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iommu/amd: fix type bug in flush code

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write_file_bool() modifies 32 bits of data, so "amd_iommu_unmap_flush"
needs to be 32 bits as well or we'll corrupt memory.  Fortunately it
looks like the data is aligned with a gap after the declaration so this
is harmless in production.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
This commit is contained in:
Dan Carpenter 2012-06-27 12:09:18 +03:00 committed by Joerg Roedel
parent 68ee6d2237
commit 3775d4818d
3 changed files with 3 additions and 3 deletions
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2
drivers/iommu/amd_iommu.c
View file

@ -404,7 +404,7 @@ static void amd_iommu_stats_init(void)
return;
de_fflush = debugfs_create_bool("fullflush", 0444, stats_dir,
(u32 *)&amd_iommu_unmap_flush);
&amd_iommu_unmap_flush);
amd_iommu_stats_add(&compl_wait);
amd_iommu_stats_add(&cnt_map_single);

2
drivers/iommu/amd_iommu_init.c
View file

@ -129,7 +129,7 @@ u16 amd_iommu_last_bdf; /* largest PCI device id we have
to handle */
LIST_HEAD(amd_iommu_unity_map); /* a list of required unity mappings
we find in ACPI */
bool amd_iommu_unmap_flush; /* if true, flush on every unmap */
u32 amd_iommu_unmap_flush; /* if true, flush on every unmap */
LIST_HEAD(amd_iommu_list); /* list of all AMD IOMMUs in the
system */

2
drivers/iommu/amd_iommu_types.h
View file

@ -652,7 +652,7 @@ extern unsigned long *amd_iommu_pd_alloc_bitmap;
* If true, the addresses will be flushed on unmap time, not when
* they are reused
*/
extern bool amd_iommu_unmap_flush;
extern u32 amd_iommu_unmap_flush;
/* Smallest number of PASIDs supported by any IOMMU in the system */
extern u32 amd_iommu_max_pasids;