On Tue, Dec 16, 2014 at 01:31:26PM +0100, Wolfram Sang wrote: > From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> > > DMA is opt-in for this driver. So, we can't use deferred probing for > requesting DMA channels in probe, because our driver would get endlessly > deferred if DMA support is compiled in AND the DMA driver is missing. > Because we can't know when the DMA driver might show up, we always try > again when a DMA transfer would be possible. The downside is that there > is more overhead for setting up PIO transfers under the above scenario. > But well, having DMA enabled and the proper DMA driver missing looks > like a broken or test config anyhow. > > Reported-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx> > Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Applied to for-current, thanks!
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