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| author | Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com> | 2016-04-27 11:40:10 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-30 19:26:55 +0300 |
| commit | fa01e2ca9f531b4a5693469a196eb1574b8d7d8a (patch) | |
| tree | 3f43beffb9efaeedcc35db48c1a5a010482bdfa6 /Documentation/serial | |
| parent | bd8d257fa3371a284568b8ee04c2bcf4757238ed (diff) | |
| download | linux-fa01e2ca9f531b4a5693469a196eb1574b8d7d8a.tar.xz | |
serial: 8250: Integrate Fintek into 8250_base
The 8250_fintek driver advertises as the PNP0501 driver; however this
conflicts with the standard 16550A uart PNP0501. The conflict causes
the 8250_fintek driver to load with _every_ PNP0501, but never probe,
and causing the entire 8250 driver stack to unload if the 8250_fintek
driver is unloaded (modprobe doesn't know that 8250_pnp rather than
8250_fintek claimed the resource).
This patch merges the Fintek driver into 8250_base. On autoconfig_16550
the device is probed to verify if it is a FINTEK device or not.
This custom probing can be disabled completely via configuration. When a
Fintek device is not probed it will behave as a standard 16550A device,
with no RS485 capabilities.
Reported-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>
Reviewed-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/serial')
0 files changed, 0 insertions, 0 deletions