Merge remote-tracking branches 'regulator/fix/anatop', 'regulator/fix/gpio', 'regulat...

[firefly-linux-kernel-4.4.55.git] / drivers / gpio / gpio-mxc.c

diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 5e3235a73bf94b9462dc165cc799142decd937a0..b8dd847443c50750429a0d2a4b00407351490fd7 100644 (file)
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -339,13 +339,15 @@ static int gpio_set_wake_irq(struct irq_data *d, u32 enable)
        return 0;
 }
 
-static void mxc_gpio_init_gc(struct mxc_gpio_port *port, int irq_base)
+static int mxc_gpio_init_gc(struct mxc_gpio_port *port, int irq_base)
 {
        struct irq_chip_generic *gc;
        struct irq_chip_type *ct;
 
        gc = irq_alloc_generic_chip("gpio-mxc", 1, irq_base,
                                    port->base, handle_level_irq);
+       if (!gc)
+               return -ENOMEM;
        gc->private = port;
 
        ct = gc->chip_types;
@@ -360,6 +362,8 @@ static void mxc_gpio_init_gc(struct mxc_gpio_port *port, int irq_base)
 
        irq_setup_generic_chip(gc, IRQ_MSK(32), IRQ_GC_INIT_NESTED_LOCK,
                               IRQ_NOREQUEST, 0);
+
+       return 0;
 }
 
 static void mxc_gpio_get_hw(struct platform_device *pdev)
@@ -477,12 +481,16 @@ static int mxc_gpio_probe(struct platform_device *pdev)
        }
 
        /* gpio-mxc can be a generic irq chip */
-       mxc_gpio_init_gc(port, irq_base);
+       err = mxc_gpio_init_gc(port, irq_base);
+       if (err < 0)
+               goto out_irqdomain_remove;
 
        list_add_tail(&port->node, &mxc_gpio_ports);
 
        return 0;
 
+out_irqdomain_remove:
+       irq_domain_remove(port->domain);
 out_irqdesc_free:
        irq_free_descs(irq_base, 32);
 out_gpiochip_remove: