linux-kernel - [PATCH v1 2/9] pwm: lpss: Move exported symbols to PWM

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Date:   Tue,  6 Sep 2022 22:57:28 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        linux-kernel@...r.kernel.org, linux-pwm@...r.kernel.org
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
Subject: [PATCH v1 2/9] pwm: lpss: Move exported symbols to PWM_LPSS namespace

Avoid unnecessary pollution of the global symbol namespace by
moving library functions in to a specific namespace and import
that into the drivers that make use of the functions.

For more info: https://lwn.net/Articles/760045/

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/pwm/pwm-lpss-pci.c      | 1 +
 drivers/pwm/pwm-lpss-platform.c | 1 +
 drivers/pwm/pwm-lpss.c          | 2 +-
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/pwm/pwm-lpss-pci.c b/drivers/pwm/pwm-lpss-pci.c
index 75b778e839b3..9f2c666b95ec 100644
--- a/drivers/pwm/pwm-lpss-pci.c
+++ b/drivers/pwm/pwm-lpss-pci.c
@@ -92,3 +92,4 @@ module_pci_driver(pwm_lpss_driver_pci);
 
 MODULE_DESCRIPTION("PWM PCI driver for Intel LPSS");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(PWM_LPSS);
diff --git a/drivers/pwm/pwm-lpss-platform.c b/drivers/pwm/pwm-lpss-platform.c
index fcd80cca2f6d..96fde1b2b967 100644
--- a/drivers/pwm/pwm-lpss-platform.c
+++ b/drivers/pwm/pwm-lpss-platform.c
@@ -87,4 +87,5 @@ module_platform_driver(pwm_lpss_driver_platform);
 
 MODULE_DESCRIPTION("PWM platform driver for Intel LPSS");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(PWM_LPSS);
 MODULE_ALIAS("platform:pwm-lpss");
diff --git a/drivers/pwm/pwm-lpss.c b/drivers/pwm/pwm-lpss.c
index 36d4e83e6b79..a82a57eb2482 100644
--- a/drivers/pwm/pwm-lpss.c
+++ b/drivers/pwm/pwm-lpss.c
@@ -250,7 +250,7 @@ struct pwm_lpss_chip *pwm_lpss_probe(struct device *dev, struct resource *r,
 
 	return lpwm;
 }
-EXPORT_SYMBOL_GPL(pwm_lpss_probe);
+EXPORT_SYMBOL_NS_GPL(pwm_lpss_probe, PWM_LPSS);
 
 MODULE_DESCRIPTION("PWM driver for Intel LPSS");
 MODULE_AUTHOR("Mika Westerberg <mika.westerberg@...ux.intel.com>");
-- 
2.35.1