From e28712c33886bf658352260bf7aa18653f8408a9 Mon Sep 17 00:00:00 2001 From: Keir Fraser Date: Wed, 3 Sep 2008 12:45:59 +0100 Subject: [PATCH] ACPI: Remove a redundant call to acpi_hw_register_read(). Signed-off-by: Wei Gang --- xen/drivers/acpi/hwregs.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/xen/drivers/acpi/hwregs.c b/xen/drivers/acpi/hwregs.c index 2fff2d5cf0..38423bc394 100644 --- a/xen/drivers/acpi/hwregs.c +++ b/xen/drivers/acpi/hwregs.c @@ -239,11 +239,13 @@ acpi_status acpi_set_register(u32 register_id, u32 value) case ACPI_REGISTER_PM2_CONTROL: +#if 0 /* Redundant read in original Linux code. */ status = acpi_hw_register_read(ACPI_REGISTER_PM2_CONTROL, ®ister_value); if (ACPI_FAILURE(status)) { goto unlock_and_exit; } +#endif ACPI_DEBUG_PRINT((ACPI_DB_IO, "PM2 control: Read %X from %8.8X%8.8X\n", -- 2.30.2