| Date | Thu, 01 Jul 2010 10:42:15 -0700 | From | Greg KH <> | Subject | [045/200] USB: mxc: gadget: Fix bitfield for calculating maximum packet size |
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2.6.34-stable review patch. If anyone has any objections, please let me know.
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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(-)
--- 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;
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