The call to spi_sync() can fail.
Check the return value and propagate it.
Signed-off-by: Antonio Borneo <[email protected]>
---
To: David Woodhouse <[email protected]>
To: Brian Norris <[email protected]>
To: Boris Brezillon <[email protected]>
To: Marek Vasut <[email protected]>
To: Richard Weinberger <[email protected]>
To: Cyrille Pitchen <[email protected]>
To: Andrew Lunn <[email protected]>
To: Chris Packham <[email protected]>
To: Rob Herring <[email protected]>
To: [email protected]
Cc: [email protected]
---
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 787e9ec7..4c91c0e 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;
}
--
2.7.4
