From a621cc4bed97e49f5a8019f5215dec7e208a7c4d Mon Sep 17 00:00:00 2001 From: Ming Qian Date: Tue, 28 Jun 2022 06:19:52 +0100 Subject: [PATCH] media: amphion: release core lock before reset vpu core In reset vpu core, driver will wait for a response event, but if there are still some events unhandled, they will be handled first, driver may acquire core lock for that. So if we do reset in core lock, it may led to reset timeout. Fixes: 9f599f351e86a ("media: amphion: add vpu core driver") Signed-off-by: Ming Qian Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/platform/amphion/vpu_core.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/media/platform/amphion/vpu_core.c b/drivers/media/platform/amphion/vpu_core.c index 3cca7ae2355d..73faa50d2865 100644 --- a/drivers/media/platform/amphion/vpu_core.c +++ b/drivers/media/platform/amphion/vpu_core.c @@ -452,8 +452,13 @@ int vpu_inst_unregister(struct vpu_inst *inst) } vpu_core_check_hang(core); if (core->state == VPU_CORE_HANG && !core->instance_mask) { + int err; + dev_info(core->dev, "reset hang core\n"); - if (!vpu_core_sw_reset(core)) { + mutex_unlock(&core->lock); + err = vpu_core_sw_reset(core); + mutex_lock(&core->lock); + if (!err) { core->state = VPU_CORE_ACTIVE; core->hang_mask = 0; }