diff options
| author | Jing Zhang <[email protected]> | 2024-08-22 11:33:31 +0800 |
|---|---|---|
| committer | Will Deacon <[email protected]> | 2024-08-23 16:03:56 +0100 |
| commit | a3dd920977dccc453c550260c4b7605b280b79c3 (patch) | |
| tree | 60bbf551524244740398216194e1edfb3fb2dcf8 | |
| parent | 3cce331ee2a4cc99328757a9bd297ad9a39609e8 (diff) | |
drivers/perf: Fix ali_drw_pmu driver interrupt status clearing
The alibaba_uncore_pmu driver forgot to clear all interrupt status
in the interrupt processing function. After the PMU counter overflow
interrupt occurred, an interrupt storm occurred, causing the system
to hang.
Therefore, clear the correct interrupt status in the interrupt handling
function to fix it.
Fixes: cf7b61073e45 ("drivers/perf: add DDR Sub-System Driveway PMU driver for Yitian 710 SoC")
Signed-off-by: Jing Zhang <[email protected]>
Reviewed-by: Shuai Xue <[email protected]>
Acked-by: Mark Rutland <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Will Deacon <[email protected]>
| -rw-r--r-- | drivers/perf/alibaba_uncore_drw_pmu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/perf/alibaba_uncore_drw_pmu.c b/drivers/perf/alibaba_uncore_drw_pmu.c index 38a2947ae813..c6ff1bc7d336 100644 --- a/drivers/perf/alibaba_uncore_drw_pmu.c +++ b/drivers/perf/alibaba_uncore_drw_pmu.c @@ -400,7 +400,7 @@ static irqreturn_t ali_drw_pmu_isr(int irq_num, void *data) } /* clear common counter intr status */ - clr_status = FIELD_PREP(ALI_DRW_PMCOM_CNT_OV_INTR_MASK, 1); + clr_status = FIELD_PREP(ALI_DRW_PMCOM_CNT_OV_INTR_MASK, status); writel(clr_status, drw_pmu->cfg_base + ALI_DRW_PMU_OV_INTR_CLR); } |