linux-kernel - [PATCH v2 03/13] iio: st_sensors_spi: Use vsprintf extension %pe for symbolic error name

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Message-Id: <944c9c32f38a46e9c8589e5297866faa12b2d4ed.1584897364.git.nish.malpani25@gmail.com>
Date:   Sun, 22 Mar 2020 22:53:05 +0530
From:   Nishant Malpani <nish.malpani25@...il.com>
To:     jic23@...nel.org
Cc:     andriy.shevchenko@...ux.intel.com, joe@...ches.com,
        knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        nish.malpani25@...il.com, linux-iio@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v2 03/13] iio: st_sensors_spi: Use vsprintf extension %pe for symbolic error name

Utilize %pe format specifier from vsprintf while printing error logs
with dev_err(). Discards the use of unnecessary explicit casting and
prints symbolic error name which might prove to be convenient during
debugging.

Signed-off-by: Nishant Malpani <nish.malpani25@...il.com>
---

Changes in v2:
  - Rewrite commit subject line outlining the usage of %pe.
  - Add a separator between regmap and its error name.

Based on conversations in [1] & [2].

[1] https://marc.info/?l=linux-iio&m=158427554607223&w=2
[2] https://marc.info/?l=linux-iio&m=158481647605891&w=2
---
 drivers/iio/common/st_sensors/st_sensors_spi.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/common/st_sensors/st_sensors_spi.c b/drivers/iio/common/st_sensors/st_sensors_spi.c
index 1275fb0eda31..efa93928b498 100644
--- a/drivers/iio/common/st_sensors/st_sensors_spi.c
+++ b/drivers/iio/common/st_sensors/st_sensors_spi.c
@@ -101,8 +101,8 @@ int st_sensors_spi_configure(struct iio_dev *indio_dev,
 
 	sdata->regmap = devm_regmap_init_spi(spi, config);
 	if (IS_ERR(sdata->regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap (%d)\n",
-			(int)PTR_ERR(sdata->regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap: %pe\n",
+			sdata->regmap);
 		return PTR_ERR(sdata->regmap);
 	}
 
-- 
2.20.1