linux-kernel - [PATCH v1 5/5] pwm: core: Unify fwnode checks in the module

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Message-Id: <20210531154351.53614-5-andriy.shevchenko@linux.intel.com>
Date:   Mon, 31 May 2021 18:43:51 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Flavio Suligoi <f.suligoi@...m.it>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Thierry Reding <thierry.reding@...il.com>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-pwm@...r.kernel.org
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>, Lee Jones <lee.jones@...aro.org>
Subject: [PATCH v1 5/5] pwm: core: Unify fwnode checks in the module

Historically we have two different approaches on how to check type of fwnode.
Unify them using the latest and greatest fwnode related APIs.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/pwm/core.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/drivers/pwm/core.c b/drivers/pwm/core.c
index 2223a9b6644b..135eb5af9191 100644
--- a/drivers/pwm/core.c
+++ b/drivers/pwm/core.c
@@ -838,7 +838,7 @@ EXPORT_SYMBOL_GPL(of_pwm_get);
  * Returns: A pointer to the requested PWM device or an ERR_PTR()-encoded
  * error code on failure.
  */
-static struct pwm_device *acpi_pwm_get(struct fwnode_handle *fwnode)
+static struct pwm_device *acpi_pwm_get(const struct fwnode_handle *fwnode)
 {
 	struct pwm_device *pwm = ERR_PTR(-ENODEV);
 	struct fwnode_reference_args args;
@@ -922,6 +922,7 @@ void pwm_remove_table(struct pwm_lookup *table, size_t num)
  */
 struct pwm_device *pwm_get(struct device *dev, const char *con_id)
 {
+	const struct fwnode_handle *fwnode = dev ? dev_fwnode(dev) : NULL;
 	const char *dev_id = dev ? dev_name(dev) : NULL;
 	struct pwm_device *pwm;
 	struct pwm_chip *chip;
@@ -932,12 +933,12 @@ struct pwm_device *pwm_get(struct device *dev, const char *con_id)
 	int err;
 
 	/* look up via DT first */
-	if (IS_ENABLED(CONFIG_OF) && dev && dev->of_node)
-		return of_pwm_get(dev, dev->of_node, con_id);
+	if (is_of_node(fwnode))
+		return of_pwm_get(dev, to_of_node(fwnode), con_id);
 
 	/* then lookup via ACPI */
-	if (dev && is_acpi_node(dev->fwnode)) {
-		pwm = acpi_pwm_get(dev->fwnode);
+	if (is_acpi_node(fwnode)) {
+		pwm = acpi_pwm_get(fwnode);
 		if (!IS_ERR(pwm) || PTR_ERR(pwm) != -ENOENT)
 			return pwm;
 	}
-- 
2.30.2