On Wed, 28 Jul 2021 at 04:29, Bin Meng bmeng.cn@gmail.com wrote:
Since commit 43c145b8b3ee ("spi: ich: Correct max-size bug in ich_spi_adjust_size()") (in v2020.04-rc1), SPI flash read no longer works with ICH SPI controller in software sequencer mode.
ICH controller can only transfer a small number of bytes at once. Before commit 43c145b8b3ee, the logic happens to make sure data.nbytes is limited to slave->max_write_size but after commit 43c145b8b3ee data.nbytes is no longer limited because slave->max_read_size is not initialized with a valid number.
Fixes: 43c145b8b3ee ("spi: ich: Correct max-size bug in ich_spi_adjust_size()") Signed-off-by: Bin Meng bmeng.cn@gmail.com
drivers/spi/ich.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-)
Reviewed-by: Simon Glass sjg@chromium.org