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authorThomas Preston <thomas.preston@codethink.co.uk>2020-08-29 00:32:26 +0300
committerLinus Walleij <linus.walleij@linaro.org>2020-09-12 12:31:19 +0300
commitb9b7fb29433b906635231d0a111224efa009198c (patch)
treef6f9ef123f5efd954b979e3f643ab25f8bce25d0 /drivers/pinctrl/pinctrl-mcp23s08.c
parentb445f6237744df5e8d4f56f8733b2108c611220a (diff)
downloadlinux-b9b7fb29433b906635231d0a111224efa009198c.tar.xz
pinctrl: mcp23s08: Fix mcp23x17 precious range
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>
Diffstat (limited to 'drivers/pinctrl/pinctrl-mcp23s08.c')
-rw-r--r--drivers/pinctrl/pinctrl-mcp23s08.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/pinctrl/pinctrl-mcp23s08.c b/drivers/pinctrl/pinctrl-mcp23s08.c
index 3f5fed28557b..ce2d8014b7e0 100644
--- a/drivers/pinctrl/pinctrl-mcp23s08.c
+++ b/drivers/pinctrl/pinctrl-mcp23s08.c
@@ -109,7 +109,7 @@ 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,
};