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x86: Use x86_platform for iommu_shutdown

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This patch cleans up pci_iommu_shutdown() a bit to use
x86_platform (similar to how IA64 initializes an IOMMU driver).

This adds iommu_shutdown() to x86_platform to avoid calling
every IOMMUs' shutdown functions in pci_iommu_shutdown() in
order. The IOMMU shutdown functions are platform specific (we
don't have multiple different IOMMU hardware) so the current way
is pointless.

An IOMMU driver sets x86_platform.iommu_shutdown to the shutdown
function if necessary.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: joerg.roedel@amd.com
LKML-Reference: <20091027163358F.fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
FUJITA Tomonori
2009-10-27 16:34:44 +09:00
committed by Ingo Molnar
parent 7c9abfb884
commit 338bac527e
10 changed files with 13 additions and 26 deletions
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4
arch/x86/kernel/reboot.c
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@@ -23,7 +23,7 @@
# include <linux/ctype.h>
# include <linux/mc146818rtc.h>
#else
# include <asm/iommu.h>
# include <asm/x86_init.h>
#endif
/*
@@ -622,7 +622,7 @@ void native_machine_shutdown(void)
#endif
#ifdef CONFIG_X86_64
pci_iommu_shutdown();
x86_platform.iommu_shutdown();
#endif
}