diff options
Diffstat (limited to 'drivers/video/fbmem.c')
| -rw-r--r-- | drivers/video/fbmem.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c index 7cfcd716fd5f..e08b7b5cb326 100644 --- a/drivers/video/fbmem.c +++ b/drivers/video/fbmem.c @@ -1500,19 +1500,26 @@ static bool fb_do_apertures_overlap(struct apertures_struct *gena, return false; } -void remove_conflicting_framebuffers(struct apertures_struct *a, const char *name) +#define VGA_FB_PHYS 0xA0000 +void remove_conflicting_framebuffers(struct apertures_struct *a, + const char *name, bool primary) { int i; /* check all firmware fbs and kick off if the base addr overlaps */ for (i = 0 ; i < FB_MAX; i++) { + struct apertures_struct *gen_aper; if (!registered_fb[i]) continue; if (!(registered_fb[i]->flags & FBINFO_MISC_FIRMWARE)) continue; - if (fb_do_apertures_overlap(registered_fb[i]->apertures, a)) { + gen_aper = registered_fb[i]->apertures; + if (fb_do_apertures_overlap(gen_aper, a) || + (primary && gen_aper && gen_aper->count && + gen_aper->ranges[0].base == VGA_FB_PHYS)) { + printk(KERN_ERR "fb: conflicting fb hw usage " "%s vs %s - removing generic driver\n", name, registered_fb[i]->fix.id); @@ -1545,7 +1552,8 @@ register_framebuffer(struct fb_info *fb_info) if (fb_check_foreignness(fb_info)) return -ENOSYS; - remove_conflicting_framebuffers(fb_info->apertures, fb_info->fix.id); + remove_conflicting_framebuffers(fb_info->apertures, fb_info->fix.id, + fb_is_primary_device(fb_info)); num_registered_fb++; for (i = 0 ; i < FB_MAX; i++) |