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| author | Suman Anna <s-anna@ti.com> | 2016-04-04 17:46:18 -0500 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2016-04-05 17:53:19 +0200 |
| commit | 521f40823ebf2818045546d45aa378eba1c41717 (patch) | |
| tree | 56a748cfe20e6f049f0e9fcfc7824560faa1127e /drivers | |
| parent | 9735a22799b9214d17d3c231fe377fc852f042e9 (diff) | |
| download | linux-521f40823ebf2818045546d45aa378eba1c41717.tar.gz linux-521f40823ebf2818045546d45aa378eba1c41717.tar.bz2 linux-521f40823ebf2818045546d45aa378eba1c41717.zip | |
iommu/omap: Remove iopgtable_clear_entry_all() from driver remove
The function iopgtable_clear_entry_all() is used for clearing all
the page table entries. These entries are neither created nor
initialized during the OMAP IOMMU driver probe, and are managed
only when a client device attaches to the IOMMU. So, there is no
need to invoke this function on a driver remove.
Removing this fixes a NULL pointer dereference crash if the IOMMU
device is unbound from the driver with no client device attached
to the IOMMU device.
Signed-off-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iommu/omap-iommu.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 3dc5b65f3990..c05d48f88596 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -987,7 +987,6 @@ static int omap_iommu_remove(struct platform_device *pdev) { struct omap_iommu *obj = platform_get_drvdata(pdev); - iopgtable_clear_entry_all(obj); omap_iommu_debugfs_remove(obj); pm_runtime_disable(obj->dev); |