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Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpiolib.c6
-rw-r--r--drivers/gpio/mcp23s08.c2
-rw-r--r--drivers/gpio/pca953x.c1
3 files changed, 5 insertions, 4 deletions
diff --git a/drivers/gpio/gpiolib.c b/drivers/gpio/gpiolib.c
index 7f138c6195f..beaf6b3a37d 100644
--- a/drivers/gpio/gpiolib.c
+++ b/drivers/gpio/gpiolib.c
@@ -127,7 +127,7 @@ int __init gpiochip_reserve(int start, int ngpio)
unsigned long flags;
int i;
- if (!gpio_is_valid(start) || !gpio_is_valid(start + ngpio))
+ if (!gpio_is_valid(start) || !gpio_is_valid(start + ngpio - 1))
return -EINVAL;
spin_lock_irqsave(&gpio_lock, flags);
@@ -170,7 +170,7 @@ int gpiochip_add(struct gpio_chip *chip)
unsigned id;
int base = chip->base;
- if ((!gpio_is_valid(base) || !gpio_is_valid(base + chip->ngpio))
+ if ((!gpio_is_valid(base) || !gpio_is_valid(base + chip->ngpio - 1))
&& base >= 0) {
status = -EINVAL;
goto fail;
@@ -207,7 +207,7 @@ fail:
/* failures here can mean systems won't boot... */
if (status)
pr_err("gpiochip_add: gpios %d..%d (%s) not registered\n",
- chip->base, chip->base + chip->ngpio,
+ chip->base, chip->base + chip->ngpio - 1,
chip->label ? : "generic");
return status;
}
diff --git a/drivers/gpio/mcp23s08.c b/drivers/gpio/mcp23s08.c
index 7fb5b9d009d..7f92fdd5f0e 100644
--- a/drivers/gpio/mcp23s08.c
+++ b/drivers/gpio/mcp23s08.c
@@ -168,7 +168,7 @@ static void mcp23s08_dbg_show(struct seq_file *s, struct gpio_chip *chip)
{
struct mcp23s08 *mcp;
char bank;
- unsigned t;
+ int t;
unsigned mask;
mcp = container_of(chip, struct mcp23s08, chip);
diff --git a/drivers/gpio/pca953x.c b/drivers/gpio/pca953x.c
index 93f916720b1..7e40e8a55ed 100644
--- a/drivers/gpio/pca953x.c
+++ b/drivers/gpio/pca953x.c
@@ -30,6 +30,7 @@ static const struct i2c_device_id pca953x_id[] = {
{ "pca9537", 4, },
{ "pca9538", 8, },
{ "pca9539", 16, },
+ { "pca9554", 8, },
{ "pca9555", 16, },
{ "pca9557", 8, },
/* REVISIT several pca955x parts should work here too */