diff options
| -rw-r--r-- | drivers/video/fbdev/aty/atyfb_base.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/drivers/video/fbdev/aty/atyfb_base.c b/drivers/video/fbdev/aty/atyfb_base.c index 16936bb..de8f7e0 100644 --- a/drivers/video/fbdev/aty/atyfb_base.c +++ b/drivers/video/fbdev/aty/atyfb_base.c @@ -3489,7 +3489,21 @@ static int atyfb_setup_generic(struct pci_dev *pdev, struct fb_info *info, /* Map in frame buffer */ info->fix.smem_start = addr; - info->screen_base = ioremap(addr, 0x800000); + + /* + * The framebuffer is not always 8 MiB, that's just the size of the + * PCI BAR. We temporarily abuse smem_len here to store the size + * of the BAR. aty_init() will later correct it to match the actual + * framebuffer size. + * + * On devices that don't have the auxiliary register aperture, the + * registers are housed at the top end of the framebuffer PCI BAR. + * aty_fudge_framebuffer_len() is used to reduce smem_len to not + * overlap with the registers. + */ + info->fix.smem_len = 0x800000; + + info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len); if (info->screen_base == NULL) { ret = -ENOMEM; goto atyfb_setup_generic_fail; |