From: Jaehoon Chung <jh80.chung@samsung.com>
Date: Wed, 18 Apr 2012 06:42:31 +0000 (+0900)
Subject: mmc: dw_mmc: prevent NULL dereference for dma_ops
X-Git-Tag: v3.4-rc4~3^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e1631f989e0c6c8d9b43a2dbdd1097f70da603a5;p=pandora-kernel.git

mmc: dw_mmc: prevent NULL dereference for dma_ops

Now, dma_ops is assumed that use the IDMAC.  But if dma_ops is assigned
the pdata->dma_ops, we didn't ensure that callback function is defined.

If the callback isn't defined, then we should run in PIO mode.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Will Newton <will.newton@imgtec.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
---

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