Re: [RFT 00/13] iomap: Constify ioreadX() iomem argument

From
Krzysztof Kozlowski <krzk@kernel.org>
Date
2020-01-08 08:16:10
Also in
dri-devel, linux-alpha, linux-arch, nouveau
Reply to
Geert Uytterhoeven, 2020-01-08
On Wed, 8 Jan 2020 at 09:08, Geert Uytterhoeven [off-list ref] wrote:
Hi Krzysztof,

On Tue, Jan 7, 2020 at 5:53 PM Krzysztof Kozlowski [off-list ref] wrote:
quoted
The ioread8/16/32() and others have inconsistent interface among the
architectures: some taking address as const, some not.

It seems there is nothing really stopping all of them to take
pointer to const.
Shouldn't all of them take const volatile __iomem pointers?
It seems the "volatile" is missing from all but the implementations in
include/asm-generic/io.h.
It's kind of separate issue although I could squash it to limit
redundant changes.
quoted
Patchset was really tested on all affected architectures.
I just spot an error in my first message. I wanted to say:
"Patchset was NOT really tested on all affected architectures."

Obviously.

quoted
Build testing is in progress - I hope auto-builders will point any issues.


Todo
====
Convert also string versions (ioread16_rep() etc) if this aproach looks OK.


Merging
=======
The first 5 patches - iomap, alpha, sh, parisc and powerpc - should probably go
via one tree, or even squashed into one.
Yes, they should be squashed, cfr. Arnd's comment.
I also wouldn't bother doing the updates in patches 6-10.
Indeed, thanks for comments.

Best regards,
Krzysztof
Thread (31 messages) 31 messages, 5 authors, last reply 2020-01-09
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