Re: Regression: commit "ide: constify struct ide_port_info" causes breakage

[Sergei Shtylyov <sshtylyov@ru.mvista.com>]

Hello.

Russell King wrote:

> commit 8562043606430185cad26d085d46adcc7ad67fd1 is broken, causing:

>   CC      drivers/ide/pci/cmd64x.o
>   CC      drivers/ide/pci/hpt366.o
> drivers/ide/pci/hpt366.c:1428: error: hpt366_chipsets causes a section type conflict

> and therefore should be reverted.
> 
> The problem arises because hpt366 has other data marked with __devinitdata,
> so the compiler tries to define the initdata section with read-write
> attributes at one point, and read-only attributes when encountering the
> const-but-devinitdata declaration:
> 
> static struct hpt_info hpt36x __devinitdata = {
> static struct hpt_info hpt370 __devinitdata = {
> static struct hpt_info hpt370a __devinitdata = {
> ...
> static const struct ide_port_info hpt366_chipsets[] __devinitdata = {

> If we want ide_port_info to be read-only initdata, then we need
> __devroinitdata and __roinitdata tags.

    We can just convert cariables declared as 'struct hpt_info' to const too 
-- they are read-only templates.

MBR, Sergei