From: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Date: Sat, 22 May 2010 08:18:02 +0000 (-0600)
Subject: spi/spi_mpc8xxx: fix potential memory corruption.
X-Git-Tag: v2.6.35-rc1~266^2~16
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f9218c2a60facc6ff9a793a9d9ab956194d70012;p=pandora-kernel.git

spi/spi_mpc8xxx: fix potential memory corruption.

tx_dma/rx_dma are already set to a dummy buffer when no
tx/rx buffer and t->tx_dma/t->rx_dma does not contain a dma
address, but NULL.
This may lead to corruption of kernel memory. Fix this by
leaving tx_dma/rx_dma alone.

Do not INIT_TX_RX while controller is enabled, this is bad according
to the MPC8321 manual.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Acked-by: Anton Vorontsov <cbouatmailru@gmail.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
---

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