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pinctrl: mcp23s08: fix interrupt handling regression

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interrupt handling was broken with conversion to using regmap caching.
cached_gpio value was updated by boolean status instead of gpio reading.

Fixes: 8f38910ba4 ("pinctrl: mcp23s08: switch to regmap caching")
Tested-by: Phil Reid <[email protected]>
Signed-off-by: Dmitry Mastykin <[email protected]>
Reviewed-by: Sebastian Reichel <[email protected]>
Signed-off-by: Linus Walleij <[email protected]>
This commit is contained in:
Dmitry Mastykin 2017-10-18 17:21:02 +03:00 • committed by Linus Walleij
commit 5986170107
1 changed files with 3 additions and 3 deletions
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6
drivers/pinctrl/pinctrl-mcp23s08.c
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@ -407,10 +407,10 @@ static int mcp23s08_get(struct gpio_chip *chip, unsigned offset)
ret = mcp_read(mcp, MCP_GPIO, &status);
if (ret < 0)
status = 0;
else
else {
mcp->cached_gpio = status;
status = !!(status & (1 << offset));
mcp->cached_gpio = status;
}
mutex_unlock(&mcp->lock);
return status;