[patch V2 06/19] PCI/MSI: Correct misleading comments

Thomas Gleixner
2021-07-29T22:34:59Z

The comments about preserving the cached state in pci_msi[x]_shutdown() are
misleading as the MSI descriptors are freed right after those functions
return. So there is nothing to restore.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
---
V2: New patch
---
drivers/pci/msi.c | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -961,7 +961,6 @@ static void pci_msi_shutdown(struct pci_

/* Return the device with MSI unmasked as initial states */
mask = msi_mask(desc->msi_attrib.multi_cap);
- /* Keep cached state to be restored */
__pci_msi_desc_mask_irq(desc, mask, 0);

/* Restore dev->irq to its default pin-assertion IRQ */
@@ -1047,10 +1046,8 @@ static void pci_msix_shutdown(struct pci
}

/* Return the device with MSI-X masked as initial states */
- for_each_pci_msi_entry(entry, dev) {
- /* Keep cached states to be restored */
+ for_each_pci_msi_entry(entry, dev)
__pci_msix_desc_mask_irq(entry, 1);
- }

pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_ENABLE, 0);
pci_intx_for_msi(dev, 1);