diff options
Diffstat (limited to 'drivers/gpu/drm/xlnx/zynqmp_dp.c')
| -rw-r--r-- | drivers/gpu/drm/xlnx/zynqmp_dp.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/xlnx/zynqmp_dp.c b/drivers/gpu/drm/xlnx/zynqmp_dp.c index 5a3335e1fffa..9f48e5bbcdec 100644 --- a/drivers/gpu/drm/xlnx/zynqmp_dp.c +++ b/drivers/gpu/drm/xlnx/zynqmp_dp.c @@ -1627,7 +1627,14 @@ static irqreturn_t zynqmp_dp_irq_handler(int irq, void *data) /* clear status register as soon as we read it */ zynqmp_dp_write(dp, ZYNQMP_DP_INT_STATUS, status); mask = zynqmp_dp_read(dp, ZYNQMP_DP_INT_MASK); - if (!(status & ~mask)) + + /* + * Status register may report some events, which corresponding interrupts + * have been disabled. Filter out those events against interrupts' mask. + */ + status &= ~mask; + + if (!status) return IRQ_NONE; /* dbg for diagnostic, but not much that the driver can do */ |