diff options
| author | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-26 14:45:41 (GMT) |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2009-11-27 13:20:37 (GMT) |
| commit | 8eed9833346781dd15e3bef35a91b0a40787ea3c (patch) | |
| tree | 17e0fb9bc006517cad5949fb9d5d9ecd436cf485 /arch/x86/kernel | |
| parent | b00d3bcff4d996f65e337d404b0df5dc201a01ab (diff) | |
| download | linux-8eed9833346781dd15e3bef35a91b0a40787ea3c.tar.xz | |
x86/amd-iommu: Move reset_iommu_command_buffer out of locked code
This patch removes the ugly contruct where the
iommu->lock must be released while before calling the
reset_iommu_command_buffer function.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/amd_iommu.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index 0eafca5..b75fcd9 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c @@ -285,6 +285,7 @@ static void iommu_print_event(struct amd_iommu *iommu, void *__evt) break; case EVENT_TYPE_ILL_CMD: printk("ILLEGAL_COMMAND_ERROR address=0x%016llx]\n", address); + iommu->reset_in_progress = true; reset_iommu_command_buffer(iommu); dump_command(address); break; @@ -407,11 +408,8 @@ static void __iommu_wait_for_completion(struct amd_iommu *iommu) status &= ~MMIO_STATUS_COM_WAIT_INT_MASK; writel(status, iommu->mmio_base + MMIO_STATUS_OFFSET); - if (unlikely(i == EXIT_LOOP_COUNT)) { - spin_unlock(&iommu->lock); - reset_iommu_command_buffer(iommu); - spin_lock(&iommu->lock); - } + if (unlikely(i == EXIT_LOOP_COUNT)) + iommu->reset_in_progress = true; } /* @@ -458,6 +456,9 @@ static int iommu_completion_wait(struct amd_iommu *iommu) out: spin_unlock_irqrestore(&iommu->lock, flags); + if (iommu->reset_in_progress) + reset_iommu_command_buffer(iommu); + return 0; } @@ -649,8 +650,6 @@ static void reset_iommu_command_buffer(struct amd_iommu *iommu) if (iommu->reset_in_progress) panic("AMD-Vi: ILLEGAL_COMMAND_ERROR while resetting command buffer\n"); - iommu->reset_in_progress = true; - amd_iommu_reset_cmd_buffer(iommu); amd_iommu_flush_all_devices(); amd_iommu_flush_all_domains(); |