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USB: mxc: gadget: Fix bitfield for calculating maximum packet size

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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>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Dinh Nguyen 2010-05-04 10:03:01 -05:00 committed by Greg Kroah-Hartman
parent 97dc7c61f1
commit 88e3b59b5a
1 changed files with 1 additions and 1 deletions
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2
drivers/usb/gadget/fsl_udc_core.c
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@ -489,7 +489,7 @@ static int fsl_ep_enable(struct usb_ep *_ep,
case USB_ENDPOINT_XFER_ISOC: case USB_ENDPOINT_XFER_ISOC:
/* Calculate transactions needed for high bandwidth iso */ /* Calculate transactions needed for high bandwidth iso */
mult = (unsigned char)(1 + ((max >> 11) & 0x03)); mult = (unsigned char)(1 + ((max >> 11) & 0x03));
max = max & 0x8ff; /* bit 0~10 */ max = max & 0x7ff; /* bit 0~10 */
/* 3 transactions at most */ /* 3 transactions at most */
if (mult > 3) if (mult > 3)
goto en_done; goto en_done;