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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)
127 unsigned long flags; 127 unsigned long flags;
128 int i; 128 int i;
129 129
130 if (!gpio_is_valid(start) || !gpio_is_valid(start + ngpio)) 130 if (!gpio_is_valid(start) || !gpio_is_valid(start + ngpio - 1))
131 return -EINVAL; 131 return -EINVAL;
132 132
133 spin_lock_irqsave(&gpio_lock, flags); 133 spin_lock_irqsave(&gpio_lock, flags);
@@ -170,7 +170,7 @@ int gpiochip_add(struct gpio_chip *chip)
170 unsigned id; 170 unsigned id;
171 int base = chip->base; 171 int base = chip->base;
172 172
173 if ((!gpio_is_valid(base) || !gpio_is_valid(base + chip->ngpio)) 173 if ((!gpio_is_valid(base) || !gpio_is_valid(base + chip->ngpio - 1))
174 && base >= 0) { 174 && base >= 0) {
175 status = -EINVAL; 175 status = -EINVAL;
176 goto fail; 176 goto fail;
@@ -207,7 +207,7 @@ fail:
207 /* failures here can mean systems won't boot... */ 207 /* failures here can mean systems won't boot... */
208 if (status) 208 if (status)
209 pr_err("gpiochip_add: gpios %d..%d (%s) not registered\n", 209 pr_err("gpiochip_add: gpios %d..%d (%s) not registered\n",
210 chip->base, chip->base + chip->ngpio, 210 chip->base, chip->base + chip->ngpio - 1,
211 chip->label ? : "generic"); 211 chip->label ? : "generic");
212 return status; 212 return status;
213} 213}
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)
168{ 168{
169 struct mcp23s08 *mcp; 169 struct mcp23s08 *mcp;
170 char bank; 170 char bank;
171 unsigned t; 171 int t;
172 unsigned mask; 172 unsigned mask;
173 173
174 mcp = container_of(chip, struct mcp23s08, chip); 174 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[] = {
30 { "pca9537", 4, }, 30 { "pca9537", 4, },
31 { "pca9538", 8, }, 31 { "pca9538", 8, },
32 { "pca9539", 16, }, 32 { "pca9539", 16, },
33 { "pca9554", 8, },
33 { "pca9555", 16, }, 34 { "pca9555", 16, },
34 { "pca9557", 8, }, 35 { "pca9557", 8, },
35 /* REVISIT several pca955x parts should work here too */ 36 /* REVISIT several pca955x parts should work here too */