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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2016-04-04 17:35:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-30 09:26:55 -0700 |
| commit | c42850f1ae7e70056f852e67bb9dddf927853b47 (patch) | |
| tree | 64c36c318b551d2af4adf692c804c1bbc091d3b0 /Documentation/serial | |
| parent | 107e15fc1f8d6ef69eac5f175971252f76e82f0d (diff) | |
| download | talos-obmc-linux-c42850f1ae7e70056f852e67bb9dddf927853b47.tar.gz talos-obmc-linux-c42850f1ae7e70056f852e67bb9dddf927853b47.zip | |
serial: 8250_mid: recognize interrupt source in handler
There is a special register that shows interrupt status by source. In
particular case the source can be a combination of DMA Tx, DMA Rx, and UART.
Read the register and call the handlers only for sources that request an
interrupt.
Fixes: 6ede6dcd87aa ("serial: 8250_mid: add support for DMA engine handling from UART MMIO")
Cc: stable@vger.kernel.org
Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/serial')
0 files changed, 0 insertions, 0 deletions
