diff mbox

ath9k: debug: Simplify error checking

Message ID 1507498152-4058-1-git-send-email-chris.gekas@gmail.com (mailing list archive)
State Changes Requested
Delegated to: Kalle Valo
Headers show

Commit Message

Christos Gkekas Oct. 8, 2017, 9:29 p.m. UTC
Variable val is unsigned so checking whether it is less than zero is
redundant.

Signed-off-by: Christos Gkekas <chris.gekas@gmail.com>
---
 drivers/net/wireless/ath/ath9k/debug.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

Comments

Kalle Valo Oct. 13, 2017, 12:49 p.m. UTC | #1
Christos Gkekas <chris.gekas@gmail.com> writes:

> Variable val is unsigned so checking whether it is less than zero is
> redundant.
>
> Signed-off-by: Christos Gkekas <chris.gekas@gmail.com>
> ---
>  drivers/net/wireless/ath/ath9k/debug.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
> index 01fa301..3b93c23 100644
> --- a/drivers/net/wireless/ath/ath9k/debug.c
> +++ b/drivers/net/wireless/ath/ath9k/debug.c
> @@ -1164,10 +1164,7 @@ static ssize_t write_file_tpc(struct file *file, const char __user *user_buf,
>  		return -EFAULT;
>  
>  	buf[len] = '\0';
> -	if (kstrtoul(buf, 0, &val))
> -		return -EINVAL;
> -
> -	if (val < 0 || val > 1)
> +	if (kstrtoul(buf, 0, &val) || val > 1)
>  		return -EINVAL;

Same as with the ath10k patch, please keep the two if statements
separate.
Christos Gkekas Oct. 14, 2017, 8:16 a.m. UTC | #2
On 13/10/17 15:49:15 +0300, Kalle Valo wrote:
> Christos Gkekas <chris.gekas@gmail.com> writes:
> 
> > Variable val is unsigned so checking whether it is less than zero is
> > redundant.
> >
> > Signed-off-by: Christos Gkekas <chris.gekas@gmail.com>
> > ---
> >  drivers/net/wireless/ath/ath9k/debug.c | 5 +----
> >  1 file changed, 1 insertion(+), 4 deletions(-)
> >
> > diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
> > index 01fa301..3b93c23 100644
> > --- a/drivers/net/wireless/ath/ath9k/debug.c
> > +++ b/drivers/net/wireless/ath/ath9k/debug.c
> > @@ -1164,10 +1164,7 @@ static ssize_t write_file_tpc(struct file *file, const char __user *user_buf,
> >  		return -EFAULT;
> >  
> >  	buf[len] = '\0';
> > -	if (kstrtoul(buf, 0, &val))
> > -		return -EINVAL;
> > -
> > -	if (val < 0 || val > 1)
> > +	if (kstrtoul(buf, 0, &val) || val > 1)
> >  		return -EINVAL;
> 
> Same as with the ath10k patch, please keep the two if statements
> separate.
> 
> -- 
> Kalle Valo

Thanks, will submit an new, updated patch.

Christos Gkekas
diff mbox

Patch

diff --git a/drivers/net/wireless/ath/ath9k/debug.c b/drivers/net/wireless/ath/ath9k/debug.c
index 01fa301..3b93c23 100644
--- a/drivers/net/wireless/ath/ath9k/debug.c
+++ b/drivers/net/wireless/ath/ath9k/debug.c
@@ -1164,10 +1164,7 @@  static ssize_t write_file_tpc(struct file *file, const char __user *user_buf,
 		return -EFAULT;
 
 	buf[len] = '\0';
-	if (kstrtoul(buf, 0, &val))
-		return -EINVAL;
-
-	if (val < 0 || val > 1)
+	if (kstrtoul(buf, 0, &val) || val > 1)
 		return -EINVAL;
 
 	tpc_enabled = !!val;