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Date: Wed,  5 Jun 2024 18:02:31 +0000
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Message-ID: <20240605180238.2617808-1-joychakr@google.com>
Subject: [PATCH v1 10/17] mtd: core: Change nvmem reg_read/write return type
From: Joy Chakraborty <joychakr@google.com>
To: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>, 
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>, 
	AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>, 
	Lars-Peter Clausen <lars@metafoo.de>, Sakari Ailus <sakari.ailus@linux.intel.com>, 
	Bingbu Cao <bingbu.cao@intel.com>, Zhihao Cheng <chengzhihao1@huawei.com>, 
	Jerome Brunet <jbrunet@baylibre.com>, 
	Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org, 
	linux-iio@vger.kernel.org, linux-media@vger.kernel.org, 
	linux-i2c@vger.kernel.org, linux-gpio@vger.kernel.org, 
	linux-mtd@lists.infradead.org, linux-rtc@vger.kernel.org, 
	linux-arm-kernel@lists.infradead.org, linux-amlogic@lists.infradead.org, 
	linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, 
	linux-usb@vger.kernel.org, manugautam@google.com, 
	Joy Chakraborty <joychakr@google.com>, kernel test robot <lkp@intel.com>
Content-Type: text/plain; charset="UTF-8"

Change nvmem read/write function definition return type to ssize_t.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406050200.8BOdZUla-lkp@intel.com/
Signed-off-by: Joy Chakraborty <joychakr@google.com>
---
 drivers/mtd/mtdcore.c | 18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c
index 724f917f91ba..b13752ec2f1c 100644
--- a/drivers/mtd/mtdcore.c
+++ b/drivers/mtd/mtdcore.c
@@ -530,8 +530,8 @@ int mtd_pairing_groups(struct mtd_info *mtd)
 }
 EXPORT_SYMBOL_GPL(mtd_pairing_groups);
 
-static int mtd_nvmem_reg_read(void *priv, unsigned int offset,
-			      void *val, size_t bytes)
+static ssize_t mtd_nvmem_reg_read(void *priv, unsigned int offset,
+				  void *val, size_t bytes)
 {
 	struct mtd_info *mtd = priv;
 	size_t retlen;
@@ -541,7 +541,7 @@ static int mtd_nvmem_reg_read(void *priv, unsigned int offset,
 	if (err && err != -EUCLEAN)
 		return err;
 
-	return retlen == bytes ? 0 : -EIO;
+	return retlen;
 }
 
 static int mtd_nvmem_add(struct mtd_info *mtd)
@@ -919,8 +919,8 @@ static struct nvmem_device *mtd_otp_nvmem_register(struct mtd_info *mtd,
 	return nvmem;
 }
 
-static int mtd_nvmem_user_otp_reg_read(void *priv, unsigned int offset,
-				       void *val, size_t bytes)
+static ssize_t mtd_nvmem_user_otp_reg_read(void *priv, unsigned int offset,
+					   void *val, size_t bytes)
 {
 	struct mtd_info *mtd = priv;
 	size_t retlen;
@@ -930,11 +930,11 @@ static int mtd_nvmem_user_otp_reg_read(void *priv, unsigned int offset,
 	if (ret)
 		return ret;
 
-	return retlen == bytes ? 0 : -EIO;
+	return retlen;
 }
 
-static int mtd_nvmem_fact_otp_reg_read(void *priv, unsigned int offset,
-				       void *val, size_t bytes)
+static ssize_t mtd_nvmem_fact_otp_reg_read(void *priv, unsigned int offset,
+					   void *val, size_t bytes)
 {
 	struct mtd_info *mtd = priv;
 	size_t retlen;
@@ -944,7 +944,7 @@ static int mtd_nvmem_fact_otp_reg_read(void *priv, unsigned int offset,
 	if (ret)
 		return ret;
 
-	return retlen == bytes ? 0 : -EIO;
+	return retlen;
 }
 
 static int mtd_otp_nvmem_add(struct mtd_info *mtd)
-- 
2.45.1.467.gbab1589fc0-goog