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| author | Matthias Schiffer <[email protected]> | 2022-04-06 13:28:32 +0000 |
|---|---|---|
| committer | Mark Brown <[email protected]> | 2022-04-13 13:43:58 +0000 |
| commit | f1d388f216aeb41a5df518815ae559d14a6d438e (patch) | |
| tree | 4ea7ea27c0496898ad52b036432e172c66c951c1 /tools/perf/util/c++/clang.cpp | |
| parent | spi: intel: Add support for Raptor Lake-S SPI serial flash (diff) | |
| download | kernel-f1d388f216aeb41a5df518815ae559d14a6d438e.tar.gz kernel-f1d388f216aeb41a5df518815ae559d14a6d438e.zip | |
spi: cadence-quadspi: fix incorrect supports_op() return value
Since the conversion to spi-mem, the driver advertised support for
various operations that cqspi_set_protocol() was never expected to handle
correctly - in particuar all non-DTR operations with command or address
buswidth > 1. For DTR, all operations except for 8-8-8 would fail, as
cqspi_set_protocol() returns -EINVAL.
In non-DTR mode, this resulted in data corruption for SPI-NOR flashes that
support such operations. As a minimal fix that can be backported to stable
kernels, simply disallow the unsupported operations again to avoid this
issue.
Fixes: a314f6367787 ("mtd: spi-nor: Convert cadence-quadspi to use spi-mem framework")
Signed-off-by: Matthias Schiffer <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Mark Brown <[email protected]>
Diffstat (limited to 'tools/perf/util/c++/clang.cpp')
0 files changed, 0 insertions, 0 deletions