diff options
| author | Frank Li <Frank.Li@nxp.com> | 2017-06-28 11:36:57 -0500 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2019-02-12 10:27:09 +0800 |
| commit | 9079d57f3f8ae21ff36bff9b7d3050bafecbfac5 (patch) | |
| tree | 4fa8ae25a6386e7157d38279993f4182083068ef /drivers/perf | |
| parent | 6e192983b0eed9d85d9d1371f94aae946e8251fc (diff) | |
MLK-15300-1 perf: fixed crash when irq have not assigned in dts file
[ 28.061044] perf[2494]: PC Alignment exception: pc=0000000072656d69 sp=ffff800032f2bd30
[ 28.069061] Internal error: Oops - SP/PC alignment exception: 8a000000 1 PREEMPT SMP
[ 28.077066] Modules linked in:
[ 28.080128] CPU: 2 PID: 2494 Comm: perf Not tainted 4.9.11-02540-g3ebe22c #52
[ 28.087263] Hardware name: Freescale i.MX8QXP LPDDR4 ARM2 (DT)
[ 28.093093] task: ffff80002e097080 task.stack: ffff800032f28000
[ 28.099011] PC is at 0x72656d69
[ 28.102163] LR is at perf_try_init_event+0x98/0xb0
[ 28.106950] pc : [<0000000072656d69>] lr : [<ffff0000081594e0>] pstate: 60000145
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Diffstat (limited to 'drivers/perf')
| -rw-r--r-- | drivers/perf/ddr-perf.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/perf/ddr-perf.c b/drivers/perf/ddr-perf.c index 2ec4ce9aa73d..cbebdf634d8f 100644 --- a/drivers/perf/ddr-perf.c +++ b/drivers/perf/ddr-perf.c @@ -449,11 +449,13 @@ static int ddr_perf_probe(struct platform_device *pdev) pmu); if (ret < 0) { pr_err("Request irq failed: %d", ret); - goto ddr_perf_err; + goto ddr_perf_irq_err; } return 0; +ddr_perf_irq_err: + perf_pmu_unregister(&(pmu->pmu)); ddr_perf_err: pr_warn("i.MX8 DDR Perf PMU failed (%d), disabled\n", ret); kfree(pmu); |