[PATCH 1/1] hidraw: Replace Confusing += Operator with =

[PATCH 1/1] hidraw: Replace Confusing += Operator with =

[Alan Ott]

Setting of the return value of hidraw_read() uses the += operator when
= is more appropriate.  There is no case where ret can be anything
other than zero when the assignment is made, making = equivalent to
+= and much more clear.

Signed-off-by: Alan Ott <alan@signal11.us>
---
 drivers/hid/hidraw.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
index 468e87b..66fbcba 100644
--- a/drivers/hid/hidraw.c
+++ b/drivers/hid/hidraw.c
@@ -91,7 +91,7 @@ static ssize_t hidraw_read(struct file *file, char __user *buffer, size_t count,
 			ret = -EFAULT;
 			goto out;
 		}
-		ret += len;
+		ret = len;
 
 		kfree(list->buffer[list->tail].value);
 		list->tail = (list->tail + 1) & (HIDRAW_BUFFER_SIZE - 1);
-- 
1.7.0.4

Re: [PATCH 1/1] hidraw: Replace Confusing += Operator with =

[Jiri Kosina]

On Wed, 26 Jan 2011, Alan Ott wrote:

> Setting of the return value of hidraw_read() uses the += operator when
> = is more appropriate.  There is no case where ret can be anything
> other than zero when the assignment is made, making = equivalent to
> += and much more clear.
> 
> Signed-off-by: Alan Ott <alan@signal11.us>
> ---
>  drivers/hid/hidraw.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/hid/hidraw.c b/drivers/hid/hidraw.c
> index 468e87b..66fbcba 100644
> --- a/drivers/hid/hidraw.c
> +++ b/drivers/hid/hidraw.c
> @@ -91,7 +91,7 @@ static ssize_t hidraw_read(struct file *file, char __user *buffer, size_t count,
>  			ret = -EFAULT;
>  			goto out;
>  		}
> -		ret += len;
> +		ret = len;
>  

Applied, thanks.

-- 
Jiri Kosina
SUSE Labs, Novell Inc.