diff options
| author | Gleb Natapov <gleb@redhat.com> | 2013-10-17 17:04:47 +0300 |
|---|---|---|
| committer | Gleb Natapov <gleb@redhat.com> | 2013-10-17 17:41:49 +0300 |
| commit | 13acfd5715144518232d8e29acf7c76ef1b089d8 (patch) | |
| tree | 093c4311a737210bbdd3d1919f8193cb5f017241 /drivers/spi/spi-pxa2xx.c | |
| parent | d570142674890fe10b3d7d86aa105e3dfce1ddfa (diff) | |
| parent | 34ec4de42be5006abdd8d0c08b306ffaa64d0d5d (diff) | |
Powerpc KVM work is based on a commit after rc4.
Merging master into next to satisfy the dependencies.
Conflicts:
arch/arm/kvm/reset.c
Diffstat (limited to 'drivers/spi/spi-pxa2xx.c')
| -rw-r--r-- | drivers/spi/spi-pxa2xx.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 2eb06ee0b32..c1a50674c1e 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -546,8 +546,17 @@ static irqreturn_t ssp_int(int irq, void *dev_id) if (pm_runtime_suspended(&drv_data->pdev->dev)) return IRQ_NONE; - sccr1_reg = read_SSCR1(reg); + /* + * If the device is not yet in RPM suspended state and we get an + * interrupt that is meant for another device, check if status bits + * are all set to one. That means that the device is already + * powered off. + */ status = read_SSSR(reg); + if (status == ~0) + return IRQ_NONE; + + sccr1_reg = read_SSCR1(reg); /* Ignore possible writes if we don't need to write */ if (!(sccr1_reg & SSCR1_TIE)) |