Patch "pinctrl: single: Fix missing flush of posted write for a wakeirq" has been added to the 4.6-stable tree

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

pinctrl: single: Fix missing flush of posted write for a wakeirq

to the 4.6-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:
pinctrl-single-fix-missing-flush-of-posted-write-for-a-wakeirq.patch
and it can be found in the queue-4.6 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree, please let <[email protected]> know about it.

From: Tony Lindgren <[email protected]>
Date: Tue, 31 May 2016 14:17:06 -0700
Subject: pinctrl: single: Fix missing flush of posted write for a wakeirq

From: Tony Lindgren <[email protected]>

commit 0ac3c0a4025f41748a083bdd4970cb3ede802b15 upstream.

With many repeated suspend resume cycles, the pin specific wakeirq may not always work on omaps. This is because the write to enable the pin interrupt may not have reached the device over the interconnect before suspend happens.

Let's fix the issue with a flush of posted write with a readback.

---
 drivers/pinctrl/pinctrl-single.c |    3 +++
 1 file changed, 3 insertions(+)

@@ -1580,6 +1580,9 @@ static inline void pcs_irq_set(struct pc
 		else
 			mask &= ~soc_mask;
 		pcs->write(mask, pcswi->reg);
+
+		/* flush posted write */
+		mask = pcs->read(pcswi->reg);
 		raw_spin_unlock(&pcs->lock);
 	}
 

Patches currently in stable-queue which might be from [email protected] are

queue-4.6/pinctrl-single-fix-missing-flush-of-posted-write-for-a-wakeirq.patch