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| author | Thomas Gleixner <tglx@linutronix.de> | 2021-12-10 23:18:49 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2021-12-16 22:16:37 +0100 |
| commit | 6ef7f771de0182141ef1a0863f27b12963e1d184 (patch) | |
| tree | b3b744ee4a255782349f187bdce07d4a6ab4d279 /kernel/irq/msi.c | |
| parent | b3f82364117a0b7f666ce023195b636c4803c46c (diff) | |
| download | linux-6ef7f771de0182141ef1a0863f27b12963e1d184.tar.gz linux-6ef7f771de0182141ef1a0863f27b12963e1d184.tar.bz2 linux-6ef7f771de0182141ef1a0863f27b12963e1d184.zip | |
genirq/msi: Use PCI device property
to determine whether this is MSI or MSIX instead of consulting MSI
descriptors.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221813.434156196@linutronix.de
Diffstat (limited to 'kernel/irq/msi.c')
| -rw-r--r-- | kernel/irq/msi.c | 17 |
1 files changed, 2 insertions, 15 deletions
diff --git a/kernel/irq/msi.c b/kernel/irq/msi.c index 4a7a7f0f5102..b3f73ef0376c 100644 --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -77,21 +77,8 @@ EXPORT_SYMBOL_GPL(get_cached_msi_msg); static ssize_t msi_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { - struct msi_desc *entry; - bool is_msix = false; - unsigned long irq; - int retval; - - retval = kstrtoul(attr->attr.name, 10, &irq); - if (retval) - return retval; - - entry = irq_get_msi_desc(irq); - if (!entry) - return -ENODEV; - - if (dev_is_pci(dev)) - is_msix = entry->pci.msi_attrib.is_msix; + /* MSI vs. MSIX is per device not per interrupt */ + bool is_msix = dev_is_pci(dev) ? to_pci_dev(dev)->msix_enabled : false; return sysfs_emit(buf, "%s\n", is_msix ? "msix" : "msi"); } |