Re: [PATCH] netdev: mv643xx_eth: Prevent build on PPC32

On Tue, Jun 05, 2012 at 10:40:14PM -0400, Josh Boyer wrote:

quoted

quoted

Commit 452503ebc (ARM: Orion: Eth: Add clk/clkdev support.) added use of
the clk driver API which results in compile errors on architectures that
don't implement the clk API.

ERROR: "clk_enable" [drivers/net/ethernet/marvell/mv643xx_eth.ko] undefined!
ERROR: "clk_disable" [drivers/net/ethernet/marvell/mv643xx_eth.ko] undefined!
ERROR: "clk_put" [drivers/net/ethernet/marvell/mv643xx_eth.ko] undefined!
ERROR: "clk_get_rate" [drivers/net/ethernet/marvell/mv643xx_eth.ko] undefined!
ERROR: "clk_get" [drivers/net/ethernet/marvell/mv643xx_eth.ko] undefined!

Selecting CLKDEV_LOOKUP doesn't fix this either, as the build then fails with:

In file included from drivers/clk/clkdev.c:21:0:
include/linux/clkdev.h:15:24: fatal error: asm/clkdev.h: No such file or directory

So we just prevent this from building at all on PPC32.

If the PPC32 dependency is no longer relevant (e.g. if Pegasos platform
support was removed from the kernel), then the commit message should
mention that -- the above reasoning is a poor sole justification for
this change.

You are correct.  As it stands, it's no better than just breaking it
outright with commit 452503ebc.

ACK.  If I'd have seen that commit ("ARM: Orion: Eth: Add clk/clkdev
support.") come by I would have said something about it, but noone
bothered to CC me on it -- and it doesn't seem that it was CCed to
netdev@ either...?