diff mbox

hp_accel: Silence an uninitialized variable warning

Message ID 20160415144720.GF8953@mwanda (mailing list archive)
State Accepted, archived
Headers show

Commit Message

Dan Carpenter April 15, 2016, 2:47 p.m. UTC
If acpi_evaluate_integer() fails then "lret" isn't initialized.  I've
tweaked the error handling to avoid this issue.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

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Comments

Darren Hart April 15, 2016, 3:29 p.m. UTC | #1
On Fri, Apr 15, 2016 at 05:47:20PM +0300, Dan Carpenter wrote:
> If acpi_evaluate_integer() fails then "lret" isn't initialized.  I've
> tweaked the error handling to avoid this issue.
> 
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

Thanks Dan, I verified and queued all 3 patches to fixes for 4.6.

> 
> diff --git a/drivers/platform/x86/hp_accel.c b/drivers/platform/x86/hp_accel.c
> index 10ce6cb..746918e 100644
> --- a/drivers/platform/x86/hp_accel.c
> +++ b/drivers/platform/x86/hp_accel.c
> @@ -127,8 +127,10 @@ static int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret)
>  	arg0.integer.value = reg;
>  
>  	status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
> +	if (ACPI_FAILURE(status))
> +		return -EINVAL;
>  	*ret = lret;
> -	return (status != AE_OK) ? -EINVAL : 0;
> +	return 0;
>  }
>  
>  /**
>
diff mbox

Patch

diff --git a/drivers/platform/x86/hp_accel.c b/drivers/platform/x86/hp_accel.c
index 10ce6cb..746918e 100644
--- a/drivers/platform/x86/hp_accel.c
+++ b/drivers/platform/x86/hp_accel.c
@@ -127,8 +127,10 @@  static int lis3lv02d_acpi_read(struct lis3lv02d *lis3, int reg, u8 *ret)
 	arg0.integer.value = reg;
 
 	status = acpi_evaluate_integer(dev->handle, "ALRD", &args, &lret);
+	if (ACPI_FAILURE(status))
+		return -EINVAL;
 	*ret = lret;
-	return (status != AE_OK) ? -EINVAL : 0;
+	return 0;
 }
 
 /**