Thread (59 messages) 59 messages, 6 authors, 2021-12-08

Re: [patch V2 14/23] PCI/MSI: Make msix_update_entries() smarter

From: Bjorn Helgaas <helgaas@kernel.org>
Date: 2021-12-07 20:57:41
Also in: ath11k, linux-hyperv, linux-mips, linux-pci, lkml, sparclinux, xen-devel

On Mon, Dec 06, 2021 at 11:27:46PM +0100, Thomas Gleixner wrote:
No need to walk the descriptors and check for each one whether the entries
pointer function argument is NULL. Do it once.

Signed-off-by: Thomas Gleixner <redacted>
Tested-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
quoted hunk ↗ jump to hunk
---
 drivers/pci/msi.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -642,8 +642,8 @@ static void msix_update_entries(struct p
 {
 	struct msi_desc *entry;
 
-	for_each_pci_msi_entry(entry, dev) {
-		if (entries) {
+	if (entries) {
+		for_each_pci_msi_entry(entry, dev) {
 			entries->vector = entry->irq;
 			entries++;
 		}
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