From db601f3ad3f7e0e8acac230c658aa434f26e48cd Mon Sep 17 00:00:00 2001 From: Antonio Borneo Date: Sun, 10 Dec 2017 16:19:56 +0100 Subject: [PATCH] mtd: mchp23k256: propagate return value of spi_sync() The call to spi_sync() can fail. Check the return value and propagate it. Signed-off-by: Antonio Borneo Reviewed-by: Andrew Lunn Signed-off-by: Boris Brezillon --- drivers/mtd/devices/mchp23k256.c | 18 ++++++++++++++---- 1 file changed, 14 insertions(+), 4 deletions(-) diff --git a/drivers/mtd/devices/mchp23k256.c b/drivers/mtd/devices/mchp23k256.c index 8956b7dcc984..75f71d166fd6 100644 --- a/drivers/mtd/devices/mchp23k256.c +++ b/drivers/mtd/devices/mchp23k256.c @@ -68,6 +68,7 @@ static int mchp23k256_write(struct mtd_info *mtd, loff_t to, size_t len, struct spi_transfer transfer[2] = {}; struct spi_message message; unsigned char command[MAX_CMD_SIZE]; + int ret; spi_message_init(&message); @@ -84,12 +85,16 @@ static int mchp23k256_write(struct mtd_info *mtd, loff_t to, size_t len, mutex_lock(&flash->lock); - spi_sync(flash->spi, &message); + ret = spi_sync(flash->spi, &message); + + mutex_unlock(&flash->lock); + + if (ret) + return ret; if (retlen && message.actual_length > sizeof(command)) *retlen += message.actual_length - sizeof(command); - mutex_unlock(&flash->lock); return 0; } @@ -100,6 +105,7 @@ static int mchp23k256_read(struct mtd_info *mtd, loff_t from, size_t len, struct spi_transfer transfer[2] = {}; struct spi_message message; unsigned char command[MAX_CMD_SIZE]; + int ret; spi_message_init(&message); @@ -117,12 +123,16 @@ static int mchp23k256_read(struct mtd_info *mtd, loff_t from, size_t len, mutex_lock(&flash->lock); - spi_sync(flash->spi, &message); + ret = spi_sync(flash->spi, &message); + + mutex_unlock(&flash->lock); + + if (ret) + return ret; if (retlen && message.actual_length > sizeof(command)) *retlen += message.actual_length - sizeof(command); - mutex_unlock(&flash->lock); return 0; } -- 2.30.2