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acpi: fix oops in acpi_system_wakeup_device_seq_show

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Commit 0794469da3: ("ACPI: struct device -
replace bus_id with dev_name(), dev_set_name()") introduced a bug by
testing 'dev_name(ldev)' instead of 'ldev->bus' for NULL when printing
out the bus information.

So if ldev->bus was NULL, we'd oops.

Reported-and-tested-by: Bruno Prmont <bonbons@linux-vserver.org>
Cc: Kay Sievers <kay.sievers@vrfy.org>
Cc: Len Brown <len.brown@intel.com>
Cc: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2008-11-16 10:09:34 -08:00
parent b42ccbc521
commit 77fb61a04a
1 changed files with 1 additions and 1 deletions
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2
drivers/acpi/sleep/proc.c
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@ -366,7 +366,7 @@ acpi_system_wakeup_device_seq_show(struct seq_file *seq, void *offset)
dev->wakeup.state.enabled ? "enabled" : "disabled");
if (ldev)
seq_printf(seq, "%s:%s",
dev_name(ldev) ? ldev->bus->name : "no-bus",
ldev->bus ? ldev->bus->name : "no-bus",
dev_name(ldev));
seq_printf(seq, "\n");
put_device(ldev);