[PATCH v2 08/15] ACPI: platform_profile: Require handlers to support balanced profile

[Mario Limonciello]

As support for multiple simultaneous platform handers is introduced it's
important they have at least the balanced profile in common.

This will be used as a fallback in case setting the profile across one of the
handlers happens to fail.

Tested-by: Matthew Schwartz <matthew.schwartz@xxxxxxxxx>
Suggested-by: Hans de Goede <hdegoede@xxxxxxxxxx>
Signed-off-by: Mario Limonciello <mario.limonciello@xxxxxxx>
---
 drivers/acpi/platform_profile.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c
index ede1550170f1a..c0d0775831214 100644
--- a/drivers/acpi/platform_profile.c
+++ b/drivers/acpi/platform_profile.c
@@ -190,9 +190,14 @@ int platform_profile_register(struct platform_profile_handler *pprof)
 {
 	int err;
 
-	/* Sanity check the profile handler field are set */
+	/* Sanity check the profile handler field are set and balanced is supported */
 	if (!pprof || bitmap_empty(pprof->choices, PLATFORM_PROFILE_LAST) ||
 		!pprof->profile_set || !pprof->profile_get) {
+		pr_err("platform_profile: handler is invalid\n");
+		return -EINVAL;
+	}
+	if (!test_bit(PLATFORM_PROFILE_BALANCED, pprof->choices)) {
+		pr_err("platform_profile: handler does not support balanced profile\n");
 		return -EINVAL;
 	}
 
-- 
2.43.0