diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.18/201-gpio_mvebu_fix_probe_cleanup_on_error.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.18/201-gpio_mvebu_fix_probe_cleanup_on_error.patch | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-3.18/201-gpio_mvebu_fix_probe_cleanup_on_error.patch b/target/linux/mvebu/patches-3.18/201-gpio_mvebu_fix_probe_cleanup_on_error.patch new file mode 100644 index 0000000..aeb884a --- /dev/null +++ b/target/linux/mvebu/patches-3.18/201-gpio_mvebu_fix_probe_cleanup_on_error.patch @@ -0,0 +1,63 @@ +Ensure that when there is an error during probe that the gpiochip is +removed and the generic irq chip is removed. + +Signed-off-by: Andrew Lunn <andrew@lunn.ch> +--- + drivers/gpio/gpio-mvebu.c | 23 +++++++++++++++++------ + 1 file changed, 17 insertions(+), 6 deletions(-) + +--- a/drivers/gpio/gpio-mvebu.c ++++ b/drivers/gpio/gpio-mvebu.c +@@ -675,6 +675,7 @@ static int mvebu_gpio_probe(struct platf + unsigned int ngpios; + int soc_variant; + int i, cpu, id; ++ int err; + + match = of_match_device(mvebu_gpio_of_match, &pdev->dev); + if (match) +@@ -793,14 +794,16 @@ static int mvebu_gpio_probe(struct platf + mvchip->irqbase = irq_alloc_descs(-1, 0, ngpios, -1); + if (mvchip->irqbase < 0) { + dev_err(&pdev->dev, "no irqs\n"); +- return mvchip->irqbase; ++ err = mvchip->irqbase; ++ goto err_gpiochip_add; + } + + gc = irq_alloc_generic_chip("mvebu_gpio_irq", 2, mvchip->irqbase, + mvchip->membase, handle_level_irq); + if (!gc) { + dev_err(&pdev->dev, "Cannot allocate generic irq_chip\n"); +- return -ENOMEM; ++ err = -ENOMEM; ++ goto err_gpiochip_add; + } + + gc->private = mvchip; +@@ -831,13 +834,21 @@ static int mvebu_gpio_probe(struct platf + if (!mvchip->domain) { + dev_err(&pdev->dev, "couldn't allocate irq domain %s (DT).\n", + mvchip->chip.label); +- irq_remove_generic_chip(gc, IRQ_MSK(ngpios), IRQ_NOREQUEST, +- IRQ_LEVEL | IRQ_NOPROBE); +- kfree(gc); +- return -ENODEV; ++ err = -ENODEV; ++ goto err_generic_chip; + } + + return 0; ++ ++err_generic_chip: ++ irq_remove_generic_chip(gc, IRQ_MSK(ngpios), IRQ_NOREQUEST, ++ IRQ_LEVEL | IRQ_NOPROBE); ++ kfree(gc); ++ ++err_gpiochip_add: ++ gpiochip_remove(&mvchip->chip); ++ ++ return err; + } + + static struct platform_driver mvebu_gpio_driver = { |