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| author | Larisa Grigore <larisa.grigore@nxp.com> | 2025-05-22 15:51:30 +0100 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2025-05-22 16:05:24 +0100 |
| commit | 283ae0c65e9c592f4a1ba4f31917f5e766da7f31 (patch) | |
| tree | aed7a033e86b049f0cb75efee2c51f9149a436a0 /lib/test_fortify/write_overflow-strncpy-src.c | |
| parent | 1007ae0d464ceb55a3740634790521d3543aaab9 (diff) | |
spi: spi-fsl-dspi: restrict register range for regmap access
DSPI registers are NOT continuous, some registers are reserved and
accessing them from userspace will trigger external abort, add regmap
register access table to avoid below abort.
For example on S32G:
# cat /sys/kernel/debug/regmap/401d8000.spi/registers
Internal error: synchronous external abort: 96000210 1 PREEMPT SMP
...
Call trace:
regmap_mmio_read32le+0x24/0x48
regmap_mmio_read+0x48/0x70
_regmap_bus_reg_read+0x38/0x48
_regmap_read+0x68/0x1b0
regmap_read+0x50/0x78
regmap_read_debugfs+0x120/0x338
Fixes: 1acbdeb92c87 ("spi/fsl-dspi: Convert to use regmap and add big-endian support")
Co-developed-by: Xulin Sun <xulin.sun@windriver.com>
Signed-off-by: Xulin Sun <xulin.sun@windriver.com>
Signed-off-by: Larisa Grigore <larisa.grigore@nxp.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Link: https://patch.msgid.link/20250522-james-nxp-spi-v2-1-bea884630cfb@linaro.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'lib/test_fortify/write_overflow-strncpy-src.c')
0 files changed, 0 insertions, 0 deletions