[PATCH] cpufreq: intel_pstate: Allow repeated intel_pstate disable

[Fabio M. De Francesco]

Repeated intel_pstate disables currently return an error, adding unnecessary
complexity to userspace scripts which must first read the current state and
conditionally write 'off'.

Make repeated intel_pstate disables a no-op.

Cc: Artem Bityutskiy <artem.bityutskiy@xxxxxxxxx>
Signed-off-by: Fabio M. De Francesco <fabio.m.de.francesco@xxxxxxxxxxxxxxx>
---
 drivers/cpufreq/intel_pstate.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/intel_pstate.c b/drivers/cpufreq/intel_pstate.c
index 1625ec2d0d06..d639cc150092 100644
--- a/drivers/cpufreq/intel_pstate.c
+++ b/drivers/cpufreq/intel_pstate.c
@@ -3470,7 +3470,7 @@ static int intel_pstate_update_status(const char *buf, size_t size)
 {
 	if (size == 3 && !strncmp(buf, "off", size)) {
 		if (!intel_pstate_driver)
-			return -EINVAL;
+			return 0;
 
 		if (hwp_active)
 			return -EBUSY;
-- 
2.53.0