[RFC PATCH] drm/ast: Use msleep instead of mdelay for edid read

[Nirmoy Das]

The busy-waiting in `mdelay()` can cause CPU stalls and kernel timeouts
during boot.

Signed-off-by: Nirmoy Das <nirm...@nvidia.com>

Sending this as RFC as I am familiar with the code and not sure
if this transition is safe.
---
 drivers/gpu/drm/ast/ast_dp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/ast/ast_dp.c b/drivers/gpu/drm/ast/ast_dp.c
index 19c04687b0fe1..8e650a02c5287 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);
--
2.43.0