From: Axel Lin <axel.lin@ingics.com>
Date: Sat, 31 Aug 2013 11:42:56 +0000 (+0800)
Subject: spi: rspi: Add spi_master_get() call to prevent use after free
X-Git-Tag: v3.12-rc1~192^2~9^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9d3405dbbbd8418a095301d495da65bc3bc5f806;p=pandora-kernel.git

spi: rspi: Add spi_master_get() call to prevent use after free

In rspi_remove(), current code dereferences rspi after spi_unregister_master(),
thus add an extra spi_master_get() call is necessary to prevent use after free.

Current code already has an extra spi_master_put() call in rspi_remove(), so
this patch just adds a spi_master_get() call rather than a spi_master_get() with
spi_master_put() calls.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
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