37 lines
1.5 KiB
Diff
37 lines
1.5 KiB
Diff
In the ac.c, lack check return value of power_supply_register().
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This may casue that acpi driver's add() ops was called successful
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while the device may be failed to be initalized. For example, some
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ugly bios may describe two ACADs in the same dsdt. They use the same
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name which will cause the second ACAD device can no be registered.
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And then power_supply_register() failed. But acpi driver's add() ops
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is called sucessfully. The acpi device also will receive acpi notification
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and cause oops.
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https://bugzilla.redhat.com/show_bug.cgi?id=772730
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Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
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---
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drivers/acpi/ac.c | 4 +++-
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1 files changed, 3 insertions(+), 1 deletions(-)
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diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c
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index 6512b20..d1fcbc0 100644
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--- a/drivers/acpi/ac.c
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+++ b/drivers/acpi/ac.c
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@@ -292,7 +292,9 @@ static int acpi_ac_add(struct acpi_device *device)
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ac->charger.properties = ac_props;
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ac->charger.num_properties = ARRAY_SIZE(ac_props);
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ac->charger.get_property = get_ac_property;
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- power_supply_register(&ac->device->dev, &ac->charger);
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+ result = power_supply_register(&ac->device->dev, &ac->charger);
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+ if (result)
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+ goto end;
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printk(KERN_INFO PREFIX "%s [%s] (%s)\n",
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acpi_device_name(device), acpi_device_bid(device),
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--
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1.7.6.rc2.8.g28eb
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--
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