devmem, x86: PAT Change /dev/mem mmap with O_SYNC to use UC_MINUS

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All kernel mappings like ioremap(), etc uses UC_MINUS as the type. /dev/mem
mappings with /dev/mem being opened with O_SYNC however was using UC,
resulting in a conflict with /dev/mem mmap failing. This seems to be
affecting some apps (one being flashrom) which are using O_SYNC and which were
working before.

Switch /dev/mem with O_SYNC also to UC_MINUS.

Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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venkatesh.pallipadi@intel.com 2008-08-20 16:45:52 -07:00 • committed by Ingo Molnar

parent c15238df3b

commit 28df82ebab

1 changed files with 5 additions and 12 deletions

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arch/x86/mm/pat.c

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