search for: acpi_bitreg_bus_master_rld

Displaying 1 result from an estimated 1 matches for "acpi_bitreg_bus_master_rld".

2013 Nov 11
1
[PATCH] x86/idle: reduce contention on ACPI register accesses
...i_set_register() is always being called once below. Newer + * chipsets handle DMA during C3 automatically and BM_RLD is a + * NOP. In either case, the proper way to handle BM_RLD is to + * set it and leave it set. */ - acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 1); } else { @@ -875,7 +872,13 @@ static int check_cx(struct acpi_processo " for C3 to be enabled on SMP systems\n")); return -EINVAL; } - acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 0); +...