The patch titled viafb: fix ioremap_nocache error handling has been added to the -mm tree. Its filename is viafb-fix-ioremap_nocache-error-handling.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: viafb: fix ioremap_nocache error handling From: Florian Tobias Schandinat <FlorianSchandinat@xxxxxx> 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@xxxxxx> Cc: Scott Fang <ScottFang@xxxxxxxxxxxxxx> Cc: Joseph Chan <JosephChan@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/video/via/viafbdev.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff -puN drivers/video/via/viafbdev.c~viafb-fix-ioremap_nocache-error-handling drivers/video/via/viafbdev.c --- a/drivers/video/via/viafbdev.c~viafb-fix-ioremap_nocache-error-handling +++ a/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; _ Patches currently in -mm which might be from FlorianSchandinat@xxxxxx are viafb-remove-duplicated-cx700-register-init.patch viafb-remove-temporary-start-address-setting.patch viafb-merge-viafb_update_viafb_par-in-viafb_update_fix.patch viafb-split-viafb_set_start_addr-up.patch viafb-fix-ioremap_nocache-error-handling.patch fb-fix-fb_pan_display-range-check.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html