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USB: fsl_usb2_udc: fix potential queue head corruption

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Clear next TD field and status field in queue head initialization code
to prevent unpredictable result caused by residue of usb reset.

Signed-off-by: Li Yang <leoli@freescale.com>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Li Yang 2009-02-13 16:14:39 +08:00 committed by Greg Kroah-Hartman
parent 64e71303e4
commit 9a6e184c80
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/gadget/fsl_usb2_udc.c
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@ -404,7 +404,10 @@ static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num,
}
if (zlt)
tmp |= EP_QUEUE_HEAD_ZLT_SEL;
p_QH->max_pkt_length = cpu_to_le32(tmp);
p_QH->next_dtd_ptr = 1;
p_QH->size_ioc_int_sts = 0;
return;
}