diff options
Diffstat (limited to 'drivers/acpi/acpica/hwgpe.c')
| -rw-r--r-- | drivers/acpi/acpica/hwgpe.c | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c index 14750db2a1b..f610d88a66b 100644 --- a/drivers/acpi/acpica/hwgpe.c +++ b/drivers/acpi/acpica/hwgpe.c @@ -6,7 +6,7 @@ *****************************************************************************/ /* - * Copyright (C) 2000 - 2010, Intel Corp. + * Copyright (C) 2000 - 2011, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -62,10 +62,10 @@ acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, * PARAMETERS: gpe_event_info - Info block for the GPE * gpe_register_info - Info block for the GPE register * - * RETURN: Status + * RETURN: Register mask with a one in the GPE bit position * - * DESCRIPTION: Compute GPE enable mask with one bit corresponding to the given - * GPE set. + * DESCRIPTION: Compute the register mask for this GPE. One bit is set in the + * correct position for the input GPE. * ******************************************************************************/ @@ -85,12 +85,12 @@ u32 acpi_hw_get_gpe_register_bit(struct acpi_gpe_event_info *gpe_event_info, * * RETURN: Status * - * DESCRIPTION: Enable or disable a single GPE in its enable register. + * DESCRIPTION: Enable or disable a single GPE in the parent enable register. * ******************************************************************************/ acpi_status -acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 action) +acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u32 action) { struct acpi_gpe_register_info *gpe_register_info; acpi_status status; @@ -113,14 +113,20 @@ acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 action) return (status); } - /* Set ot clear just the bit that corresponds to this GPE */ + /* Set or clear just the bit that corresponds to this GPE */ register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info, gpe_register_info); switch (action) { - case ACPI_GPE_COND_ENABLE: - if (!(register_bit & gpe_register_info->enable_for_run)) + case ACPI_GPE_CONDITIONAL_ENABLE: + + /* Only enable if the enable_for_run bit is set */ + + if (!(register_bit & gpe_register_info->enable_for_run)) { return (AE_BAD_PARAMETER); + } + + /*lint -fallthrough */ case ACPI_GPE_ENABLE: ACPI_SET_BIT(enable_mask, register_bit); @@ -131,7 +137,7 @@ acpi_hw_low_set_gpe(struct acpi_gpe_event_info *gpe_event_info, u8 action) break; default: - ACPI_ERROR((AE_INFO, "Invalid action\n")); + ACPI_ERROR((AE_INFO, "Invalid GPE Action, %u\n", action)); return (AE_BAD_PARAMETER); } @@ -168,13 +174,13 @@ acpi_status acpi_hw_clear_gpe(struct acpi_gpe_event_info * gpe_event_info) return (AE_NOT_EXIST); } - register_bit = acpi_hw_get_gpe_register_bit(gpe_event_info, - gpe_register_info); - /* * Write a one to the appropriate bit in the status register to * clear this GPE. */ + register_bit = + acpi_hw_get_gpe_register_bit(gpe_event_info, gpe_register_info); + status = acpi_hw_write(register_bit, &gpe_register_info->status_address); @@ -201,8 +207,8 @@ acpi_hw_get_gpe_status(struct acpi_gpe_event_info * gpe_event_info, u32 in_byte; u32 register_bit; struct acpi_gpe_register_info *gpe_register_info; - acpi_status status; acpi_event_status local_event_status = 0; + acpi_status status; ACPI_FUNCTION_ENTRY(); |