staging: comedi: dmm32at: tidy up the irq support in dmm32at_attach()
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Tue, 26 Nov 2013 23:41:46 +0000 (16:41 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 3 Dec 2013 17:20:20 +0000 (09:20 -0800)
commit0c2e55324199d89aaea816ce7a76571c3f88d158
treee7eb1329a3a2c223ddec93347998788188905619
parent49220f916d9a90e468b60d9dd8fde789e239c632
staging: comedi: dmm32at: tidy up the irq support in dmm32at_attach()

An irq is only needed by this driver in order to support async commands.
Since it is optional, modify the attach so that if the request_irq() fails
the attach does not fail.

Remove the printk noise about the irq.

Only hookup the async command support if the request_irq() was successful.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/staging/comedi/drivers/dmm32at.c