linux-kernel - [PATCH v1 1/4] driver core: Ignore 0 in dev_err

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Message-ID: <20240821122233.3761645-2-andriy.shevchenko@linux.intel.com>
Date: Wed, 21 Aug 2024 15:20:40 +0300
From: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Hans de Goede <hdegoede@...hat.com>,
	linux-kernel@...r.kernel.org,
	platform-driver-x86@...r.kernel.org
Cc: "Rafael J. Wysocki" <rafael@...nel.org>,
	Daniel Scally <djrscally@...il.com>
Subject: [PATCH v1 1/4] driver core: Ignore 0 in dev_err_probe()

In the similar way, ignore 0 error code (AKA "success") in
dev_err_probe(). This helps to simplify a code such as

  if (ret < 0)
    return dev_err_probe(int3472->dev, ret, err_msg);

  return ret;

to

  return dev_err_probe(int3472->dev, ret, err_msg);

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/base/core.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 6d3897492285..144cb8c201fb 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -5046,6 +5046,10 @@ int dev_err_probe(const struct device *dev, int err, const char *fmt, ...)
 		 */
 		break;
 
+	case 0:
+		/* Success, no need to issue an error message */
+		break;
+
 	default:
 		dev_err(dev, "error %pe: %pV", ERR_PTR(err), &vaf);
 		break;
-- 
2.43.0.rc1.1336.g36b5255a03ac