linux-kernel - [RESEND PATCH 01/11] soundwire: bus: use correct driver name in error messages

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Message-Id: <20210326091514.20751-2-yung-chuan.liao@linux.intel.com>
Date:   Fri, 26 Mar 2021 17:15:04 +0800
From:   Bard Liao <yung-chuan.liao@...ux.intel.com>
To:     alsa-devel@...a-project.org, vkoul@...nel.org
Cc:     vinod.koul@...aro.org, linux-kernel@...r.kernel.org,
        gregkh@...uxfoundation.org, srinivas.kandagatla@...aro.org,
        rander.wang@...ux.intel.com, hui.wang@...onical.com,
        pierre-louis.bossart@...ux.intel.com, sanyog.r.kale@...el.com,
        bard.liao@...el.com
Subject: [RESEND PATCH 01/11] soundwire: bus: use correct driver name in error messages

From: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

None of the existing codec drivers set the sdw_driver.name, but
instead set sdw_driver.driver.name.

This leads to error messages such as
[   23.935355] rt700 sdw:2:25d:700:0: Probe of (null) failed: -19

We could remove this sdw_driver.name if it doesn't have any
purpose. This patch only suggests using the proper indirection.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@...el.com>
Reviewed-by: Kai Vehmanen <kai.vehmanen@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 drivers/soundwire/bus_type.c | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/drivers/soundwire/bus_type.c b/drivers/soundwire/bus_type.c
index 575b9bad99d5..893296f3fe39 100644
--- a/drivers/soundwire/bus_type.c
+++ b/drivers/soundwire/bus_type.c
@@ -82,6 +82,7 @@ static int sdw_drv_probe(struct device *dev)
 	struct sdw_slave *slave = dev_to_sdw_dev(dev);
 	struct sdw_driver *drv = drv_to_sdw_driver(dev->driver);
 	const struct sdw_device_id *id;
+	const char *name;
 	int ret;
 
 	/*
@@ -108,7 +109,10 @@ static int sdw_drv_probe(struct device *dev)
 
 	ret = drv->probe(slave, id);
 	if (ret) {
-		dev_err(dev, "Probe of %s failed: %d\n", drv->name, ret);
+		name = drv->name;
+		if (!name)
+			name = drv->driver.name;
+		dev_err(dev, "Probe of %s failed: %d\n", name, ret);
 		dev_pm_domain_detach(dev, false);
 		return ret;
 	}
@@ -174,11 +178,16 @@ static void sdw_drv_shutdown(struct device *dev)
  */
 int __sdw_register_driver(struct sdw_driver *drv, struct module *owner)
 {
+	const char *name;
+
 	drv->driver.bus = &sdw_bus_type;
 
 	if (!drv->probe) {
-		pr_err("driver %s didn't provide SDW probe routine\n",
-		       drv->name);
+		name = drv->name;
+		if (!name)
+			name = drv->driver.name;
+
+		pr_err("driver %s didn't provide SDW probe routine\n", name);
 		return -EINVAL;
 	}
 
-- 
2.17.1