tree f6ac6486e19690176af031300320271fc7054364
parent 121271f08809e5dc01d15d3e529988ac5d740af6
author Karen Dombroski <karen.dombroski@marsbioimaging.com> 1619674682 -0600
committer Mark Brown <broonie@kernel.org> 1619701566 +0100
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spi: spi-zynq-qspi: Fix stack violation bug

When the number of bytes for the op is greater than one, the read could
run off the end of the function stack and cause a crash.

This patch restores the behaviour of safely reading out of the original
opcode location.

Signed-off-by: Karen Dombroski <karen.dombroski@marsbioimaging.com>
Signed-off-by: Amit Kumar Mahapatra <amit.kumar-mahapatra@xilinx.com>
Link: https://lore.kernel.org/r/20210429053802.17650-3-amit.kumar-mahapatra@xilinx.com
Signed-off-by: Mark Brown <broonie@kernel.org>