[PATCH v2] spi: bcm2835: Add spi_master_get() call to prevent use after free

[Mark Brown]

On Thu, Aug 22, 2013 at 11:19:07PM +0800, Axel Lin wrote:
> The call to spi_unregister_master results in device memory being freed, it must
> no longer be accessed afterwards. Thus 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.

Applied, thanks.
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