Patch "i2c: riic: fix restart condition" has been added to the 4.9-stable tree

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

i2c: riic: fix restart condition

to the 4.9-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:
i2c-riic-fix-restart-condition.patch
and it can be found in the queue-4.9 subdirectory.

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

From: Chris Brandt <[email protected]>
Date: Mon, 6 Mar 2017 15:20:51 -0500
Subject: i2c: riic: fix restart condition

From: Chris Brandt <[email protected]>

[ Upstream commit 2501c1bb054290679baad0ff7f4f07c714251f4c ]

While modifying the driver to use the STOP interrupt, the completion of the intermediate transfers need to wake the driver back up in order to initiate the next transfer (restart condition). Otherwise you get never ending interrupts and only the first transfer sent.

---
 drivers/i2c/busses/i2c-riic.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

@@ -218,8 +218,12 @@ static irqreturn_t riic_tend_isr(int irq
 	}
 
 	if (riic->is_last || riic->err) {
-		riic_clear_set_bit(riic, 0, ICIER_SPIE, RIIC_ICIER);
+		riic_clear_set_bit(riic, ICIER_TEIE, ICIER_SPIE, RIIC_ICIER);
 		writeb(ICCR2_SP, riic->base + RIIC_ICCR2);
+	} else {
+		/* Transfer is complete, but do not send STOP */
+		riic_clear_set_bit(riic, ICIER_TEIE, 0, RIIC_ICIER);
+		complete(&riic->msg_done);
 	}
 
 	return IRQ_HANDLED;

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

queue-4.9/i2c-riic-fix-restart-condition.patch