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staging: comedi: call comedi_release_hardware_device() on error

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If `comedi_auto_config()` fails after allocating the minor device, call
`comedi_release_hardware_device()` instead of
`comedi_free_board_minor()` to free the minor device.  That's the same
call that `comedi_auto_unconfig()` uses, and is slightly safer as it
checks the minor device number is still tied to the same hardware
device.

Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ian Abbott
2013-04-04 14:58:48 +01:00
committed by Greg Kroah-Hartman
parent 3346b798f2
commit f5b31e15ac
1 changed files with 1 additions and 1 deletions
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2
drivers/staging/comedi/drivers.c
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@@ -452,7 +452,7 @@ int comedi_auto_config(struct device *hardware_device,
mutex_unlock(&comedi_dev->mutex);
if (ret < 0)
comedi_free_board_minor(minor);
comedi_release_hardware_device(hardware_device);
return ret;
}
EXPORT_SYMBOL_GPL(comedi_auto_config);