diff options
Diffstat (limited to 'drivers/soundwire/bus.c')
| -rw-r--r-- | drivers/soundwire/bus.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/drivers/soundwire/bus.c b/drivers/soundwire/bus.c index f66a804f9b74..d1e8c3a54976 100644 --- a/drivers/soundwire/bus.c +++ b/drivers/soundwire/bus.c @@ -1353,7 +1353,7 @@ static int sdw_handle_dp0_interrupt(struct sdw_slave *slave, u8 *slave_status) static int sdw_handle_port_interrupt(struct sdw_slave *slave, int port, u8 *slave_status) { - u8 clear = 0, impl_int_mask; + u8 clear, impl_int_mask; int status, status2, ret, count = 0; u32 addr; @@ -1370,6 +1370,8 @@ static int sdw_handle_port_interrupt(struct sdw_slave *slave, } do { + clear = status & ~SDW_DPN_INTERRUPTS; + if (status & SDW_DPN_INT_TEST_FAIL) { dev_err(&slave->dev, "Test fail for port:%d\n", port); clear |= SDW_DPN_INT_TEST_FAIL; @@ -1392,7 +1394,7 @@ static int sdw_handle_port_interrupt(struct sdw_slave *slave, *slave_status = clear; } - /* clear the interrupt */ + /* clear the interrupt but don't touch reserved fields */ ret = sdw_write(slave, addr, clear); if (ret < 0) { dev_err(slave->bus->dev, @@ -1413,7 +1415,7 @@ static int sdw_handle_port_interrupt(struct sdw_slave *slave, count++; /* we can get alerts while processing so keep retrying */ - } while (status != 0 && count < SDW_READ_INTR_CLEAR_RETRY); + } while ((status & SDW_DPN_INTERRUPTS) && (count < SDW_READ_INTR_CLEAR_RETRY)); if (count == SDW_READ_INTR_CLEAR_RETRY) dev_warn(slave->bus->dev, "Reached MAX_RETRY on port read"); |