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Commit 9a6e184c authored by Li Yang's avatar Li Yang Committed by Greg Kroah-Hartman
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USB: fsl_usb2_udc: fix potential queue head corruption 



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: default avatarLi Yang <leoli@freescale.com>
Acked-by: default avatarDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent 64e71303

drivers/usb/gadget/fsl_usb2_udc.c

+3 −0
Original line number Diff line number Diff line
@@ -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;

}