6.12-stable review patch. If anyone has any objections, please let me know.
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From: Nirmoy Das nirmoyd@nvidia.com
commit c7c31f8dc54aa3c9b2c994b5f1ff7e740a654e97 upstream.
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.commailto: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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/ast/ast_dp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/gpu/drm/ast/ast_dp.c +++ b/drivers/gpu/drm/ast/ast_dp.c @@ -79,7 +79,7 @@ static int ast_astdp_read_edid_block(voi * 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);