Patch "soc/fsl/qe: fix gpio save_regs functions" has been added to the 4.8-stable tree

Patch "soc/fsl/qe: fix gpio save_regs functions" has been added to the 4.8-stable tree

[gregkh]

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

    soc/fsl/qe: fix gpio save_regs functions

to the 4.8-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:
     soc-fsl-qe-fix-gpio-save_regs-functions.patch
and it can be found in the queue-4.8 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 5dc6f3fedee58efa343e822558fc3e2f0eb2ad1f Mon Sep 17 00:00:00 2001
From: Christophe Leroy <christophe.leroy@c-s.fr>
Date: Tue, 6 Sep 2016 00:52:16 +0200
Subject: soc/fsl/qe: fix gpio save_regs functions

From: Christophe Leroy <christophe.leroy@c-s.fr>

commit 5dc6f3fedee58efa343e822558fc3e2f0eb2ad1f upstream.

of_mm_gpiochip_add_data() calls mm_gc->save_regs() before
setting the data. Therefore ->save_regs() cannot use
gpiochip_get_data()

An Oops is encountered without this fix.

fixes: 1e714e54b5ca5 ("powerpc: qe_lib-gpio: use gpiochip data pointer")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Scott Wood <oss@buserror.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/soc/fsl/qe/gpio.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/soc/fsl/qe/gpio.c
+++ b/drivers/soc/fsl/qe/gpio.c
@@ -41,7 +41,8 @@ struct qe_gpio_chip {
 
 static void qe_gpio_save_regs(struct of_mm_gpio_chip *mm_gc)
 {
-	struct qe_gpio_chip *qe_gc = gpiochip_get_data(&mm_gc->gc);
+	struct qe_gpio_chip *qe_gc =
+		container_of(mm_gc, struct qe_gpio_chip, mm_gc);
 	struct qe_pio_regs __iomem *regs = mm_gc->regs;
 
 	qe_gc->cpdata = in_be32(&regs->cpdata);


Patches currently in stable-queue which might be from christophe.leroy@c-s.fr are

queue-4.8/soc-fsl-qe-fix-oops-on-cpm1-and-likely-cpm2.patch
queue-4.8/soc-fsl-qe-fix-gpio-save_regs-functions.patch