[045/200] USB: mxc: gadget: Fix bitfield for calculating maximum packet size
diff mbox series

Message ID 20100701174250.222358881@clark.site
State New, archived
Headers show
Series
  • 2.6.34.1 stable review
Related show

Commit Message

Greg KH July 1, 2010, 5:42 p.m. UTC
2.6.34-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Dinh Nguyen <Dinh.Nguyen@freescale.com>

commit 88e3b59b5adce5b12e205af0e34d518ba0dcdc0c upstream.

The max packet length bit mask used for isochronous endpoints
should be 0x7FF instead of 0x8FF. 0x8FF will actually clear
higher-order bits in the max packet length field.

This patch applies to 2.6.34-rc6.

Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/usb/gadget/fsl_udc_core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)



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Patch
diff mbox series

--- a/drivers/usb/gadget/fsl_udc_core.c
+++ b/drivers/usb/gadget/fsl_udc_core.c
@@ -489,7 +489,7 @@  static int fsl_ep_enable(struct usb_ep *
 	case USB_ENDPOINT_XFER_ISOC:
 		/* Calculate transactions needed for high bandwidth iso */
 		mult = (unsigned char)(1 + ((max >> 11) & 0x03));
-		max = max & 0x8ff;	/* bit 0~10 */
+		max = max & 0x7ff;	/* bit 0~10 */
 		/* 3 transactions at most */
 		if (mult > 3)
 			goto en_done;