diff options
| author | Mitchel Humpherys <mitchelh@codeaurora.org> | 2015-11-09 11:50:58 -0800 |
|---|---|---|
| committer | David Keitel <dkeitel@codeaurora.org> | 2016-03-22 11:14:32 -0700 |
| commit | fa8f99c506b31cd32cd9da8627bd1b3b1e813351 (patch) | |
| tree | 26f22d0e455e8fbc70a307361073bc238742c88f | |
| parent | 8ed2896540c4389a9e9b4f528e30d34c4f35b0ca (diff) | |
iommu/arm-smmu: Reduce TLB sync timeout
We're currently waiting for up to 1 second for the TLB sync command to
finish. Unfortunately, this is long enough to trigger a watchdog bark
since the time between the watchdog pet timer interrupt and the bark
interrupt is only 1 second. Fix this by reducing the timeout to 500
milliseconds, which is still more than enough time for the TLB sync
command to complete.
CRs-Fixed: 929880
Change-Id: I467cd5fd9caa24b4f120a7fe8c8f57c73687006b
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
| -rw-r--r-- | drivers/iommu/arm-smmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/arm-smmu.c b/drivers/iommu/arm-smmu.c index e2fdd7b93600..b989b025e0a5 100644 --- a/drivers/iommu/arm-smmu.c +++ b/drivers/iommu/arm-smmu.c @@ -142,7 +142,7 @@ #define ARM_SMMU_GR0_sTLBGSYNC 0x70 #define ARM_SMMU_GR0_sTLBGSTATUS 0x74 #define sTLBGSTATUS_GSACTIVE (1 << 0) -#define TLB_LOOP_TIMEOUT 1000000 /* 1s! */ +#define TLB_LOOP_TIMEOUT 500000 /* 500ms */ /* Stream mapping registers */ #define ARM_SMMU_GR0_SMR(n) (0x800 + ((n) << 2)) |