On 1/2/23 14:57, Paul Menzel wrote:
Commit 62d89a7d49af ("video: fbdev: matroxfb: set maxvram of vbG200eW to the same as vbG200 to avoid black screen") accidently decreases the maximum memory size for the Matrox G200eW (102b:0532) from 8 MB to 1 MB by missing one zero. This caused the driver initialization to fail with the messages below, as the minimum required VRAM size is 2 MB:
[ 9.436420] matroxfb: Matrox MGA-G200eW (PCI) detected [ 9.444502] matroxfb: cannot determine memory size [ 9.449316] matroxfb: probe of 0000:0a:03.0 failed with error -1So, add the missing 0 to make it the intended 16 MB. Successfully tested on the Dell PowerEdge R910/0KYD3D, BIOS 2.10.0 08/29/2013, that the warning is gone.
While at it, add a leading 0 to the maxdisplayable entry, so it’s aligned properly. The value could probably also be increased from 8 MB to 16 MB, as the G200 uses the same values, but I have not checked any datasheet.
Note, matroxfb is obsolete and superseded by the maintained DRM driver mga200, which is used by default on most systems where both drivers are available. Therefore, on most systems it was only a cosmetic issue.
Fixes: 62d89a7d49af ("video: fbdev: matroxfb: set maxvram of vbG200eW to the same as vbG200 to avoid black screen") Link: https://lore.kernel.org/linux-fbdev/972999d3-b75d-5680-fcef-6e6905c52ac5@sus... Cc: it+linux-fbdev@molgen.mpg.de Cc: Z. Liu liuzx@knownsec.com Cc: Rich Felker dalias@libc.org Cc: stable@vger.kernel.org Signed-off-by: Paul Menzel pmenzel@molgen.mpg.de
applied this v1 version to the fbdev git tree. Thanks! Helge
drivers/video/fbdev/matrox/matroxfb_base.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/video/fbdev/matrox/matroxfb_base.c b/drivers/video/fbdev/matrox/matroxfb_base.c index 0d3cee7ae7268..a043a737ea9f7 100644 --- a/drivers/video/fbdev/matrox/matroxfb_base.c +++ b/drivers/video/fbdev/matrox/matroxfb_base.c @@ -1378,8 +1378,8 @@ static struct video_board vbG200 = { .lowlevel = &matrox_G100 }; static struct video_board vbG200eW = {
- .maxvram = 0x100000,
- .maxdisplayable = 0x800000,
- .maxvram = 0x1000000,
- .maxdisplayable = 0x0800000, .accelID = FB_ACCEL_MATROX_MGAG200, .lowlevel = &matrox_G100 };