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| author | Yijing Wang <wangyijing@huawei.com> | 2014-07-08 10:09:19 +0800 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2014-07-16 14:49:02 -0600 |
| commit | e11ece5a5e4292243076290d22bf2860a541e223 (patch) | |
| tree | 9c772ae1a4d80fcac0f95740a6dca25662ab9e13 /drivers/pci/msi.c | |
| parent | 0dae508aacb465bd96f8ce84d35b4b861894e302 (diff) | |
| download | blackbird-op-linux-e11ece5a5e4292243076290d22bf2860a541e223.tar.gz blackbird-op-linux-e11ece5a5e4292243076290d22bf2860a541e223.zip | |
PCI/MSI: Use irq_get_msi_desc() to simplify code
Use irq_get_msi_desc() to get MSI IRQ related msi_desc directly instead of
searching the dev->msi_list.
Signed-off-by: Yijing Wang <wangyijing@huawei.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Diffstat (limited to 'drivers/pci/msi.c')
| -rw-r--r-- | drivers/pci/msi.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 84da13c00a34..5a40516444f3 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -487,7 +487,6 @@ EXPORT_SYMBOL_GPL(pci_restore_msi_state); static ssize_t msi_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct pci_dev *pdev = to_pci_dev(dev); struct msi_desc *entry; unsigned long irq; int retval; @@ -496,12 +495,11 @@ static ssize_t msi_mode_show(struct device *dev, struct device_attribute *attr, if (retval) return retval; - list_for_each_entry(entry, &pdev->msi_list, list) { - if (entry->irq == irq) { - return sprintf(buf, "%s\n", - entry->msi_attrib.is_msix ? "msix" : "msi"); - } - } + entry = irq_get_msi_desc(irq); + if (entry) + return sprintf(buf, "%s\n", + entry->msi_attrib.is_msix ? "msix" : "msi"); + return -ENODEV; } |
