diff mbox series

[v1,15/17] thermal/drivers/acerhdf: Make interval setting only at module load time

Message ID 20230219143657.241542-16-daniel.lezcano@linaro.org
State New
Headers
Series Self-encapsulate the thermal zone device structure |

Commit Message

Daniel Lezcano Feb. 19, 2023, 2:36 p.m. UTC 
  The thermal zone device structure is in the process of being private
to the thermal framework core code. This driver is directly accessing
and changing the monitoring polling rate.

After discussing with the maintainers of this driver, having the
polling interval at module loading time is enough for their purpose.

Change the code to take into account the interval when the module is
loaded but restrict the permissions so the value can not be changed
afterwards.

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
---
 drivers/platform/x86/acerhdf.c | 12 +++---------
 1 file changed, 3 insertions(+), 9 deletions(-)

Comments

Peter Kästle Feb. 19, 2023, 9:38 p.m. UTC | #1 
19. Februar 2023 15:38, "Daniel Lezcano" <daniel.lezcano@linaro.org> schrieb:

> The thermal zone device structure is in the process of being private
> to the thermal framework core code. This driver is directly accessing
> and changing the monitoring polling rate.
> 
> After discussing with the maintainers of this driver, having the
> polling interval at module loading time is enough for their purpose.
> 
> Change the code to take into account the interval when the module is
> loaded but restrict the permissions so the value can not be changed
> afterwards.
> 
> Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>

Acked-by: Peter Kaestle <peter@piie.net>


> ---
> drivers/platform/x86/acerhdf.c | 12 +++---------
> 1 file changed, 3 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
> index 1956469c3457..61f1c3090867 100644
> --- a/drivers/platform/x86/acerhdf.c
> +++ b/drivers/platform/x86/acerhdf.c
> @@ -79,7 +79,6 @@ static unsigned int list_supported;
> static unsigned int fanstate = ACERHDF_FAN_AUTO;
> static char force_bios[16];
> static char force_product[16];
> -static unsigned int prev_interval;
> static struct thermal_zone_device *thz_dev;
> static struct thermal_cooling_device *cl_dev;
> static struct platform_device *acerhdf_dev;
> @@ -346,20 +345,15 @@ static void acerhdf_check_param(struct thermal_zone_device *thermal)
> trips[0].temperature = fanon;
> trips[0].hysteresis = fanon - fanoff;
> 
> - if (kernelmode && prev_interval != interval) {
> + if (kernelmode) {
> if (interval > ACERHDF_MAX_INTERVAL) {
> pr_err("interval too high, set to %d\n",
> ACERHDF_MAX_INTERVAL);
> interval = ACERHDF_MAX_INTERVAL;
> }
> +
> if (verbose)
> pr_notice("interval changed to: %d\n", interval);
> -
> - if (thermal)
> - thermal->polling_delay_jiffies =
> - round_jiffies(msecs_to_jiffies(interval * 1000));
> -
> - prev_interval = interval;
> }
> }
> 
> @@ -807,5 +801,5 @@ static const struct kernel_param_ops interval_ops = {
> .get = param_get_uint,
> };
> 
> -module_param_cb(interval, &interval_ops, &interval, 0600);
> +module_param_cb(interval, &interval_ops, &interval, 0000);
> MODULE_PARM_DESC(interval, "Polling interval of temperature check");
> -- 
> 2.34.1
diff mbox series

Patch

diff --git a/drivers/platform/x86/acerhdf.c b/drivers/platform/x86/acerhdf.c
index 1956469c3457..61f1c3090867 100644
--- a/drivers/platform/x86/acerhdf.c
+++ b/drivers/platform/x86/acerhdf.c
@@ -79,7 +79,6 @@  static unsigned int list_supported;
 static unsigned int fanstate = ACERHDF_FAN_AUTO;
 static char force_bios[16];
 static char force_product[16];
-static unsigned int prev_interval;
 static struct thermal_zone_device *thz_dev;
 static struct thermal_cooling_device *cl_dev;
 static struct platform_device *acerhdf_dev;
@@ -346,20 +345,15 @@  static void acerhdf_check_param(struct thermal_zone_device *thermal)
 	trips[0].temperature = fanon;
 	trips[0].hysteresis  = fanon - fanoff;
 
-	if (kernelmode && prev_interval != interval) {
+	if (kernelmode) {
 		if (interval > ACERHDF_MAX_INTERVAL) {
 			pr_err("interval too high, set to %d\n",
 			       ACERHDF_MAX_INTERVAL);
 			interval = ACERHDF_MAX_INTERVAL;
 		}
+
 		if (verbose)
 			pr_notice("interval changed to: %d\n", interval);
-
-		if (thermal)
-			thermal->polling_delay_jiffies =
-				round_jiffies(msecs_to_jiffies(interval * 1000));
-
-		prev_interval = interval;
 	}
 }
 
@@ -807,5 +801,5 @@  static const struct kernel_param_ops interval_ops = {
 	.get = param_get_uint,
 };
 
-module_param_cb(interval, &interval_ops, &interval, 0600);
+module_param_cb(interval, &interval_ops, &interval, 0000);
 MODULE_PARM_DESC(interval, "Polling interval of temperature check");