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ACPI / utils: Drop reference in test for device presence

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[ Upstream commit 54e3aca84e571559915998aa6cc05e5ac37c043b ]

When commit 8661423eea ("ACPI / utils: Add new acpi_dev_present
helper") introduced acpi_dev_present(), it missed the fact that
bus_find_device() took a reference on the device found by it and
the callers of acpi_dev_present() don't drop that reference.

Drop the reference on the device in acpi_dev_present().

Fixes: 8661423eea ("ACPI / utils: Add new acpi_dev_present helper")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andy Shevchenko 2019-03-18 21:47:09 +03:00 • committed by Greg Kroah-Hartman
parent 00059edd31
commit 19302c51c0
1 changed files with 1 additions and 0 deletions
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drivers/acpi/utils.c
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@ -800,6 +800,7 @@ bool acpi_dev_present(const char *hid, const char *uid, s64 hrv)
match.hrv = hrv;
dev = bus_find_device(&acpi_bus_type, NULL, &match, acpi_dev_match_cb);
put_device(dev);
return !!dev;
}
EXPORT_SYMBOL(acpi_dev_present);