[PATCH v2] pinctrl: mcp23s08: fix interrupt handling regression

[Dmitry Mastykin]

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 <pr...@electromag.com.au>
Signed-off-by: Dmitry Mastykin <masti...@gmail.com>
---
 drivers/pinctrl/pinctrl-mcp23s08.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pinctrl/pinctrl-mcp23s08.c 
b/drivers/pinctrl/pinctrl-mcp23s08.c
index 3e40d42..9c950bbf 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;
-- 
2.7.4