Patch "rtc: ds1685: passing bogus values to irq_restore" has been added to the 4.4-stable tree

Patch "rtc: ds1685: passing bogus values to irq_restore" has been added to the 4.4-stable tree

[gregkh]

This is a note to let you know that I've just added the patch titled

    rtc: ds1685: passing bogus values to irq_restore

to the 4.4-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:
     rtc-ds1685-passing-bogus-values-to-irq_restore.patch
and it can be found in the queue-4.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.


>From 8c09b9fdecab1f4a289f07b46e2ad174b6641928 Mon Sep 17 00:00:00 2001
From: Dan Carpenter <dan.carpenter@oracle.com>
Date: Wed, 2 Mar 2016 13:07:45 +0300
Subject: rtc: ds1685: passing bogus values to irq_restore

From: Dan Carpenter <dan.carpenter@oracle.com>

commit 8c09b9fdecab1f4a289f07b46e2ad174b6641928 upstream.

We call spin_lock_irqrestore with "flags" set to zero instead of to the
value from spin_lock_irqsave().

Fixes: aaaf5fbf56f1 ('rtc: add driver for DS1685 family of real time clocks')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/rtc/rtc-ds1685.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/drivers/rtc/rtc-ds1685.c
+++ b/drivers/rtc/rtc-ds1685.c
@@ -187,9 +187,9 @@ ds1685_rtc_end_data_access(struct ds1685
  * Only use this where you are certain another lock will not be held.
  */
 static inline void
-ds1685_rtc_begin_ctrl_access(struct ds1685_priv *rtc, unsigned long flags)
+ds1685_rtc_begin_ctrl_access(struct ds1685_priv *rtc, unsigned long *flags)
 {
-	spin_lock_irqsave(&rtc->lock, flags);
+	spin_lock_irqsave(&rtc->lock, *flags);
 	ds1685_rtc_switch_to_bank1(rtc);
 }
 
@@ -1304,7 +1304,7 @@ ds1685_rtc_sysfs_ctrl_regs_store(struct
 {
 	struct ds1685_priv *rtc = dev_get_drvdata(dev);
 	u8 reg = 0, bit = 0, tmp;
-	unsigned long flags = 0;
+	unsigned long flags;
 	long int val = 0;
 	const struct ds1685_rtc_ctrl_regs *reg_info =
 		ds1685_rtc_sysfs_ctrl_regs_lookup(attr->attr.name);
@@ -1325,7 +1325,7 @@ ds1685_rtc_sysfs_ctrl_regs_store(struct
 	bit = reg_info->bit;
 
 	/* Safe to spinlock during a write. */
-	ds1685_rtc_begin_ctrl_access(rtc, flags);
+	ds1685_rtc_begin_ctrl_access(rtc, &flags);
 	tmp = rtc->read(rtc, reg);
 	rtc->write(rtc, reg, (val ? (tmp | bit) : (tmp & ~(bit))));
 	ds1685_rtc_end_ctrl_access(rtc, flags);


Patches currently in stable-queue which might be from dan.carpenter@oracle.com are

queue-4.4/misc-mic-scif-fix-wrap-around-tests.patch
queue-4.4/drm-amdkfd-uninitialized-variable-in-dbgdev_wave_control_set_registers.patch
queue-4.4/rtc-ds1685-passing-bogus-values-to-irq_restore.patch