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AJvYcCUy5RuaNkY9dvsyto3qa0xZYKPaGrdKSJ9QL/yPlG+/38P/iBbcmdAMzlXqNKsFf8rJiS3hRm4sYiA/VJ5QKkH/9IHZOEwTBx2v X-Gm-Message-State: AOJu0YyXPsuq2/lO7bfbBHla3Yb4sSDcjlRy4XIjd4Yyx5ObmBJp9heM oknXh3XocWcVMS5ZM5QSQAznok1RaoUN5ekGicJIEGyW7JO090C7xss+pYwc9Sa+GBPI4ESyQXR osJ1jl77jyw== X-Google-Smtp-Source: AGHT+IGRE1l9odt4GG6RaI8M/uHdLkQEjh5Taz0VKgQ269YOTeE9TiCNJPVhuqv1Ry405YEIQ6hIdx0yWPVe/Q== X-Received: from joychakr.c.googlers.com ([fda3:e722:ac3:cc00:4f:4b78:c0a8:6ea]) (user=joychakr job=sendgmr) by 2002:a81:4c07:0:b0:62a:415b:a137 with SMTP id 00721157ae682-62cbb4a2295mr5047937b3.1.1717610568813; Wed, 05 Jun 2024 11:02:48 -0700 (PDT) Date: Wed, 5 Jun 2024 18:02:32 +0000 In-Reply-To: <20240605180238.2617808-1-joychakr@google.com> Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20240605180238.2617808-1-joychakr@google.com> X-Mailer: git-send-email 2.45.1.467.gbab1589fc0-goog Message-ID: <20240605180238.2617808-2-joychakr@google.com> Subject: [PATCH v1 11/17] mtd: ubi: nvmem: Change nvmem reg_read/write return type From: Joy Chakraborty To: Srinivas Kandagatla , Greg Kroah-Hartman , AngeloGioacchino Del Regno , Lars-Peter Clausen , Sakari Ailus , Bingbu Cao , Zhihao Cheng , Jerome Brunet , Martin Blumenstingl 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 Change nvmem read/write function definition return type to ssize_t. Signed-off-by: Joy Chakraborty --- drivers/mtd/ubi/nvmem.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/mtd/ubi/nvmem.c b/drivers/mtd/ubi/nvmem.c index 8aeb9c428e51..eab14821343d 100644 --- a/drivers/mtd/ubi/nvmem.c +++ b/drivers/mtd/ubi/nvmem.c @@ -20,8 +20,8 @@ struct ubi_nvmem { struct list_head list; }; -static int ubi_nvmem_reg_read(void *priv, unsigned int from, - void *val, size_t bytes) +static ssize_t ubi_nvmem_reg_read(void *priv, unsigned int from, + void *val, size_t bytes) { size_t to_read, bytes_left = bytes; struct ubi_nvmem *unv = priv; @@ -55,7 +55,7 @@ static int ubi_nvmem_reg_read(void *priv, unsigned int from, if (err) return err; - return bytes_left == 0 ? 0 : -EIO; + return bytes - bytes_left; } static int ubi_nvmem_add(struct ubi_volume_info *vi)