instead of mdelay for edid read
The busy-waiting in `mdelay()` can cause CPU stalls and kernel timeouts
during boot.
Signed-off-by: Nirmoy Das <nirmoyd@nvidia.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Tested-by: Carol L Soto csoto@nvidia.com<mailto:csoto@nvidia.com>
Fixes: 594e9c04b586 ("drm/ast: Create the driver for ASPEED proprietory Display-Port")
Cc: KuoHsiang Chou <kuohsiang_chou@aspeedtech.com>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: dri-devel@lists.freedesktop.org
Cc: <stable@vger.kernel.org> # v5.19+
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://lore.kernel.org/r/20250917194346.2905522-1-nirmoyd@nvidia.com
| -rw-r--r-- | drivers/gpu/drm/ast/ast_dp.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/ast/ast_dp.c b/drivers/gpu/drm/ast/ast_dp.c index 19c04687b0fe..8e650a02c528 100644 --- a/drivers/gpu/drm/ast/ast_dp.c +++ b/drivers/gpu/drm/ast/ast_dp.c @@ -134,7 +134,7 @@ static int ast_astdp_read_edid_block(void *data, u8 *buf, unsigned int block, si * 3. The Delays are often longer a lot when system resume from S3/S4. */ if (j) - mdelay(j + 1); + msleep(j + 1); /* Wait for EDID offset to show up in mirror register */ vgacrd7 = ast_get_index_reg(ast, AST_IO_VGACRI, 0xd7); |