On 17-05-2013 07:52, Andy Shevchenko wrote:
> Setting policy results in invalid value error.
> 	% echo "step_wise" > policy
> 	% echo: write error: Invalid argument
> 
> Need clean up of the buffer which "echo" may add based on the arguments, before
> comparing aganist list of governor names.
> 
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> Reported-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>

Acked-by: Eduardo Valentin <eduardo.valentin@ti.com>
Tested-by: Eduardo Valentin <eduardo.valentin@ti.com>

Tested on panda OMAP4430. As this is not platform dependent, I am fine
with the test I did.

> ---
> Since v2:
>  - fix typo in variable definition block
>  drivers/thermal/thermal_core.c | 6 +++++-
>  1 file changed, 5 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/thermal/thermal_core.c b/drivers/thermal/thermal_core.c
> index d755440..1067fb0 100644
> --- a/drivers/thermal/thermal_core.c
> +++ b/drivers/thermal/thermal_core.c
> @@ -33,6 +33,7 @@
>  #include <linux/idr.h>
>  #include <linux/thermal.h>
>  #include <linux/reboot.h>
> +#include <linux/string.h>
>  #include <net/netlink.h>
>  #include <net/genetlink.h>
>  
> @@ -713,10 +714,13 @@ policy_store(struct device *dev, struct device_attribute *attr,
>  	int ret = -EINVAL;
>  	struct thermal_zone_device *tz = to_thermal_zone(dev);
>  	struct thermal_governor *gov;
> +	char name[THERMAL_NAME_LENGTH];
> +
> +	snprintf(name, sizeof(name), "%s", buf);
>  
>  	mutex_lock(&thermal_governor_lock);
>  
> -	gov = __find_governor(buf);
> +	gov = __find_governor(strim(name));
>  	if (!gov)
>  		goto exit;
>  
>