On 08/27/2015 11:06 PM, Ingo Molnar wrote:

* Luis R. Rodriguez [off-list ref] wrote:

quoted

From: "Luis R. Rodriguez" <redacted>

S390 requires its own implementation of pcio_iomap*() calls
is because it has its "BAR spaces are not disjunctive on s390
so we need the bar parameter of pci_iomap to find the corresponding
device and create the mapping cookie" -- in summary, it has its own
lookup/lock solution.

It does not include asm-generic/pci_iomap.h

Since it currenty maps ioremap_wc() to ioremap_nocache() and that's
the architecture default we can easily just map the wc calls to
the default calls as well.

Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Jean-Christophe Plagniol-Villard <redacted>
Cc: Tomi Valkeinen <redacted>
Cc: linux-fbdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: Borislav Petkov <redacted>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Fengguang Wu <redacted>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Reported-by: 0 day bot
Signed-off-by: Luis R. Rodriguez <redacted>
---

This broke through some series that went into Ingo's tip tree which
I added. As such I *think* this should go through Ingo's tip tree.
Let me know. Up to you guys.

I fixed the changelog to explain all this.

Also, is there any other architecture that got broken by:

    1b3d4200c1e0 PCI: Add pci_iomap_wc() variants

Should be the only one. There are only two implementations of pci_iomap(),
one in s390 code and the generic implementation.

Guenter