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| author | Peter Hurley <peter@hurleysoftware.com> | 2015-03-09 14:05:01 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-03-26 22:21:08 +0100 |
| commit | f01a0bd8921b9d6668d41fae3198970e6318f532 (patch) | |
| tree | 6ab966e61fa6ba9963d5442b8bc56b653603bbd8 /drivers/tty/serial/8250/8250_omap.c | |
| parent | 509cb7dc07cc03c28c7995a9213a605c04675a58 (diff) | |
| download | op-kernel-dev-f01a0bd8921b9d6668d41fae3198970e6318f532.zip op-kernel-dev-f01a0bd8921b9d6668d41fae3198970e6318f532.tar.gz | |
serial: 8250: Check UART_SCR is writable
Au1x00/RT2800+ doesn't implement the 8250 scratch register (and
this may be true of other h/w currently supported by the 8250 driver);
read back the canary value written to the scratch register to enable
the console h/w restart after resume from system suspend.
Fixes: 4516d50aabedb ("serial: 8250: Use canary to restart console ...")
Reported-by: Mason <slash.tmp@free.fr>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial/8250/8250_omap.c')
0 files changed, 0 insertions, 0 deletions
