linux-kernel - [tip:x86/mm] s390/io: Add pci_iomap_wc() and pci_iomap_wc

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Message-ID: <tip-ee03c5868e74847ba0bd1e6dccbbe26e6504466d@git.kernel.org>
Date:	Thu, 27 Aug 2015 23:43:46 -0700
From:	"tip-bot for Luis R. Rodriguez" <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	toshi.kani@...com, hpa@...or.com, tomi.valkeinen@...com,
	peterz@...radead.org, fengguang.wu@...el.com,
	plagnioj@...osoft.com, akpm@...ux-foundation.org,
	frank.blaschka@...ibm.com, rostedt@...dmis.org, linux@...ck-us.net,
	mingo@...nel.org, mcgrof@...e.com, heiko.carstens@...ibm.com,
	treding@...dia.com, will.deacon@....com, schwidefsky@...ibm.com,
	torvalds@...ux-foundation.org, bp@...e.de, tglx@...utronix.de,
	linux-kernel@...r.kernel.org
Subject: [tip:x86/mm] s390/io: Add pci_iomap_wc() and pci_iomap_wc_range()

Commit-ID:  ee03c5868e74847ba0bd1e6dccbbe26e6504466d
Gitweb:     http://git.kernel.org/tip/ee03c5868e74847ba0bd1e6dccbbe26e6504466d
Author:     Luis R. Rodriguez <mcgrof@...e.com>
AuthorDate: Wed, 26 Aug 2015 16:34:10 -0700
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 28 Aug 2015 08:04:48 +0200

s390/io: Add pci_iomap_wc() and pci_iomap_wc_range()

The following commit:

  1b3d4200c1e0 ("PCI: Add pci_iomap_wc() variants")

Introduced pci_iomap_wc() variants but broke the s390 build,
because s390 requires its own implementation of pcio_iomap*()
calls.

The reason for that is that:

  "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"

so it has its own lookup/lock solution and 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.

Reported-by: kbuild test robot <fengguang.wu@...el.com>
Signed-off-by: Luis R. Rodriguez <mcgrof@...e.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Borislav Petkov <bp@...e.de>
Cc: Fengguang Wu <fengguang.wu@...el.com>
Cc: Frank Blaschka <frank.blaschka@...ibm.com>
Cc: Guenter Roeck <linux@...ck-us.net>
Cc: Heiko Carstens <heiko.carstens@...ibm.com>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Martin Schwidefsky <schwidefsky@...ibm.com>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Steven Rostedt <rostedt@...dmis.org>
Cc: Thierry Reding <treding@...dia.com>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Tomi Valkeinen <tomi.valkeinen@...com>
Cc: Toshi Kani <toshi.kani@...com>
Cc: Will Deacon <will.deacon@....com>
Cc: linux-fbdev@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Cc: linux-s390@...r.kernel.org
Cc: linux390@...ibm.com
Link: http://lkml.kernel.org/r/1440632050-23648-1-git-send-email-mcgrof@do-not-panic.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 arch/s390/include/asm/io.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h
index cb5fdf3..437e9af 100644
--- a/arch/s390/include/asm/io.h
+++ b/arch/s390/include/asm/io.h
@@ -57,6 +57,8 @@ static inline void ioport_unmap(void __iomem *p)
  */
 #define pci_iomap pci_iomap
 #define pci_iounmap pci_iounmap
+#define pci_iomap_wc pci_iomap
+#define pci_iomap_wc_range pci_iomap_range
 
 #define memcpy_fromio(dst, src, count)	zpci_memcpy_fromio(dst, src, count)
 #define memcpy_toio(dst, src, count)	zpci_memcpy_toio(dst, src, count)
--
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