diff options
| author | Geert Uytterhoeven <geert+renesas@glider.be> | 2016-08-05 10:17:52 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-10-07 15:23:42 +0200 |
| commit | 0d5b1752c87c52d25484fea7ce7c24afadd8cd1c (patch) | |
| tree | 1751c0a513b0e5e68b482f79a16be6a6a870ed7b /tools/perf/scripts/python | |
| parent | 1229b0840b6a846d326630a6aaa5deaf04d10120 (diff) | |
spi: sh-msiof: Avoid invalid clock generator parameters
commit c3ccf357c3d75bd2924e049b6a991f7c0c111068 upstream.
The conversion from a look-up table to a calculation for clock generator
parameters forgot to take into account that BRDV x 1/1 is valid only if
BRPS is x 1/1 or x 1/2, leading to undefined behavior (e.g. arbitrary
clock rates).
This limitation is documented for the MSIOF module in all supported
SH/R-Mobile and R-Car Gen2/Gen3 ARM SoCs.
Tested on r8a7791/koelsch and r8a7795/salvator-x.
Fixes: 65d5665bb260b034 ("spi: sh-msiof: Update calculation of frequency dividing")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions