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ia64: Fix kernel BUG at lib/ioremap.c:72! 

Commit 0bbf47eab4 ("ia64: use asm-generic/io.h") results in a BUG
while booting ia64.  This is because asm-generic/io.h defines
PCI_IOBASE, which results in the function acpi_pci_root_remap_iospace()
doing a lot of unnecessary (and wrong) things.

I'd suggested an #if !CONFIG_IA64 in the functon, but Arnd suggested
keeping the fix inside the arch/ia64 tree.

Fixes: 0bbf47eab4 ("ia64: use asm-generic/io.h")
Suggested-by: Arnd Bergman <arnd@arndb.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Tony Luck 2018-08-20 09:31:04 -07:00 committed by Linus Torvalds
parent 8fdd36d442
commit cc26ebbebd
1 changed files with 1 additions and 0 deletions
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arch/ia64/include/asm/io.h
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@ -454,6 +454,7 @@ extern void memset_io(volatile void __iomem *s, int c, long n);
#define xlate_dev_kmem_ptr xlate_dev_kmem_ptr
#define xlate_dev_mem_ptr xlate_dev_mem_ptr
#include <asm-generic/io.h>
#undef PCI_IOBASE
# endif /* __KERNEL__ */