diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-31 15:13:56 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-31 15:13:56 +0300 |
| commit | ca4572042e41a1aed2139ef66b0427c1f8d10179 (patch) | |
| tree | dbf87f04d11ebdee114ba8d210f193766fa5ecb7 | |
| parent | c5bce408e4b53e4498ac75c3c39eaf7ca9b7f296 (diff) | |
| parent | 8d8ee18cc707f498b6dad18915576f23b00bcff8 (diff) | |
| download | linux-ca4572042e41a1aed2139ef66b0427c1f8d10179.tar.xz | |
Merge tag 'gpio-v4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Here are two GPIO fixes for the v4.6 series, both in drivers:
- Prevent NULL dereference in the Xgene driver
- Fix an uninitialized spinlock in the menz127 driver"
* tag 'gpio-v4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: xgene: Prevent NULL pointer dereference
gpio: menz127: Drop lock field from struct men_z127_gpio
| -rw-r--r-- | drivers/gpio/gpio-menz127.c | 9 | ||||
| -rw-r--r-- | drivers/gpio/gpio-xgene.c | 5 |
2 files changed, 9 insertions, 5 deletions
diff --git a/drivers/gpio/gpio-menz127.c b/drivers/gpio/gpio-menz127.c index a68e199d579d..c5c9599a3a71 100644 --- a/drivers/gpio/gpio-menz127.c +++ b/drivers/gpio/gpio-menz127.c @@ -37,7 +37,6 @@ struct men_z127_gpio { void __iomem *reg_base; struct mcb_device *mdev; struct resource *mem; - spinlock_t lock; }; static int men_z127_debounce(struct gpio_chip *gc, unsigned gpio, @@ -69,7 +68,7 @@ static int men_z127_debounce(struct gpio_chip *gc, unsigned gpio, debounce /= 50; } - spin_lock(&priv->lock); + spin_lock(&gc->bgpio_lock); db_en = readl(priv->reg_base + MEN_Z127_DBER); @@ -84,7 +83,7 @@ static int men_z127_debounce(struct gpio_chip *gc, unsigned gpio, writel(db_en, priv->reg_base + MEN_Z127_DBER); writel(db_cnt, priv->reg_base + GPIO_TO_DBCNT_REG(gpio)); - spin_unlock(&priv->lock); + spin_unlock(&gc->bgpio_lock); return 0; } @@ -97,7 +96,7 @@ static int men_z127_request(struct gpio_chip *gc, unsigned gpio_pin) if (gpio_pin >= gc->ngpio) return -EINVAL; - spin_lock(&priv->lock); + spin_lock(&gc->bgpio_lock); od_en = readl(priv->reg_base + MEN_Z127_ODER); if (gpiochip_line_is_open_drain(gc, gpio_pin)) @@ -106,7 +105,7 @@ static int men_z127_request(struct gpio_chip *gc, unsigned gpio_pin) od_en &= ~BIT(gpio_pin); writel(od_en, priv->reg_base + MEN_Z127_ODER); - spin_unlock(&priv->lock); + spin_unlock(&gc->bgpio_lock); return 0; } diff --git a/drivers/gpio/gpio-xgene.c b/drivers/gpio/gpio-xgene.c index c0aa387664bf..0dc916191689 100644 --- a/drivers/gpio/gpio-xgene.c +++ b/drivers/gpio/gpio-xgene.c @@ -173,6 +173,11 @@ static int xgene_gpio_probe(struct platform_device *pdev) } res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + err = -EINVAL; + goto err; + } + gpio->base = devm_ioremap_nocache(&pdev->dev, res->start, resource_size(res)); if (!gpio->base) { |