Messages in this thread Patch in this message | | | From | Perry Yuan <> | Subject | [PATCH] ACPI: bus: Fix osc_sb_cppc_not_supported check | Date | Fri, 24 Jun 2022 07:59:40 -0400 |
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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 --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 -- 2.25.1
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