linux-kernel - [PATCH v1] driver core: Annotate dev_err_probe() with __must

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Date:   Wed, 26 Aug 2020 13:44:59 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Andrzej Hajda <a.hajda@...sung.com>, linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J . Wysocki" <rafael@...nel.org>
Cc:     Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1] driver core: Annotate dev_err_probe() with __must_check

We have got already new users of this API which interpret it differently
and miss the opportunity to optimize their code.

In order to avoid similar cases in the future, annotate dev_err_probe()
with __must_check.

Fixes: a787e5400a1c ("driver core: add device probe log helper")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 include/linux/device.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/device.h b/include/linux/device.h
index ca18da4768e3..f9d2e5703bbf 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -978,7 +978,7 @@ void device_links_supplier_sync_state_pause(void);
 void device_links_supplier_sync_state_resume(void);
 
 extern __printf(3, 4)
-int dev_err_probe(const struct device *dev, int err, const char *fmt, ...);
+int __must_check dev_err_probe(const struct device *dev, int err, const char *fmt, ...);
 
 /* Create alias, so I can be autoloaded. */
 #define MODULE_ALIAS_CHARDEV(major,minor) \
-- 
2.28.0