linux-kernel - [PATCH 1/3] usb: gadget: uvc: drop unnecessary check for always set req

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Date: Wed, 14 Feb 2024 00:28:00 +0100
From: Michael Grzeschik <m.grzeschik@...gutronix.de>
To: Laurent Pinchart <laurent.pinchart@...asonboard.com>, 
 Daniel Scally <dan.scally@...asonboard.com>, 
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Michael Grzeschik <m.grzeschik@...gutronix.de>
Subject: [PATCH 1/3] usb: gadget: uvc: drop unnecessary check for always
 set req

The pump function is running in an while(1) loop. The only case this
loop will be escaped is the two breaks. In both cases the req is valid.
Therefor the check for an not set req can be dropped and setting the req
to NULL does also has never any effect.

Signed-off-by: Michael Grzeschik <m.grzeschik@...gutronix.de>
---
 drivers/usb/gadget/function/uvc_video.c | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/drivers/usb/gadget/function/uvc_video.c b/drivers/usb/gadget/function/uvc_video.c
index dd3241fc6939d..b17c61c932652 100644
--- a/drivers/usb/gadget/function/uvc_video.c
+++ b/drivers/usb/gadget/function/uvc_video.c
@@ -623,14 +623,7 @@ static void uvcg_video_pump(struct work_struct *work)
 			uvcg_queue_cancel(queue, 0);
 			break;
 		}
-
-		/* The request is owned by  the endpoint / ready list. */
-		req = NULL;
 	}
-
-	if (!req)
-		return;
-
 	spin_lock_irqsave(&video->req_lock, flags);
 	if (video->is_enabled)
 		list_add_tail(&req->list, &video->req_free);

-- 
2.39.2