From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 21/23] USB: gadget: fsl_udc: Be more tolerant in fsl_ep_dequeue
Date: Mon, 21 Jul 2014 17:14:45 +0200 [thread overview]
Message-ID: <1405955687-27433-22-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1405955687-27433-1-git-send-email-s.hauer@pengutronix.de>
When an endpoint hasn't been enabled ep->desc is NULL and
fsl_ep_dequeue crashes with a NULL pointer dereference. Check
ep->desc before continuing.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/usb/gadget/fsl_udc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/fsl_udc.c b/drivers/usb/gadget/fsl_udc.c
index 5266fb6..5a625d1 100644
--- a/drivers/usb/gadget/fsl_udc.c
+++ b/drivers/usb/gadget/fsl_udc.c
@@ -1280,7 +1280,7 @@ static int fsl_ep_dequeue(struct usb_ep *_ep, struct usb_request *_req)
int ep_num, stopped, ret = 0;
u32 epctrl;
- if (!_ep || !_req)
+ if (!_ep || !_req || !ep->desc)
return -EINVAL;
stopped = ep->stopped;
--
2.0.1
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next prev parent reply other threads:[~2014-07-21 15:15 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-21 15:14 USB Gadget updates Sascha Hauer
2014-07-21 15:14 ` [PATCH 01/23] USB: gadget: Update to 3.15 Sascha Hauer
2014-07-21 15:14 ` [PATCH 02/23] USB: gadget: dequeue descriptor before freeing it Sascha Hauer
2014-07-21 15:14 ` [PATCH 03/23] USB: gadget: composite: Break out of potential endless loop Sascha Hauer
2014-07-21 15:14 ` [PATCH 04/23] USB: gadget: fsl_udc: Warn about freeing queued descriptors Sascha Hauer
2014-07-21 15:14 ` [PATCH 05/23] USB: gadget: usbserial: Always enable console Sascha Hauer
2014-07-21 15:14 ` [PATCH 06/23] param: Add dev_add_param_string Sascha Hauer
2014-07-21 15:14 ` [PATCH 07/23] USB: gadget: specify vendor/product id with device parameters Sascha Hauer
2014-07-21 15:14 ` [PATCH 08/23] USB: gadget: DFU: remove unused code Sascha Hauer
2014-07-21 15:14 ` [PATCH 09/23] USB: gadget: DFU: Use usb_assign_descriptors/usb_free_all_descriptors Sascha Hauer
2014-07-21 15:14 ` [PATCH 10/23] USB: gadget: DFU: Move locally used defines/structs to dfu driver Sascha Hauer
2014-07-21 15:14 ` [PATCH 11/23] Add function to parse a string in dfu format Sascha Hauer
2014-07-21 15:14 ` [PATCH 12/23] USB: gadget: DFU: Move stuff to dfu_bind Sascha Hauer
2014-07-21 15:14 ` [PATCH 13/23] USB: gadget: DFU: use usb_gstrings_attach Sascha Hauer
2014-07-21 15:14 ` [PATCH 14/23] USB: gadget: DFU: free resources when usb_gadget_poll fails Sascha Hauer
2014-07-21 15:14 ` [PATCH 15/23] USB: gadget: DFU: return -EINTR when interrupted Sascha Hauer
2014-07-21 15:14 ` [PATCH 16/23] USB: gadget: DFU: register as USB function Sascha Hauer
2014-07-21 15:14 ` [PATCH 17/23] USB: gadget: DFU: drop app idle state Sascha Hauer
2014-07-21 15:14 ` [PATCH 18/23] Add release string Sascha Hauer
2014-07-21 15:14 ` [PATCH 19/23] USB: gadget: Add Android fastboot support Sascha Hauer
2014-07-22 7:25 ` Holger Schurig
2014-07-22 9:23 ` Sascha Hauer
2014-07-21 15:14 ` [PATCH 20/23] USB: gadget: Add a multi function gadget Sascha Hauer
2014-07-21 15:14 ` Sascha Hauer [this message]
2014-07-21 15:14 ` [PATCH 22/23] Documentation: Add documentation for USB serial console Sascha Hauer
2014-07-21 15:14 ` [PATCH 23/23] Documentation: Add documentation for Fastboot and Composite Multifunction Gadget Sascha Hauer
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