This is a note to let you know that I've just added the patch titled
fsi: core: Fix return of error values on failures
to the 5.13-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
fsi-core-fix-return-of-error-values-on-failures.patch
and it can be found in the queue-5.13 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 442bde6f604ad47238e10bc998a24ea6deebbe17
Author: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Date: Thu Jun 3 13:28:12 2021 +0100
fsi: core: Fix return of error values on failures
[ Upstream commit 910810945707fe9877ca86a0dca4e585fd05e37b ]
Currently the cfam_read and cfam_write functions return the provided
number of bytes given in the count parameter and not the error return
code in variable rc, hence all failures of read/writes are being
silently ignored. Fix this by returning the error code in rc.
Addresses-Coverity: ("Unused value")
Fixes: d1dcd6782576 ("fsi: Add cfam char devices")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Reviewed-by: Jeremy Kerr <jk@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20210603122812.83587-1-colin.king@xxxxxxxxxxxxx
Signed-off-by: Joel Stanley <joel@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/fsi/fsi-core.c b/drivers/fsi/fsi-core.c
index 4e60e84cd17a..59ddc9fd5bca 100644
--- a/drivers/fsi/fsi-core.c
+++ b/drivers/fsi/fsi-core.c
@@ -724,7 +724,7 @@ static ssize_t cfam_read(struct file *filep, char __user *buf, size_t count,
rc = count;
fail:
*offset = off;
- return count;
+ return rc;
}
static ssize_t cfam_write(struct file *filep, const char __user *buf,
@@ -761,7 +761,7 @@ static ssize_t cfam_write(struct file *filep, const char __user *buf,
rc = count;
fail:
*offset = off;
- return count;
+ return rc;
}
static loff_t cfam_llseek(struct file *file, loff_t offset, int whence)
