Commit d2a03c2f authored by Martin Schwidefsky's avatar Martin Schwidefsky Committed by Linus Torvalds

[PATCH] s390: chandev.

Remove channel device layer.
parent c7d8d8ce
...@@ -524,47 +524,8 @@ config FDDI ...@@ -524,47 +524,8 @@ config FDDI
comment "S/390 network device drivers" comment "S/390 network device drivers"
depends on NETDEVICES depends on NETDEVICES
config CHANDEV
bool "Channel Device Configuration"
depends on NETDEVICES
---help---
The channel device layer is a layer to provide a consistent
interface for configuration & default machine check (devices
appearing & disappearing) handling on Linux for s/390 & z/Series
channel devices.
s/390 & z/Series channel devices include among others
lcs (the most common ethernet/token ring/fddi standard on
zSeries)
ctc/escon hi speed like serial link standard on zSeries
claw used to talk to cisco routers.
qeth gigabit ethernet.
These devices use two channels one read & one write for
configuration & communication (& a third channel, the data
channel the case of gigabit ethernet). The motivation
behind developing this layer was that there was a lot of
duplicate code among the channel device drivers for
configuration.
Also the lcs & ctc drivers tended to fight over
3088/08's & 3088/1F's which could be either 2216/3172
channel attached lcs compatible devices or escon/ctc pipes
had to be configured separately as they couldn't autodetect,
this is now simplified by doing the configuration in a single
place (the channel device layer).
This layer isn't invasive & it is quite okay to use channel
drivers which don't use the channel device layer in
conjunction with drivers which do.
For more info see the chandev manpage usually distributed in
<file:Documentation/s390/chandev.8> in the Linux source tree.
config HOTPLUG config HOTPLUG
bool bool
depends on CHANDEV
default y default y
---help--- ---help---
Say Y here if you want to plug devices into your computer while Say Y here if you want to plug devices into your computer while
......
...@@ -2,7 +2,6 @@ ...@@ -2,7 +2,6 @@
# S/390 miscellaneous devices # S/390 miscellaneous devices
# #
obj-$(CONFIG_CHANDEV) += chandev.o # placeholder for stuff to come...
export-objs += chandev.o
include $(TOPDIR)/Rules.make include $(TOPDIR)/Rules.make
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