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spi: spi-ti-qspi: Fix return value handling of wait_for_completion_ti…
…meout [ Upstream commit 8b1ea69 ] wait_for_completion_timeout() returns unsigned long not int. It returns 0 if timed out, and positive if completed. The check for <= 0 is ambiguous and should be == 0 here indicating timeout which is the only error case. Fixes: 5720ec0 ("spi: spi-ti-qspi: Add DMA support for QSPI mmap read") Signed-off-by: Miaoqian Lin <linmq006@gmail.com> Link: https://lore.kernel.org/r/20220411111034.24447-1-linmq006@gmail.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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