diff mbox series

[v3,4/7] usb: mtu3: unlock @mtu->lock just before giving back request

Message ID 20230417025203.18097-4-chunfeng.yun@mediatek.com
State Accepted
Commit ed50be81d536cdb25d00befe6ca21cd02f1c509d
Headers show
Series [v3,1/7] usb: mtu3: give back request when rx error happens | expand

Commit Message

Chunfeng Yun (云春峰) April 17, 2023, 2:52 a.m. UTC 
No need unlock @mtu->lock when unmap request, unlock it just before
giving back request, due to we do not lock this spinlock when map
the request.

Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
---
v3: no changes
v2: add Reviewed-by AngeloGioacchino
---
 drivers/usb/mtu3/mtu3_gadget.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/usb/mtu3/mtu3_gadget.c b/drivers/usb/mtu3/mtu3_gadget.c
index c0264d5426bf..ad0eeac4332d 100644
--- a/drivers/usb/mtu3/mtu3_gadget.c
+++ b/drivers/usb/mtu3/mtu3_gadget.c
@@ -23,7 +23,6 @@  __acquires(mep->mtu->lock)
 		req->status = status;
 
 	trace_mtu3_req_complete(mreq);
-	spin_unlock(&mtu->lock);
 
 	/* ep0 makes use of PIO, needn't unmap it */
 	if (mep->epnum)
@@ -32,6 +31,7 @@  __acquires(mep->mtu->lock)
 	dev_dbg(mtu->dev, "%s complete req: %p, sts %d, %d/%d\n",
 		mep->name, req, req->status, req->actual, req->length);
 
+	spin_unlock(&mtu->lock);
 	usb_gadget_giveback_request(&mep->ep, req);
 	spin_lock(&mtu->lock);
 }