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authorDaniel M. Weeks <dan@danweeks.net>2013-07-19 08:19:58 +0400
committerLinus Walleij <linus.walleij@linaro.org>2013-08-16 17:07:46 +0400
commit8a564065825cb92d412f107812ef50fe9ef43668 (patch)
tree9190a65f02945146c80fe78cb280e33ef19d814b /drivers/gpio/gpio-mcp23s08.c
parent8b628c659ce1e2a8714ebcfe55f80457a4ebe734 (diff)
downloadlinux-8a564065825cb92d412f107812ef50fe9ef43668.tar.xz
gpio-mcp23s08: i2c: auto-select base if no DT match or platform data
The call to gpiochip_add made by this driver is capable of auto-selecting a base if one is not provided. However, it was not called unless there was already a DT entry or platform data. This patch calls it even if the base is not already known so that gpiochip_add can attempt to find a usable base. Signed-off-by: Daniel M. Weeks <dan@danweeks.net> Acked-by: Lars Poeschel <poeschel@lemonage.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio/gpio-mcp23s08.c')
-rw-r--r--drivers/gpio/gpio-mcp23s08.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/gpio/gpio-mcp23s08.c b/drivers/gpio/gpio-mcp23s08.c
index 6a4470b84488..87ed6bf6528b 100644
--- a/drivers/gpio/gpio-mcp23s08.c
+++ b/drivers/gpio/gpio-mcp23s08.c
@@ -520,14 +520,13 @@ static int mcp230xx_probe(struct i2c_client *client,
match = of_match_device(of_match_ptr(mcp23s08_i2c_of_match),
&client->dev);
- if (match) {
+ pdata = client->dev.platform_data;
+ if (match || !pdata) {
base = -1;
pullups = 0;
} else {
- pdata = client->dev.platform_data;
- if (!pdata || !gpio_is_valid(pdata->base)) {
- dev_dbg(&client->dev,
- "invalid or missing platform data\n");
+ if (!gpio_is_valid(pdata->base)) {
+ dev_dbg(&client->dev, "invalid platform data\n");
return -EINVAL;
}
base = pdata->base;