[PATCH][next] platform/x86: thinkpad_acpi: remove redundant assignment to variable i

[PATCH][next] platform/x86: thinkpad_acpi: remove redundant assignment to variable i

[Colin Ian King]

The variable i is being initialized with the value 0 that is never
read, it is being re-assigned 0 again in a for-loop statement later
on. The initialization is redundant and can be removed.

The initialization of variable n can also be deferred after the
sanity check on pointer n and the declaration of all the int variables
can be combined as a final code clear-up.

Cleans up clang scan build warning:
warning: Value stored to 'i' is never read [deadcode.DeadStores]

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
---
 drivers/platform/x86/thinkpad_acpi.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index c4895e9bc714..7bf91cfd3e51 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -6208,17 +6208,15 @@ static int thermal_get_sensor(int idx, s32 *value)
 
 static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
 {
-	int res, i;
-	int n;
-
-	n = 8;
-	i = 0;
+	int res, i, n;
 
 	if (!s)
 		return -EINVAL;
 
 	if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
 		n = 16;
+	else
+		n = 8;
 
 	for (i = 0 ; i < n; i++) {
 		res = thermal_get_sensor(i, &s->temp[i]);
-- 
2.39.2

Re: [PATCH][next] platform/x86: thinkpad_acpi: remove redundant assignment to variable i

[Hans de Goede]

Hi,

On 1/6/24 16:47, Colin Ian King wrote:
> The variable i is being initialized with the value 0 that is never
> read, it is being re-assigned 0 again in a for-loop statement later
> on. The initialization is redundant and can be removed.
> 
> The initialization of variable n can also be deferred after the
> sanity check on pointer n and the declaration of all the int variables
> can be combined as a final code clear-up.
> 
> Cleans up clang scan build warning:
> warning: Value stored to 'i' is never read [deadcode.DeadStores]
> 
> Signed-off-by: Colin Ian King <colin.i.king@gmail.com>

Thanks, patch looks good to me:

Reviewed-by: Hans de Goede <hdegoede@redhat.com>

Regards,

Hans



> ---
>  drivers/platform/x86/thinkpad_acpi.c | 8 +++-----
>  1 file changed, 3 insertions(+), 5 deletions(-)
> 
> diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
> index c4895e9bc714..7bf91cfd3e51 100644
> --- a/drivers/platform/x86/thinkpad_acpi.c
> +++ b/drivers/platform/x86/thinkpad_acpi.c
> @@ -6208,17 +6208,15 @@ static int thermal_get_sensor(int idx, s32 *value)
>  
>  static int thermal_get_sensors(struct ibm_thermal_sensors_struct *s)
>  {
> -	int res, i;
> -	int n;
> -
> -	n = 8;
> -	i = 0;
> +	int res, i, n;
>  
>  	if (!s)
>  		return -EINVAL;
>  
>  	if (thermal_read_mode == TPACPI_THERMAL_TPEC_16)
>  		n = 16;
> +	else
> +		n = 8;
>  
>  	for (i = 0 ; i < n; i++) {
>  		res = thermal_get_sensor(i, &s->temp[i]);

Re: [PATCH][next] platform/x86: thinkpad_acpi: remove redundant assignment to variable i

[Ilpo Järvinen]

On Sat, 06 Jan 2024 15:47:40 +0000, Colin Ian King wrote:

> The variable i is being initialized with the value 0 that is never
> read, it is being re-assigned 0 again in a for-loop statement later
> on. The initialization is redundant and can be removed.
> 
> The initialization of variable n can also be deferred after the
> sanity check on pointer n and the declaration of all the int variables
> can be combined as a final code clear-up.
> 
> [...]


Thank you for your contribution, it has been applied to my local
review-ilpo branch. Note it will show up in the public
platform-drivers-x86/review-ilpo branch only once I've pushed my
local branch there, which might take a while.

The list of commits applied:
[1/1] platform/x86: thinkpad_acpi: remove redundant assignment to variable i
      commit: 214509e5d61d294193b220f397418e76879f74c0

--
 i.