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minimal fixes for drivers/usb/gadget/m66592-udc.c 

still looks racy (and definitely leaks)

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Al Viro 2007-07-15 20:59:22 +01:00 committed by Linus Torvalds
parent 8d9107e8c5
commit 53b6795002
1 changed files with 4 additions and 23 deletions
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27
drivers/usb/gadget/m66592-udc.c
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@ -937,6 +937,7 @@ static void get_status(struct m66592 *m66592, struct usb_ctrlrequest *ctrl)
*m66592->ep0_buf = status;
m66592->ep0_req->buf = m66592->ep0_buf;
m66592->ep0_req->length = 2;
/* AV: what happens if we get called again before that gets through? */
m66592_queue(m66592->gadget.ep0, m66592->ep0_req, GFP_KERNEL);
}
@ -1254,24 +1255,6 @@ static void m66592_free_request(struct usb_ep *_ep, struct usb_request *_req)
kfree(req);
}
static void *m66592_alloc_buffer(struct usb_ep *_ep, unsigned bytes,
dma_addr_t *dma, gfp_t gfp_flags)
{
void *buf;
buf = kzalloc(bytes, gfp_flags);
if (dma)
*dma = virt_to_bus(buf);
return buf;
}
static void m66592_free_buffer(struct usb_ep *_ep, void *buf,
dma_addr_t dma, unsigned bytes)
{
kfree(buf);
}
static int m66592_queue(struct usb_ep *_ep, struct usb_request *_req,
gfp_t gfp_flags)
{
@ -1378,9 +1361,6 @@ static struct usb_ep_ops m66592_ep_ops = {
.alloc_request = m66592_alloc_request,
.free_request = m66592_free_request,
.alloc_buffer = m66592_alloc_buffer,
.free_buffer = m66592_free_buffer,
.queue = m66592_queue,
.dequeue = m66592_dequeue,
@ -1603,11 +1583,12 @@ static int __init m66592_probe(struct platform_device *pdev)
the_controller = m66592;
/* AV: leaks */
m66592->ep0_req = m66592_alloc_request(&m66592->ep[0].ep, GFP_KERNEL);
if (m66592->ep0_req == NULL)
goto clean_up;
m66592->ep0_buf = m66592_alloc_buffer(&m66592->ep[0].ep, 2, NULL,
GFP_KERNEL);
/* AV: leaks, and do we really need it separately allocated? */
m66592->ep0_buf = kzalloc(2, GFP_KERNEL);
if (m66592->ep0_buf == NULL)
goto clean_up;