diff options
author | jkim <jkim@FreeBSD.org> | 2012-06-27 16:15:13 +0000 |
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committer | jkim <jkim@FreeBSD.org> | 2012-06-27 16:15:13 +0000 |
commit | c42e49e4075ff907204f33fd48335013156105f9 (patch) | |
tree | caba53e1a2d20f91e89900e7af6adf9472712395 /sys/contrib/dev | |
parent | 86ceb1784ac9f200299c75edb4e024b8f22df052 (diff) | |
download | FreeBSD-src-c42e49e4075ff907204f33fd48335013156105f9.zip FreeBSD-src-c42e49e4075ff907204f33fd48335013156105f9.tar.gz |
MFV: r237650
Do not malloc(9) while holding a spin lock, to avoid panic.
Reported by: kib (and many others)
Tested by: kib (and many others)
Diffstat (limited to 'sys/contrib/dev')
-rw-r--r-- | sys/contrib/dev/acpica/components/events/evxfgpe.c | 26 |
1 files changed, 15 insertions, 11 deletions
diff --git a/sys/contrib/dev/acpica/components/events/evxfgpe.c b/sys/contrib/dev/acpica/components/events/evxfgpe.c index 8f24902..3a43733 100644 --- a/sys/contrib/dev/acpica/components/events/evxfgpe.c +++ b/sys/contrib/dev/acpica/components/events/evxfgpe.c @@ -298,7 +298,7 @@ AcpiSetupGpeForWake ( ACPI_STATUS Status; ACPI_GPE_EVENT_INFO *GpeEventInfo; ACPI_NAMESPACE_NODE *DeviceNode; - ACPI_GPE_NOTIFY_INFO *Notify; + ACPI_GPE_NOTIFY_INFO *NewNotify, *Notify; ACPI_CPU_FLAGS Flags; @@ -334,6 +334,12 @@ AcpiSetupGpeForWake ( return_ACPI_STATUS (AE_BAD_PARAMETER); } + NewNotify = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_NOTIFY_INFO)); + if (!NewNotify) + { + return_ACPI_STATUS (AE_NO_MEMORY); + } + Flags = AcpiOsAcquireLock (AcpiGbl_GpeLock); /* Ensure that we have a valid GPE number */ @@ -384,16 +390,10 @@ AcpiSetupGpeForWake ( /* Add this device to the notify list for this GPE */ - Notify = ACPI_ALLOCATE_ZEROED (sizeof (ACPI_GPE_NOTIFY_INFO)); - if (!Notify) - { - Status = AE_NO_MEMORY; - goto UnlockAndExit; - } - - Notify->DeviceNode = DeviceNode; - Notify->Next = GpeEventInfo->Dispatch.NotifyList; - GpeEventInfo->Dispatch.NotifyList = Notify; + NewNotify->DeviceNode = DeviceNode; + NewNotify->Next = GpeEventInfo->Dispatch.NotifyList; + GpeEventInfo->Dispatch.NotifyList = NewNotify; + NewNotify = NULL; } /* Mark the GPE as a possible wake event */ @@ -403,6 +403,10 @@ AcpiSetupGpeForWake ( UnlockAndExit: AcpiOsReleaseLock (AcpiGbl_GpeLock, Flags); + if (NewNotify) + { + ACPI_FREE (NewNotify); + } return_ACPI_STATUS (Status); } |