diff options
| author | Yijing Wang <wangyijing@huawei.com> | 2014-09-17 13:32:19 +0400 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2014-09-25 21:11:47 +0400 |
| commit | 5fc24d8cb9d43e0db335137051092da03a6845dc (patch) | |
| tree | c476b207814a1409d74fffe7b0837ef372dc7f9a /drivers/iommu/irq_remapping.c | |
| parent | fb3e306515ba6a012364b698b8ca71c337424ed3 (diff) | |
| download | linux-5fc24d8cb9d43e0db335137051092da03a6845dc.tar.xz | |
iommu/irq_remapping: Fix the regression of hpet irq remapping
Commit 71054d8841b4 ("x86, hpet: Introduce x86_msi_ops.setup_hpet_msi")
introduced x86_msi_ops.setup_hpet_msi to setup hpet MSI irq
when irq remapping enabled. This caused a regression of
hpet MSI irq remapping.
Original code flow before commit 71054d8841b4:
hpet_setup_msi_irq()
arch_setup_hpet_msi()
setup_hpet_msi_remapped()
remap_ops->setup_hpet_msi()
alloc_irte()
msi_compose_msg()
hpet_msi_write()
...
Current code flow after commit 71054d8841b4:
hpet_setup_msi_irq()
x86_msi.setup_hpet_msi()
setup_hpet_msi_remapped()
intel_setup_hpet_msi()
alloc_irte()
Currently, we only call alloc_irte() for hpet MSI, but
do not composed and wrote its msg...
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/irq_remapping.c')
| -rw-r--r-- | drivers/iommu/irq_remapping.c | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c index 33c439524080..74a1767c89b5 100644 --- a/drivers/iommu/irq_remapping.c +++ b/drivers/iommu/irq_remapping.c @@ -12,6 +12,7 @@ #include <asm/processor.h> #include <asm/x86_init.h> #include <asm/apic.h> +#include <asm/hpet.h> #include "irq_remapping.h" @@ -345,10 +346,16 @@ static int msi_setup_remapped_irq(struct pci_dev *pdev, unsigned int irq, int setup_hpet_msi_remapped(unsigned int irq, unsigned int id) { - if (!remap_ops || !remap_ops->setup_hpet_msi) + int ret; + + if (!remap_ops || !remap_ops->alloc_hpet_msi) return -ENODEV; - return remap_ops->setup_hpet_msi(irq, id); + ret = remap_ops->alloc_hpet_msi(irq, id); + if (ret) + return -EINVAL; + + return default_setup_hpet_msi(irq, id); } void panic_if_irq_remap(const char *msg) |