This is a note to let you know that I've just added the patch titled
usb: chipidea: need to mask INT_STATUS when write otgsc
to the 3.12-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
usb-chipidea-need-to-mask-int_status-when-write-otgsc.patch
and it can be found in the queue-3.12 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 5332ff1fb63c46588656e4208201bc131627c878 Mon Sep 17 00:00:00 2001
From: Peter Chen <peter.chen@xxxxxxxxxxxxx>
Date: Fri, 10 Jan 2014 13:51:31 +0800
Subject: usb: chipidea: need to mask INT_STATUS when write otgsc
From: Peter Chen <peter.chen@xxxxxxxxxxxxx>
commit 5332ff1fb63c46588656e4208201bc131627c878 upstream.
For otgsc, both enable bits and status bits are in it. So we need
to make sure the status bits are not be cleared when write enable
bits. It can fix one bug that we plug in/out Micro AB cable fast,
and sometimes, the IDIS will be cleared wrongly when handle last
ID interrupt (ID 0->1), so the current interrupt will not occur.
For stable tree: 3.12+
Signed-off-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/usb/chipidea/otg.h | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
--- a/drivers/usb/chipidea/otg.h
+++ b/drivers/usb/chipidea/otg.h
@@ -1,5 +1,5 @@
/*
- * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ * Copyright (C) 2013-2014 Freescale Semiconductor, Inc.
*
* Author: Peter Chen
*
@@ -19,12 +19,12 @@ static inline void ci_clear_otg_interrup
static inline void ci_enable_otg_interrupt(struct ci_hdrc *ci, u32 bits)
{
- hw_write(ci, OP_OTGSC, bits, bits);
+ hw_write(ci, OP_OTGSC, bits | OTGSC_INT_STATUS_BITS, bits);
}
static inline void ci_disable_otg_interrupt(struct ci_hdrc *ci, u32 bits)
{
- hw_write(ci, OP_OTGSC, bits, 0);
+ hw_write(ci, OP_OTGSC, bits | OTGSC_INT_STATUS_BITS, 0);
}
int ci_hdrc_otg_init(struct ci_hdrc *ci);
Patches currently in stable-queue which might be from peter.chen@xxxxxxxxxxxxx are
queue-3.12/usb-chipidea-add-freescale-imx28-special-write-register-method.patch
queue-3.12/usb-chipidea-need-to-mask-int_status-when-write-otgsc.patch
queue-3.12/usb-chipidea-udc-using-multo-at-td-as-real-mult-value-for-iso-tx.patch
queue-3.12/usb-chipidea-imx-set-ci_hdrc_imx28_write_fix-for-imx28.patch
queue-3.12/usb-ehci-add-freescale-imx28-special-write-register-method.patch
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