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pinctrl: mcp23s08: Fix mcp23x17 precious range
[ Upstream commitb9b7fb2943
] 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:8f38910ba4
("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>
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@ -144,7 +144,7 @@ static const struct regmap_access_table mcp23x17_volatile_table = {
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};
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static const struct regmap_range mcp23x17_precious_range = {
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.range_min = MCP_GPIO << 1,
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.range_min = MCP_INTCAP << 1,
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.range_max = MCP_GPIO << 1,
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};
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