linux-kernel - [PATCH 1/2] soundwire: add macro to selectively change error levels

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Date:   Wed, 31 Mar 2021 09:13:54 +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: [PATCH 1/2] soundwire: add macro to selectively change error levels

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

We sometimes discard -ENODATA when reporting errors and lose all
traces of issues in the console log, add a macro to add use dev_dbg()
in such cases.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
Reviewed-by: Rander Wang <rander.wang@...el.com>
Reviewed-by: Guennadi Liakhovetski <guennadi.liakhovetski@...ux.intel.com>
Signed-off-by: Bard Liao <yung-chuan.liao@...ux.intel.com>
---
 drivers/soundwire/bus.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/soundwire/bus.h b/drivers/soundwire/bus.h
index 40354469860a..8370216f95d4 100644
--- a/drivers/soundwire/bus.h
+++ b/drivers/soundwire/bus.h
@@ -227,4 +227,12 @@ int sdw_bwrite_no_pm_unlocked(struct sdw_bus *bus, u16 dev_num, u32 addr, u8 val
 void sdw_clear_slave_status(struct sdw_bus *bus, u32 request);
 int sdw_slave_modalias(const struct sdw_slave *slave, char *buf, size_t size);
 
+#define sdw_dev_dbg_or_err(dev, is_err, fmt, ...)			\
+	do {								\
+		if (is_err)						\
+			dev_err(dev, fmt, __VA_ARGS__);			\
+		else							\
+			dev_dbg(dev, fmt, __VA_ARGS__);			\
+	} while (0)
+
 #endif /* __SDW_BUS_H */
-- 
2.17.1