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usb: musb: gadget: prevent a NULL pointer dereference 

Case we can't allocate struct musb_request,
prevent a NULL pointer dereference by returning
early.

Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Felipe Balbi 2010-12-01 11:03:54 +02:00
parent fcf173e451
commit 0607f86229
1 changed files with 8 additions and 5 deletions
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13
drivers/usb/musb/musb_gadget.c
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@ -1072,13 +1072,16 @@ struct usb_request *musb_alloc_request(struct usb_ep *ep, gfp_t gfp_flags)
struct musb_request *request = NULL;
request = kzalloc(sizeof *request, gfp_flags);
if (request) {
INIT_LIST_HEAD(&request->request.list);
request->request.dma = DMA_ADDR_INVALID;
request->epnum = musb_ep->current_epnum;
request->ep = musb_ep;
if (!request) {
DBG(4, "not enough memory\n");
return NULL;
}
INIT_LIST_HEAD(&request->request.list);
request->request.dma = DMA_ADDR_INVALID;
request->epnum = musb_ep->current_epnum;
request->ep = musb_ep;
return &request->request;
}