| commit | 88641c79c501735efe3b638ccad57ec077ed47f7 | [log] [tgz] |
|---|---|---|
| author | Ulrich Hecht <ulrich.hecht+renesas@gmail.com> | Thu Feb 02 18:10:15 2017 +0100 |
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | Fri Feb 03 10:14:10 2017 +0100 |
| tree | f6fcd9b7cc8720b8d750a02af45d498814bc5aea | |
| parent | 54e14ae2f3e82b327853e40afa9382a984a56742 [diff] |
serial: sh-sci: consider DR (data ready) bit adequately
To allow operation with a higher RX FIFO interrupt threshold in PIO
mode, it is necessary to consider the DR bit ("FIFO not full, but no
data received for 1.5 frames") as an indicator that data can be read.
Otherwise the driver will let data rot in the FIFO until the threshold
is reached.
Signed-off-by: Ulrich Hecht <ulrich.hecht+renesas@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>