The max_ep is the number of endpoint * 2.
But in dtd_complete_irq, it does again * 2, it will deference wrong memory
after scanning max_ep - 1.
The another similar problem is at USB_REQ_SET_FEATURE (the pipe number
should be 0 and max_ep - 1).
Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
Signed-off-by: Matthieu castet <matthieu.castet@xxxxxxxxxx>
---
Changes for v3:
- Add Signed-off-by: Matthieu castet <matthieu.castet@xxxxxxxxxx>
drivers/usb/gadget/fsl_udc_core.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/gadget/fsl_udc_core.c b/drivers/usb/gadget/fsl_udc_core.c
index dd28ef3..42074de 100644
--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -1430,7 +1430,7 @@ static void setup_received_irq(struct fsl_udc *udc,
int pipe = get_pipe_by_windex(wIndex);
struct fsl_ep *ep;
- if (wValue != 0 || wLength != 0 || pipe > udc->max_ep)
+ if (wValue != 0 || wLength != 0 || pipe >= udc->max_ep)
break;
ep = get_ep_by_pipe(udc, pipe);
@@ -1673,7 +1673,7 @@ static void dtd_complete_irq(struct fsl_udc *udc)
if (!bit_pos)
return;
- for (i = 0; i < udc->max_ep * 2; i++) {
+ for (i = 0; i < udc->max_ep; i++) {
ep_num = i >> 1;
direction = i % 2;
--
1.7.0.4
--
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