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drm/mgag200: Warn once if trying to set start address on broken hardware.

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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
This commit is contained in:
Jocelyn Falempe
2022-05-04 15:40:26 +02:00
parent c48a363016
commit d2addf89c5
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/mgag200/mgag200_mode.c
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@@ -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.