Re: [External] : Re: [bug report] staging: sm750fb: Fix polarity assignment for vertical and horizontal mode

From: ALOK TIWARI
Date: Thu Jul 31 2025 - 12:34:19 EST




On 7/31/2025 9:41 PM, Dan Carpenter wrote:
On Wed, Jul 23, 2025 at 12:24:31PM -0700, Alok Tiwari wrote:
In drivers/staging/sm750fb/sm750_hw.c,
the vertical and horizontal sync polarity assignments were incorrectly
ordered.
The assignment for modparm.vertical_sync_polarity was mistakenly using
the FB_SYNC_HOR_HIGH_ACT bit instead of FB_SYNC_VERT_HIGH_ACT,
and the horizontal polarity line was commented out or missing.

This patch corrects the logic by properly assigning:

vertical_sync_polarity -> from FB_SYNC_VERT_HIGH_ACT
horizontal_sync_polarity -> from FB_SYNC_HOR_HIGH_ACT

Please let me know your feedback.
Thanks,
Alok
---
Fixes: 81dee67e215b ("staging: sm750fb: add sm750 to staging")
Signed-off-by: Alok Tiwari <alok.a.tiwari@xxxxxxxxxx>
---

Did you find this copy and paste bug by testing or reviewing the code?
How does this bug look like to a user? Please put that in your commit
message.

This looks reasonable to me, but the patch is badly formatted.

1) It should say [PATCH] in the subject.
2) The body of the email should be the commit message.
3) the --- should only come after the Signed-off-by line.

Try applying your patch with `git am` and review the log to see what I
mean.

regards,
dan carpenter



Thanks Dan. By reviewing the code, I noticed some awkward assignment.
However, I was not sure about this code, so instead of sending a formal patch, I just removed my SB and marked it as a [bug report].
I will send formal patch with proper SB.


Thanks,
Alok