tree e1baec991889d8ad685003f99ac405faa38b0cc7
parent b89243dd0e6a1c96a4a346cb3e1ba2c637cdfe98
author Shawn Guo <shawn.guo@linaro.org> 1309421193 +0800
committer Vinod Koul <vinod.koul@intel.com> 1310599856 +0530

dmaengine: mxs-dma: skip request_irq for NO_IRQ

In general, the mxs-dma users get separate irq for each channel,
but gpmi is special one which has only one irq shared by all gpmi
channels.  It causes mxs_dma channel allocation function fail for
all other gpmi channels except the first one calling into the
function.

The patch gets request_irq call skipped for NO_IRQ case, and leaves
this gpmi specific quirk to gpmi driver to sort out.  It will fix
above problem if gpmi driver sets chan_irq as gpmi irq for only one
channel and NO_IRQ for all the rest channels.

Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Cc: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>