tree 4cc41c530f05591be9bb577923681b40a1591d6e
parent fd806575921ab78c8f0ee7f4dd3d4bb7c16206c8
author Chuanhong Guo <gch981213@gmail.com> 1600961250 +0800
committer Mark Brown <broonie@kernel.org> 1601591067 +0100
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spi: spi-mtk-nor: fix op checks in supports_op

commit a59b2c7c56bf7 ("spi: spi-mtk-nor: support standard spi properties")
tries to inverse the logic of supports_op when adding
spi_mem_default_supports_op check, but it didn't get it done properly.
There are two regressions introduced by this commit:
1. reading ops supported by program mode is rejected.
2. all ops with special controller routines are incorrectly further
   checked against program mode.

This commits inverses the logic back:
1. check spi_mem_default_supports_op and reject unsupported ops first.
2. return true for ops with special controller routines.
3. check the left ops against controller program mode.

Fixes: a59b2c7c56bf7 ("spi: spi-mtk-nor: support standard spi properties")
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Link: https://lore.kernel.org/r/20200924152730.733243-4-gch981213@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>