diff options
| author | Yicong Yang <yangyicong@hisilicon.com> | 2023-10-10 11:47:27 +0300 |
|---|---|---|
| committer | Suzuki K Poulose <suzuki.poulose@arm.com> | 2023-11-16 14:36:27 +0300 |
| commit | 46f69b197b6cd06c709581f7ad271bc02dbedb7a (patch) | |
| tree | c386dae7aa05b16261b71881ca3cf70e446e5f62 /drivers/hwtracing/ptt/hisi_ptt.c | |
| parent | 9d4408feff89f8d86b8f34339b08ceb5f8400190 (diff) | |
| download | linux-46f69b197b6cd06c709581f7ad271bc02dbedb7a.tar.xz | |
hwtracing: hisi_ptt: Disable interrupt after trace end
On trace end we disable the hardware but leave the interrupt
unmasked. Mask the interrupt to make the process reverse to
the start. No actual issue since hardware should send no
interrupt after disabled.
Signed-off-by: Yicong Yang <yangyicong@hisilicon.com>
Acked-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20231010084731.30450-2-yangyicong@huawei.com
Diffstat (limited to 'drivers/hwtracing/ptt/hisi_ptt.c')
| -rw-r--r-- | drivers/hwtracing/ptt/hisi_ptt.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/hwtracing/ptt/hisi_ptt.c b/drivers/hwtracing/ptt/hisi_ptt.c index a991ecb7515a..01a1eb0d4988 100644 --- a/drivers/hwtracing/ptt/hisi_ptt.c +++ b/drivers/hwtracing/ptt/hisi_ptt.c @@ -183,6 +183,10 @@ static void hisi_ptt_wait_dma_reset_done(struct hisi_ptt *hisi_ptt) static void hisi_ptt_trace_end(struct hisi_ptt *hisi_ptt) { writel(0, hisi_ptt->iobase + HISI_PTT_TRACE_CTRL); + + /* Mask the interrupt on the end */ + writel(HISI_PTT_TRACE_INT_MASK_ALL, hisi_ptt->iobase + HISI_PTT_TRACE_INT_MASK); + hisi_ptt->trace_ctrl.started = false; } |