From: Scott Ellis <scott@jumpnowtek.com>
Date: Wed, 10 Mar 2010 21:22:45 +0000 (-0700)
Subject: spi/omap2_mcspi: fix NULL pointer dereference
X-Git-Tag: v2.6.34-rc2~12^2~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e7749436d576a525d7b2a4bcffb17b3364b9e00;p=pandora-kernel.git

spi/omap2_mcspi: fix NULL pointer dereference

Check spi->controller_state before dereferencing.

Shows up NULL here when using spi_alloc_device()/spi_add_device()
and spi_add_device() fails before spi_setup(). Calling spi_dev_put()
on the leftover spi_device results in the error.

Signed-off-by: Scott Ellis <scott@jumpnowtek.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
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