diff mbox series

ACPI: bus: Fix osc_sb_cppc_not_supported check

Message ID 20220624115940.272422-1-Perry.Yuan@amd.com
State New
Headers show
Series ACPI: bus: Fix osc_sb_cppc_not_supported check | expand

Commit Message

Yuan, Perry June 24, 2022, 11:59 a.m. UTC 
The patch fixs the osc_sb_cppc_not_supported variable checking
Otherwise the cppc acpi driver will be failed to register causing AMD
pstate driver failed to load when calling acpi_cpc_valid()

Fixes: c42fa24b447("ACPI: bus: Avoid using CPPC if not supported by firmware")
Signed-off-by: Perry Yuan <Perry.Yuan@amd.com>
---
 drivers/acpi/bus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c
index 4d7c51a33b01..9731e4a1e338 100644
--- a/drivers/acpi/bus.c
+++ b/drivers/acpi/bus.c
@@ -359,7 +359,7 @@  static void acpi_bus_osc_negotiate_platform_control(void)
 	}
 
 #ifdef CONFIG_ACPI_CPPC_LIB
-	osc_sb_cppc_not_supported = !(capbuf_ret[OSC_SUPPORT_DWORD] &
+	osc_sb_cppc_not_supported = !(capbuf_ret[OSC_SUPPORT_DWORD] &&
 			(OSC_SB_CPC_SUPPORT | OSC_SB_CPCV2_SUPPORT));
 #endif