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authorRafael J. Wysocki <rjw@sisk.pl>2010-03-16 23:21:55 +0100
committerLen Brown <len.brown@intel.com>2010-03-23 00:22:49 -0400
commitbf02bd2590eb78d79ba1033d6df80c778b2f5ddf (patch)
tree41ce94e657e597845736f9140ad99aa1a9e1040d
parent7b1f513aacee53ed2d20cdf82191c7f486136469 (diff)
downloadop-kernel-dev-bf02bd2590eb78d79ba1033d6df80c778b2f5ddf.zip
op-kernel-dev-bf02bd2590eb78d79ba1033d6df80c778b2f5ddf.tar.gz
ACPI / ACPICA: Do not check reference counters in acpi_ev_enable_gpe()
acpi_ev_enable_gpe() should enable the GPE at the hardware level regardless of the value of the GPE's runtime reference counter. There are only two callers of acpi_ev_enable_gpe(), acpi_enable_gpe() and acpi_set_gpe(). The first one checks the GPE's runtime reference counter itself and only calls acpi_ev_enable_gpe() if it's equal to one, and the other one is supposed to enable the GPE unconditionally (if called with ACPI_GPE_ENABLE). This change fixes the problem in acpi_enable_wakeup_device() where the GPE will not be enabled for wakeup if it's runtime reference counter is zero, which is a regression from 2.6.33. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Reported-by: Robert Moore <robert.moore@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
-rw-r--r--drivers/acpi/acpica/evgpe.c19
1 files changed, 7 insertions, 12 deletions
diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c
index 837de66..78c5550 100644
--- a/drivers/acpi/acpica/evgpe.c
+++ b/drivers/acpi/acpica/evgpe.c
@@ -117,19 +117,14 @@ acpi_status acpi_ev_enable_gpe(struct acpi_gpe_event_info *gpe_event_info)
if (ACPI_FAILURE(status))
return_ACPI_STATUS(status);
- /* Mark wake-enabled or HW enable, or both */
-
- if (gpe_event_info->runtime_count) {
- /* Clear the GPE (of stale events), then enable it */
- status = acpi_hw_clear_gpe(gpe_event_info);
- if (ACPI_FAILURE(status))
- return_ACPI_STATUS(status);
-
- /* Enable the requested runtime GPE */
- status = acpi_hw_write_gpe_enable_reg(gpe_event_info);
- }
+ /* Clear the GPE (of stale events), then enable it */
+ status = acpi_hw_clear_gpe(gpe_event_info);
+ if (ACPI_FAILURE(status))
+ return_ACPI_STATUS(status);
- return_ACPI_STATUS(AE_OK);
+ /* Enable the requested GPE */
+ status = acpi_hw_write_gpe_enable_reg(gpe_event_info);
+ return_ACPI_STATUS(status);
}
/*******************************************************************************
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