diff options
| author | Florian Tobias Schandinat <FlorianSchandinat@gmx.de> | 2009-09-22 16:47:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-23 07:39:51 -0700 |
| commit | bc6932bb4a25ced97c4f201874573e6097237b78 (patch) | |
| tree | f7bc89b68a935d1951c086aa692fd62319b420b8 | |
| parent | 09cf11806e4b4be92af76253ff9834c48b416129 (diff) | |
viafb: fix ioremap_nocache error handling
Correct the returned error code for remapping the video framebuffer.
Introduce error handling for remapping MMIO register address space to
avoid a NULL pointer dereference. Disable hardware acceleration if
remapping MMIO register address space failed as those registers are only
used for hardware acceleration.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Scott Fang <ScottFang@viatech.com.cn>
Cc: Joseph Chan <JosephChan@via.com.tw>
Cc: Harald Welte <laforge@gnumonks.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | drivers/video/via/viafbdev.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/video/via/viafbdev.c b/drivers/video/via/viafbdev.c index 743eed48a5f..72759b620e7 100644 --- a/drivers/video/via/viafbdev.c +++ b/drivers/video/via/viafbdev.c @@ -2134,12 +2134,16 @@ static int __devinit via_pci_probe(void) if (!viaparinfo->fbmem_virt) { printk(KERN_INFO "ioremap failed\n"); - return -1; + return -ENOMEM; } viafb_get_mmio_info(&viaparinfo->mmio_base, &viaparinfo->mmio_len); viaparinfo->io_virt = ioremap_nocache(viaparinfo->mmio_base, viaparinfo->mmio_len); + if (!viaparinfo->io_virt) { + printk(KERN_WARNING "ioremap failed: hardware acceleration disabled\n"); + viafb_accel = 0; + } viafbinfo->node = 0; viafbinfo->fbops = &viafb_ops; |