linux-kernel - [PATCH 4.15 180/202] pinctrl: sx150x: Add a static gpio/pinctrl pin range mapping

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Message-Id: <20180215151722.282779075@linuxfoundation.org>
Date:   Thu, 15 Feb 2018 16:18:00 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Linus Walleij <linus.walleij@...aro.org>,
        Peter Rosin <peda@...ntia.se>
Subject: [PATCH 4.15 180/202] pinctrl: sx150x: Add a static gpio/pinctrl pin range mapping

4.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Peter Rosin <peda@...ntia.se>

commit b930151e5b55a0e62a3aad06876de891ac980471 upstream.

Without such a range, gpiolib fails with -EPROBE_DEFER, pending the
addition of the range. So, without a range, gpiolib will keep
deferring indefinitely.

Fixes: 9e80f9064e73 ("pinctrl: Add SX150X GPIO Extender Pinctrl Driver")
Fixes: e10f72bf4b3e ("gpio: gpiolib: Generalise state persistence beyond sleep")
Suggested-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Peter Rosin <peda@...ntia.se>
Signed-off-by: Linus Walleij <linus.walleij@...aro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/pinctrl/pinctrl-sx150x.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/pinctrl/pinctrl-sx150x.c
+++ b/drivers/pinctrl/pinctrl-sx150x.c
@@ -1193,6 +1193,11 @@ static int sx150x_probe(struct i2c_clien
 	if (ret)
 		return ret;
 
+	ret = gpiochip_add_pin_range(&pctl->gpio, dev_name(dev),
+				     0, 0, pctl->data->npins);
+	if (ret)
+		return ret;
+
 	/* Add Interrupt support if an irq is specified */
 	if (client->irq > 0) {
 		pctl->irq_chip.name = devm_kstrdup(dev, client->name,