[tip: irq/msi] perf/smmuv3: Use msi_get_virq()

[tip-bot2 for Thomas Gleixner]

The following commit has been merged into the irq/msi branch of tip:

Commit-ID:     848456705565da8de0fac4f6487f2a04813f60cc
Gitweb:        https://git.kernel.org/tip/848456705565da8de0fac4f6487f2a04813f60cc
Author:        Thomas Gleixner <tglx@xxxxxxxxxxxxx>
AuthorDate:    Fri, 10 Dec 2021 23:19:29 +01:00
Committer:     Thomas Gleixner <tglx@xxxxxxxxxxxxx>
CommitterDate: Thu, 16 Dec 2021 22:16:41 +01:00

perf/smmuv3: Use msi_get_virq()

Let the core code fiddle with the MSI descriptor retrieval.

Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Reviewed-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
Reviewed-by: Jason Gunthorpe <jgg@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20211210221815.029143589@xxxxxxxxxxxxx

---
 drivers/perf/arm_smmuv3_pmu.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/perf/arm_smmuv3_pmu.c b/drivers/perf/arm_smmuv3_pmu.c
index 2263488..fdbc3ec 100644
--- a/drivers/perf/arm_smmuv3_pmu.c
+++ b/drivers/perf/arm_smmuv3_pmu.c
@@ -684,7 +684,6 @@ static void smmu_pmu_write_msi_msg(struct msi_desc *desc, struct msi_msg *msg)
 
 static void smmu_pmu_setup_msi(struct smmu_pmu *pmu)
 {
-	struct msi_desc *desc;
 	struct device *dev = pmu->dev;
 	int ret;
 
@@ -701,9 +700,7 @@ static void smmu_pmu_setup_msi(struct smmu_pmu *pmu)
 		return;
 	}
 
-	desc = first_msi_entry(dev);
-	if (desc)
-		pmu->irq = desc->irq;
+	pmu->irq = msi_get_virq(dev, 0);
 
 	/* Add callback to free MSIs on teardown */
 	devm_add_action(dev, smmu_pmu_free_msis, dev);