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| author | Dmitry Mastykin <mastichi@gmail.com> | 2017-10-18 17:21:02 +0300 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2017-10-19 10:20:03 +0200 |
| commit | 59861701076b0cfac0b5eaa67a380fff6ab85b9e (patch) | |
| tree | 2e9f229c0748053a91a43a7c09a7efc07379baa1 /drivers/pinctrl/pinctrl-mcp23s08.c | |
| parent | 6afb10267c1692ada3a2903e31ea339917ad3ac0 (diff) | |
| download | linux-59861701076b0cfac0b5eaa67a380fff6ab85b9e.tar.gz linux-59861701076b0cfac0b5eaa67a380fff6ab85b9e.tar.bz2 linux-59861701076b0cfac0b5eaa67a380fff6ab85b9e.zip | |
pinctrl: mcp23s08: fix interrupt handling regression
interrupt handling was broken with conversion to using regmap caching.
cached_gpio value was updated by boolean status instead of gpio reading.
Fixes: 8f38910ba4f6 ("pinctrl: mcp23s08: switch to regmap caching")
Tested-by: Phil Reid <preid@electromag.com.au>
Signed-off-by: Dmitry Mastykin <mastichi@gmail.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/pinctrl-mcp23s08.c')
| -rw-r--r-- | drivers/pinctrl/pinctrl-mcp23s08.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/pinctrl/pinctrl-mcp23s08.c b/drivers/pinctrl/pinctrl-mcp23s08.c index 3e40d4245512..9c950bbf07ba 100644 --- a/drivers/pinctrl/pinctrl-mcp23s08.c +++ b/drivers/pinctrl/pinctrl-mcp23s08.c @@ -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; |