提交 9a6e184c 编写于 作者: L Li Yang 提交者: Greg Kroah-Hartman

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: NLi Yang <leoli@freescale.com>
Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
上级 64e71303
...@@ -404,7 +404,10 @@ static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num, ...@@ -404,7 +404,10 @@ static void struct_ep_qh_setup(struct fsl_udc *udc, unsigned char ep_num,
} }
if (zlt) if (zlt)
tmp |= EP_QUEUE_HEAD_ZLT_SEL; tmp |= EP_QUEUE_HEAD_ZLT_SEL;
p_QH->max_pkt_length = cpu_to_le32(tmp); p_QH->max_pkt_length = cpu_to_le32(tmp);
p_QH->next_dtd_ptr = 1;
p_QH->size_ioc_int_sts = 0;
return; return;
} }
......
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