Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1228199

[PATCH 3/3] usb: gadget: f_midi: check for error on usb_ep_queue

Show all headers | View raw

From: "Felipe F. Tonello" <eu@felipetonello.com>

f_midi is not checking whether there is an error on usb_ep_queue
request, ignoring potential problems, such as memory leaks.

Signed-off-by: Felipe F. Tonello <eu@felipetonello.com>
---

Changes for v2:
  - Update code style.

Changes for v3:
  - Use ip_ep instead of out_ep. Fixed typo in commit message.

 drivers/usb/gadget/function/f_midi.c | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/gadget/function/f_midi.c b/drivers/usb/gadget/function/f_midi.c
index ad50a67..edb84ca 100644
--- a/drivers/usb/gadget/function/f_midi.c
+++ b/drivers/usb/gadget/function/f_midi.c
@@ -543,10 +543,16 @@ static void f_midi_transmit(struct f_midi *midi, struct usb_request *req)
 		}
 	}
 
-	if (req->length > 0)
-		usb_ep_queue(ep, req, GFP_ATOMIC);
-	else
+	if (req->length > 0) {
+		int err;
+
+		err = usb_ep_queue(ep, req, GFP_ATOMIC);
+		if (err < 0)
+			ERROR(midi, "%s queue req: %d\n",
+			      midi->in_ep->name, err);
+	} else {
 		free_ep_req(ep, req);
+	}
 }
 
 static void f_midi_in_tasklet(unsigned long data)
-- 
2.1.4

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | Next — Next in thread | Find similar | Unroll thread

Thread

[PATCH 3/3] usb: gadget: f_midi: check for error on usb_ep_queue eu@felipetonello.com - 2015-09-18 19:40 +0200
  Re: [PATCH 3/3] usb: gadget: f_midi: check for error on usb_ep_queue Felipe Tonello <eu@felipetonello.com> - 2015-09-21 11:30 +0200
    Re: [PATCH 3/3] usb: gadget: f_midi: check for error on usb_ep_queue Felipe Balbi <balbi@ti.com> - 2015-09-22 06:10 +0200

csiph-web