diff options
| author | Herbert Xu <herbert@gondor.apana.org.au> | 2015-06-19 22:07:07 +0800 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2015-06-19 22:07:07 +0800 |
| commit | c0b59fafe31bf91f589736be304d739b13952fdd (patch) | |
| tree | 0088a41c6b68132739294643be06734e3af67677 /drivers/gpio/gpio-mb86s7x.c | |
| parent | 28bceeaaf81140d69647acd0eb7dc9312f27844a (diff) | |
| parent | bfa1ce5f38938cc9e6c7f2d1011f88eba2b9e2b2 (diff) | |
Merge branch 'mvebu/drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Merge the mvebu/drivers branch of the arm-soc tree which contains
just a single patch bfa1ce5f38938cc9e6c7f2d1011f88eba2b9e2b2 ("bus:
mvebu-mbus: add mv_mbus_dram_info_nooverlap()") that happens to be
a prerequisite of the new marvell/cesa crypto driver.
Diffstat (limited to 'drivers/gpio/gpio-mb86s7x.c')
| -rw-r--r-- | drivers/gpio/gpio-mb86s7x.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpio/gpio-mb86s7x.c b/drivers/gpio/gpio-mb86s7x.c index 21b1ce5abdfe..ee93c0ab0a59 100644 --- a/drivers/gpio/gpio-mb86s7x.c +++ b/drivers/gpio/gpio-mb86s7x.c @@ -58,6 +58,11 @@ static int mb86s70_gpio_request(struct gpio_chip *gc, unsigned gpio) spin_lock_irqsave(&gchip->lock, flags); val = readl(gchip->base + PFR(gpio)); + if (!(val & OFFSET(gpio))) { + spin_unlock_irqrestore(&gchip->lock, flags); + return -EINVAL; + } + val &= ~OFFSET(gpio); writel(val, gchip->base + PFR(gpio)); |