aboutsummaryrefslogtreecommitdiffstats
path: root/drivers/spi/spi-pxa2xx.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/spi/spi-pxa2xx.c')
-rw-r--r--drivers/spi/spi-pxa2xx.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c
index 2eb06ee0b326..c1a50674c1e3 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)
546 if (pm_runtime_suspended(&drv_data->pdev->dev)) 546 if (pm_runtime_suspended(&drv_data->pdev->dev))
547 return IRQ_NONE; 547 return IRQ_NONE;
548 548
549 sccr1_reg = read_SSCR1(reg); 549 /*
550 * If the device is not yet in RPM suspended state and we get an
551 * interrupt that is meant for another device, check if status bits
552 * are all set to one. That means that the device is already
553 * powered off.
554 */
550 status = read_SSSR(reg); 555 status = read_SSSR(reg);
556 if (status == ~0)
557 return IRQ_NONE;
558
559 sccr1_reg = read_SSCR1(reg);
551 560
552 /* Ignore possible writes if we don't need to write */ 561 /* Ignore possible writes if we don't need to write */
553 if (!(sccr1_reg & SSCR1_TIE)) 562 if (!(sccr1_reg & SSCR1_TIE))