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32 lines
1.1 KiB
Diff
32 lines
1.1 KiB
Diff
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From 56c801e09a2b8fdc8f4ec889d7a9cec57d55f545 Mon Sep 17 00:00:00 2001
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From: Nikhil Badola <nikhil.badola@freescale.com>
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Date: Tue, 9 Jun 2015 16:47:17 +0530
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Subject: [PATCH] usb: gadget: Correct NULL pointer checking in fsl gadget
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Correct NULL pointer checking for endpoint descriptor
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before it gets dereferenced
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Signed-off-by: Nikhil Badola <nikhil.badola@freescale.com>
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Signed-off-by: Ran Wang <ran.wang_1@nxp.com>
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Reviewed-by: Peter Chen <peter.chen@nxp.com>
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---
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drivers/usb/gadget/udc/fsl_udc_core.c | 5 +++--
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1 file changed, 3 insertions(+), 2 deletions(-)
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--- a/drivers/usb/gadget/udc/fsl_udc_core.c
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+++ b/drivers/usb/gadget/udc/fsl_udc_core.c
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@@ -1052,10 +1052,11 @@ static int fsl_ep_fifo_status(struct usb
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u32 bitmask;
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struct ep_queue_head *qh;
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- ep = container_of(_ep, struct fsl_ep, ep);
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- if (!_ep || (!ep->ep.desc && ep_index(ep) != 0))
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+ if (!_ep || _ep->desc || !(_ep->desc->bEndpointAddress&0xF))
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return -ENODEV;
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+ ep = container_of(_ep, struct fsl_ep, ep);
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+
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udc = (struct fsl_udc *)ep->udc;
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if (!udc->driver || udc->gadget.speed == USB_SPEED_UNKNOWN)
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