From: Guenter Roeck Date: Sat, 18 Aug 2012 16:29:22 +0000 (-0700) Subject: spi/mpc52xx: Fix device remove function X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~41^2~1^2~26 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f95e1028e3317a084af955aa0b1c25a6c9213869;p=pandora-kernel.git spi/mpc52xx: Fix device remove function The call sequence spi_alloc_master/spi_register_master/spi_unregister_master is complete; it reduces the device reference count to zero, which results in device memory being freed. An extra call to spi_master_put is unnecessary and results in an access to free memory. At the same time, since the call to spi_unregister_master results in device memory being freed, it must no longer be accessed afterwards. To fix both problems, call spi_master_get to get an extra reference to the device, and call spi_master_put only after the last access to device data. Signed-off-by: Guenter Roeck Signed-off-by: Mark Brown --- Reading git-diff-tree failed