On Mon, 2019-07-29 at 13:03 +0100, Colin King wrote:
> From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
>
> The variable val is having the top 8 bits cleared and then the
> variable is being
> re-assinged and setting just the top 8 bits. I believe the intention
> was bitwise-or
> in the top 8 bits. Fix this by replacing the = operators with &= and
> |= instead.
>
> Addresses-Coverity: ("Unused value")
> Fixes: b0c74b08517e ("drivers: thermal: processor_thermal_device:
> Export sysfs inteface for TCC offset")
> Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
Reviewed-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
> ---
>
> V2: Add in &= operator missing from V1. Doh.
>
> ---
> .../thermal/intel/int340x_thermal/processor_thermal_device.c | 4
> ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
> index 6f6ac6a8e82d..97333fc4be42 100644
> ---
> a/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
> +++
> b/drivers/thermal/intel/int340x_thermal/processor_thermal_device.c
> @@ -163,8 +163,8 @@ static int tcc_offset_update(int tcc)
> if (err)
> return err;
>
> - val = ~GENMASK_ULL(31, 24);
> - val = (tcc & 0xff) << 24;
> + val &= ~GENMASK_ULL(31, 24);
> + val |= (tcc & 0xff) << 24;
>
> err = wrmsrl_safe(MSR_IA32_TEMPERATURE_TARGET, val);
> if (err)
