Commit e11ece5a authored by Yijing Wang's avatar Yijing Wang Committed by Bjorn Helgaas
Browse files

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: default avatarYijing Wang <wangyijing@huawei.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
parent 0dae508a

drivers/pci/msi.c

+5 −7
Original line number Diff line number Diff line
@@ -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) {

	entry = irq_get_msi_desc(irq);

	if (entry)

		return sprintf(buf, "%s\n",

				entry->msi_attrib.is_msix ? "msix" : "msi");

		}

	}



	return -ENODEV;

}