This is a note to let you know that I've just added the patch titled
pinctrl: mcp23s08: fix irq setup order
to the 4.14-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-mcp23s08-fix-irq-setup-order.patch
and it can be found in the queue-4.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 02e389e63e3523828fc3832f27e0341885f60f6f Mon Sep 17 00:00:00 2001
From: Dmitry Mastykin <mastichi@xxxxxxxxx>
Date: Thu, 28 Dec 2017 18:19:24 +0300
Subject: pinctrl: mcp23s08: fix irq setup order
From: Dmitry Mastykin <mastichi@xxxxxxxxx>
commit 02e389e63e3523828fc3832f27e0341885f60f6f upstream.
When using mcp23s08 module with gpio-keys, often (50% of boots)
it fails to get irq numbers with message:
"gpio-keys keys: Unable to get irq number for GPIO 0, error -6".
Seems that irqs must be setup before devm_gpiochip_add_data().
Signed-off-by: Dmitry Mastykin <mastichi@xxxxxxxxx>
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pinctrl/pinctrl-mcp23s08.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
--- a/drivers/pinctrl/pinctrl-mcp23s08.c
+++ b/drivers/pinctrl/pinctrl-mcp23s08.c
@@ -891,16 +891,16 @@ static int mcp23s08_probe_one(struct mcp
goto fail;
}
- ret = devm_gpiochip_add_data(dev, &mcp->chip, mcp);
- if (ret < 0)
- goto fail;
-
if (mcp->irq && mcp->irq_controller) {
ret = mcp23s08_irq_setup(mcp);
if (ret)
goto fail;
}
+ ret = devm_gpiochip_add_data(dev, &mcp->chip, mcp);
+ if (ret < 0)
+ goto fail;
+
mcp->pinctrl_desc.name = "mcp23xxx-pinctrl";
mcp->pinctrl_desc.pctlops = &mcp_pinctrl_ops;
mcp->pinctrl_desc.confops = &mcp_pinconf_ops;
Patches currently in stable-queue which might be from mastichi@xxxxxxxxx are
queue-4.14/pinctrl-mcp23s08-fix-irq-setup-order.patch