linux-kernel - [PATCH 3.19.y-ckt 234/251] MIPS: Octeon: Set OHCI and EHCI MMIO byte order to match CPU

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Message-Id: <1437008972-9140-235-git-send-email-kamal@canonical.com>
Date:	Wed, 15 Jul 2015 18:09:15 -0700
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Ben Hutchings <ben@...adent.org.uk>,
	Alan Stern <stern@...land.harvard.edu>,
	linux-mips@...ux-mips.org, David Daney <david.daney@...ium.com>,
	Chandrakala Chavva <cchavva@...iumnetworks.com>,
	Paul Martin <paul.martin@...ethink.co.uk>,
	Ralf Baechle <ralf@...ux-mips.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 3.19.y-ckt 234/251] MIPS: Octeon: Set OHCI and EHCI MMIO byte order to match CPU

3.19.8-ckt4 -stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@...adent.org.uk>

commit df115f3ee9ea703e1209392cd08f8d6783244721 upstream.

The Octeon OHCI is now supported by the ohci-platform driver, and
USB_OCTEON_OHCI is marked as deprecated.  However, it is currently
still necessary to enable it in order to select
USB_OHCI_BIG_ENDIAN_MMIO.  Make CPU_CAVIUM_OCTEON select that as well,
so that USB_OCTEON_OHCI is really obsolete.

The old ohci-octeon and ehci-octeon drivers also only enabled big-endian
MMIO in case the CPU was big-endian.  Make the selections of
USB_EHCI_BIG_ENDIAN_MMIO and USB_OHCI_BIG_ENDIAN_MMIO conditional, to
match this.

Fixes: 2193dda5eec6 ("USB: host: Remove ehci-octeon and ohci-octeon drivers")
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Cc: Alan Stern <stern@...land.harvard.edu>
Cc: linux-mips@...ux-mips.org
Cc: David Daney <david.daney@...ium.com>
Cc: Chandrakala Chavva <cchavva@...iumnetworks.com>
Cc: Paul Martin <paul.martin@...ethink.co.uk>
Patchwork: https://patchwork.linux-mips.org/patch/10178/
Signed-off-by: Ralf Baechle <ralf@...ux-mips.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 arch/mips/Kconfig        | 3 ++-
 drivers/usb/host/Kconfig | 4 ++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 843713c..2a50476 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -1484,7 +1484,8 @@ config CPU_CAVIUM_OCTEON
 	select WEAK_ORDERING
 	select CPU_SUPPORTS_HIGHMEM
 	select CPU_SUPPORTS_HUGEPAGES
-	select USB_EHCI_BIG_ENDIAN_MMIO
+	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
+	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
 	select MIPS_L1_CACHE_SHIFT_7
 	help
 	  The Cavium Octeon processor is a highly integrated chip containing
diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
index fafc628..c87e6e7 100644
--- a/drivers/usb/host/Kconfig
+++ b/drivers/usb/host/Kconfig
@@ -295,7 +295,7 @@ config USB_OCTEON_EHCI
 	bool "Octeon on-chip EHCI support (DEPRECATED)"
 	depends on CAVIUM_OCTEON_SOC
 	default n
-	select USB_EHCI_BIG_ENDIAN_MMIO
+	select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
 	select USB_EHCI_HCD_PLATFORM
 	help
 	  This option is deprecated now and the driver was removed, use
@@ -582,7 +582,7 @@ config USB_OCTEON_OHCI
 	bool "Octeon on-chip OHCI support (DEPRECATED)"
 	depends on CAVIUM_OCTEON_SOC
 	default USB_OCTEON_EHCI
-	select USB_OHCI_BIG_ENDIAN_MMIO
+	select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
 	select USB_OHCI_LITTLE_ENDIAN
 	select USB_OHCI_HCD_PLATFORM
 	help
-- 
1.9.1

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