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| author | Thomas Preston <thomas.preston@codethink.co.uk> | 2020-08-29 00:32:26 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-29 11:55:10 +0300 |
| commit | 556ce4cb01ebb3cab50b5e3ab5b2ccf3f2c2cdd3 (patch) | |
| tree | 030451821eb3d9e0845978e77464d7331f4aed95 /drivers/pinctrl | |
| parent | 0313dc6b78e5e466627b5992575b2154efd96bd2 (diff) | |
| download | linux-556ce4cb01ebb3cab50b5e3ab5b2ccf3f2c2cdd3.tar.xz | |
pinctrl: mcp23s08: Fix mcp23x17 precious range
[ Upstream commit b9b7fb29433b906635231d0a111224efa009198c ]
On page 23 of the datasheet [0] it says "The register remains unchanged
until the interrupt is cleared via a read of INTCAP or GPIO." Include
INTCAPA and INTCAPB registers in precious range, so that they aren't
accidentally cleared when we read via debugfs.
[0] https://ww1.microchip.com/downloads/en/DeviceDoc/20001952C.pdf
Fixes: 8f38910ba4f6 ("pinctrl: mcp23s08: switch to regmap caching")
Signed-off-by: Thomas Preston <thomas.preston@codethink.co.uk>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20200828213226.1734264-3-thomas.preston@codethink.co.uk
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/pinctrl')
| -rw-r--r-- | drivers/pinctrl/pinctrl-mcp23s08.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pinctrl/pinctrl-mcp23s08.c b/drivers/pinctrl/pinctrl-mcp23s08.c index 5f0cea13bb5c..5b5a4323ae63 100644 --- a/drivers/pinctrl/pinctrl-mcp23s08.c +++ b/drivers/pinctrl/pinctrl-mcp23s08.c @@ -142,7 +142,7 @@ static const struct regmap_access_table mcp23x17_volatile_table = { }; static const struct regmap_range mcp23x17_precious_range = { - .range_min = MCP_GPIO << 1, + .range_min = MCP_INTCAP << 1, .range_max = MCP_GPIO << 1, }; |