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usb: musb: gadget: fix DMA length for OUT transfer

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DMA length should not go beyond the availabe space of request buffer,
so fix it.

Signed-off-by: Ming Lei <tom.leiming@gmail.com>
Acked-by: Anand Gadiyar <gadiyar@ti.com>
Cc: David Brownell <dbrownell@users.sourceforge.net>
Cc: Anand Gadiyar <gadiyar@ti.com>
Cc: Mike Frysinger <vapier@gentoo.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Ming Lei 2010-09-20 10:32:04 +03:00 committed by Greg Kroah-Hartman
parent 490e5fbe8c
commit 1018b4e44f
1 changed files with 3 additions and 2 deletions
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5
drivers/usb/musb/musb_gadget.c
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@ -659,10 +659,11 @@ static void rxstate(struct musb *musb, struct musb_request *req)
if (request->actual < request->length) {
int transfer_size = 0;
#ifdef USE_MODE1
transfer_size = min(request->length,
transfer_size = min(request->length - request->actual,
channel->max_len);
#else
transfer_size = len;
transfer_size = min(request->length - request->actual,
(unsigned)len);
#endif
if (transfer_size <= musb_ep->packet_sz)
musb_ep->dma->desired_mode = 0;