From: Felipe Balbi <balbi@xxxxxx>
Case we can't allocate struct musb_request,
prevent a NULL pointer dereference by returning
early.
Signed-off-by: Felipe Balbi <balbi@xxxxxx>
---
drivers/usb/musb/musb_gadget.c | 13 ++++++++-----
1 files changed, 8 insertions(+), 5 deletions(-)
diff --git a/drivers/usb/musb/musb_gadget.c b/drivers/usb/musb/musb_gadget.c
index 5d81504..edff014 100644
--- a/drivers/usb/musb/musb_gadget.c
+++ b/drivers/usb/musb/musb_gadget.c
@@ -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;
}
--
1.7.3.2
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