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te-remove&id=ea1b60fb085839a9544cb3a0069992991beabb7f'>ea1b60fb085839a9544cb3a0069992991beabb7f (diff)
spi: spi-ti-qspi: Handle truncated frames properly
We clamp frame_len_words to a maximum of 4096, but do not actually limit the number of words written or read through the DATA registers or the length added to spi_message::actual_length. This results in silent data corruption for commands longer than this maximum. Recalculate the length of each transfer, taking frame_len_words into account. Use this length in qspi_{read,write}_msg(), and to increment spi_message::actual_length. Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk> Signed-off-by: Mark Brown <broonie@kernel.org> Cc: stable@vger.kernel.org
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