From 473af03c1da59a31cbe35c3f124433a003cd8fcd 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 [ Upstream commit a621cc4bed97e49f5a8019f5215dec7e208a7c4d ] 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 Signed-off-by: Sasha Levin --- 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 68ad183925fdb..51a764713159a 100644 --- a/drivers/media/platform/amphion/vpu_core.c +++ b/drivers/media/platform/amphion/vpu_core.c @@ -455,8 +455,13 @@ 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; } -- 2.47.2