From 77ac166fba909d520b9a21dcc28cb49081e31033 Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 10 Nov 2005 11:12:11 +1100 Subject: [PATCH] [PATCH] ppc64: Don't panic when early __ioremap fails Early calls to __ioremap() will panic if the hash insertion fails. This patch makes them return NULL instead. It happens with some pSeries users who enabled CONFIG_BOOTX_TEXT. The later is getting an incorrect address for the fame buffer and the hash insertion fails. With this patch, it will display an error instead of crashing at boot. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/powerpc/mm/pgtable_64.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index 900842451bd..c7f7bb6f30b 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -122,8 +122,11 @@ static int map_io_page(unsigned long ea, unsigned long pa, int flags) * */ if (htab_bolt_mapping(ea, ea + PAGE_SIZE, pa, flags, - mmu_virtual_psize)) - panic("Can't map bolted IO mapping"); + mmu_virtual_psize)) { + printk(KERN_ERR "Failed to do bolted mapping IO " + "memory at %016lx !\n", pa); + return -ENOMEM; + } } return 0; } -- 2.20.1