iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

viafb: try to map less memory in case of failure

Browse Source 
The current code might result in trying to remap 512MB video ram on
a 32 bit system which is quite likely to fail.
This patch tries to map less of it down to 8MB as this should still
be enough to get a reasonably well working framebuffer. This should
make viafb work for many people without requiring them to manually
allocate more space.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
This commit is contained in:
Florian Tobias Schandinat 2011-04-25 20:01:46 +00:00
parent cace71b318
commit 9d5f96f618
1 changed files with 8 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
drivers/video/via/via-core.c
View File

@ -505,7 +505,14 @@ static int __devinit via_pci_setup_mmio(struct viafb_dev *vdev)
ret = vdev->fbmem_len = viafb_get_fb_size_from_pci(vdev->chip_type);
if (ret < 0)
goto out_unmap;
vdev->fbmem = ioremap_wc(vdev->fbmem_start, vdev->fbmem_len);
/* try to map less memory on failure, 8 MB should be still enough */
for (; vdev->fbmem_len >= 8 << 20; vdev->fbmem_len /= 2) {
vdev->fbmem = ioremap_wc(vdev->fbmem_start, vdev->fbmem_len);
if (vdev->fbmem)
break;
}
if (vdev->fbmem == NULL) {
ret = -ENOMEM;
goto out_unmap;