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| author | Jocelyn Falempe <jfalempe@redhat.com> | 2022-05-04 15:40:26 +0200 |
|---|---|---|
| committer | Jocelyn Falempe <jfalempe@redhat.com> | 2022-05-12 15:15:24 +0200 |
| commit | d2addf89c5abf4024574d42000313175c6e074fc (patch) | |
| tree | f78787532f1af0b9b0c70b19a977e93aa0300867 /drivers | |
| parent | drm/mgag200: Optimize damage clips (diff) | |
| download | linux-d2addf89c5abf4024574d42000313175c6e074fc.tar.xz linux-d2addf89c5abf4024574d42000313175c6e074fc.zip | |
drm/mgag200: Warn once if trying to set start address on broken hardware.
Some MGA200 hardware is broken and can't use a start address > 0.
v2: Warn if startaddr is not 0, and hw doesn't support it.
(instead of removing MGAG200_FLAG_HW_BUG_NO_STARTADD)
Signed-off-by: Jocelyn Falempe <jfalempe@redhat.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504134026.283417-4-jfalempe@redhat.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_mode.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 294a53b95c61..dec744d0bee2 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -223,6 +223,9 @@ static void mgag200_set_startadd(struct mga_device *mdev, startadd = offset / 8; + if (startadd > 0) + drm_WARN_ON_ONCE(dev, mdev->flags & MGAG200_FLAG_HW_BUG_NO_STARTADD); + /* * Can't store addresses any higher than that, but we also * don't have more than 16 MiB of memory, so it should be fine. |