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staging: comedi: dt3000: don't fail attach if irq is not available
authorH Hartley Sweeten <hsweeten@visionengravers.com>
Thu, 5 Dec 2013 20:43:37 +0000 (13:43 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 6 Dec 2013 21:07:16 +0000 (13:07 -0800)
The irq is only needed to support async commands. Don't fail the attach
if it is not available.

Only hook up the 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>

No differences found
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