diff options
| author | Sergey Yanovich <[email protected]> | 2016-09-27 18:23:16 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2016-10-27 16:03:09 +0200 |
| commit | ab28f51c77cd46189aa5726c98d5153052567a3c (patch) | |
| tree | 643562e7db907aa2e4685f15c861b9d785604da6 /lib/syscall.c | |
| parent | 07d9a380680d1c0eb51ef87ff2eab5c994949e69 (diff) | |
serial: rewrite pxa2xx-uart to use 8250_core
pxa2xx-uart was a separate uart platform driver. It was declaring
the same device names and numbers as 8250 driver. As a result,
it was impossible to use 8250 driver on PXA SoCs.
Upon closer examination pxa2xx-uart turned out to be a clone of
8250_core driver.
Workaround for Erratum #19 according to Marvel(R) PXA270M Processor
Specification Update (April 19, 2010) is dropped. 8250_core reads
from FIFO immediately after checking DR bit in LSR.
The patch leaves the original SERIAL_PXA driver around. The original
driver is just marked DEPRECATED in Kconfig and C source. When
the original driver is considered safe to remove, no changes
to SERIAL_8250 will be necessary.
Compiling SERIAL_8250_CONSOLE and SERIAL_PXA_CONSOLE even without
SERIAL_8250_PXA breaks console for SERIAL_PXA. For this reasons, the new
and the original drivers are made mutually exclusive.
Signed-off-by: Sergei Ianovich <[email protected]>
CC: Heikki Krogerus <[email protected]>
CC: James Cameron <[email protected]>
CC: Robert Jarzmik <[email protected]>
CC: Russell King <[email protected]>
Reviewed-by: Heikki Krogerus <[email protected]>
[rebased on v4.8]
Tested-by: Robert Jarzmik <[email protected]>
Signed-off-by: Robert Jarzmik <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'lib/syscall.c')
0 files changed, 0 insertions, 0 deletions