diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-11 12:42:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-07-11 12:42:39 -0700 |
| commit | 8daf4ded903a2e6e18d650861b354e43a3f8bf88 (patch) | |
| tree | 0f3ba28ba1cbc02fa0b1ccedc81805e98317a739 | |
| parent | 3dc352c02fa73728531765b4ca0f671c1e3be171 (diff) | |
| parent | dc332fdf9f373a87b1e2f423b5b004b2a3c37e1a (diff) | |
Merge tag 'pm-for-3.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"This removes ACPICA code that had already been removed once from the
kernel already by commit 2780cc4660e1 ("[ACPI] Fix suspend/resume
lockup issue by leaving Bus Master Arbitration enabled"), because it
was known to cause systems to lock up during resume from suspend, but
was re-introduced by mistake during the v3.4 merge window."
* tag 'pm-for-3.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / PM: Leave Bus Master Arbitration enabled for suspend/resume
| -rw-r--r-- | drivers/acpi/acpica/hwsleep.c | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c index 0ed85cac323..615996a36be 100644 --- a/drivers/acpi/acpica/hwsleep.c +++ b/drivers/acpi/acpica/hwsleep.c @@ -95,18 +95,6 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state, u8 flags) return_ACPI_STATUS(status); } - if (sleep_state != ACPI_STATE_S5) { - /* - * Disable BM arbitration. This feature is contained within an - * optional register (PM2 Control), so ignore a BAD_ADDRESS - * exception. - */ - status = acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 1); - if (ACPI_FAILURE(status) && (status != AE_BAD_ADDRESS)) { - return_ACPI_STATUS(status); - } - } - /* * 1) Disable/Clear all GPEs * 2) Enable all wakeup GPEs @@ -364,16 +352,6 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state, u8 flags) [ACPI_EVENT_POWER_BUTTON]. status_register_id, ACPI_CLEAR_STATUS); - /* - * Enable BM arbitration. This feature is contained within an - * optional register (PM2 Control), so ignore a BAD_ADDRESS - * exception. - */ - status = acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 0); - if (ACPI_FAILURE(status) && (status != AE_BAD_ADDRESS)) { - return_ACPI_STATUS(status); - } - acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING); return_ACPI_STATUS(status); } |