dmaengine: at_hdmac: fix potential NULL pointer dereference in atc_prep_dma_interleaved

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[ Upstream commit 62a277d43d ]

_xt_ is being dereferenced before it is null checked, hence there is a
potential null pointer dereference.

Fix this by moving the pointer dereference after _xt_ has been null
checked.

This issue was detected with the help of Coccinelle.

Fixes: 4483320e24 ("dmaengine: Use Pointer xt after NULL check.")
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Gustavo A. R. Silva 2017-11-20 08:28:14 -06:00 • committed by Greg Kroah-Hartman

parent 27e2830b31

commit 05fc2b8ba0

1 changed files with 3 additions and 1 deletions

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drivers/dma/at_hdmac.c

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