On Tue, May 23, 2023 at 12:39 AM Srinivas Pandruvada
<srinivas.pandruvada@xxxxxxxxxxxxxxx> wrote:
>
> Prior to the commit:
> "763bd29fd3d1 ("thermal: int340x_thermal: Use sysfs_emit_at() instead of
> scnprintf()"
> there was a new line after each UUID string. With the newline removed,
> existing user space like "thermald" fails to compare each supported UUID
> as it is using getline() to read UUID and apply correct thermal table.
>
> To avoid breaking existing user space, add newline after each UUID string.
>
> Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
> Fixes: 763bd29fd3d1 ("thermal: int340x_thermal: Use sysfs_emit_at() instead of scnprintf()")
> Cc: stable@xxxxxxxxxxxxxxx # v6.3+
> ---
> drivers/thermal/intel/int340x_thermal/int3400_thermal.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> index 810231b59dcd..5e1164226ada 100644
> --- a/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> +++ b/drivers/thermal/intel/int340x_thermal/int3400_thermal.c
> @@ -131,7 +131,7 @@ static ssize_t available_uuids_show(struct device *dev,
>
> for (i = 0; i < INT3400_THERMAL_MAXIMUM_UUID; i++) {
> if (priv->uuid_bitmap & (1 << i))
> - length += sysfs_emit_at(buf, length, int3400_thermal_uuids[i]);
> + length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]);
> }
>
> return length;
> @@ -149,7 +149,7 @@ static ssize_t current_uuid_show(struct device *dev,
>
> for (i = 0; i <= INT3400_THERMAL_CRITICAL; i++) {
> if (priv->os_uuid_mask & BIT(i))
> - length += sysfs_emit_at(buf, length, int3400_thermal_uuids[i]);
> + length += sysfs_emit_at(buf, length, "%s\n", int3400_thermal_uuids[i]);
> }
>
> if (length)
> --
Applied as 6.4-rc material, thanks!
