Commit Graph

707112 Commits

Author SHA1 Message Date
Maciej W. Rozycki
547da67317 MIPS: Fix an n32 core file generation regset support regression
Fix a commit 7aeb753b53 ("MIPS: Implement task_user_regset_view.")
regression, then activated by commit 6a9c001b7e ("MIPS: Switch ELF
core dumper to use regsets.)", that caused n32 processes to dump o32
core files by failing to set the EF_MIPS_ABI2 flag in the ELF core file
header's `e_flags' member:

$ file tls-core
tls-core: ELF 32-bit MSB executable, MIPS, N32 MIPS64 rel2 version 1 (SYSV), [...]
$ ./tls-core
Aborted (core dumped)
$ file core
core: ELF 32-bit MSB core file MIPS, MIPS-I version 1 (SYSV), SVR4-style
$

Previously the flag was set as the result of a:

statement placed in arch/mips/kernel/binfmt_elfn32.c, however in the
regset case, i.e. when CORE_DUMP_USE_REGSET is set, ELF_CORE_EFLAGS is
no longer used by `fill_note_info' in fs/binfmt_elf.c, and instead the
`->e_flags' member of the regset view chosen is.  We have the views
defined in arch/mips/kernel/ptrace.c, however only an o32 and an n64
one, and the latter is used for n32 as well.  Consequently an o32 core
file is incorrectly dumped from n32 processes (the ELF32 vs ELF64 class
is chosen elsewhere, and the 32-bit one is correctly selected for n32).

Correct the issue then by defining an n32 regset view and using it as
appropriate.  Issue discovered in GDB testing.

Fixes: 7aeb753b53 ("MIPS: Implement task_user_regset_view.")
Signed-off-by: Maciej W. Rozycki <macro@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Djordje Todorovic <djordje.todorovic@rt-rk.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.13+
Patchwork: https://patchwork.linux-mips.org/patch/17617/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-09 15:04:57 +00:00
James Hogan
22b8ba765a MIPS: Fix MIPS64 FP save/restore on 32-bit kernels
32-bit kernels can be configured to support MIPS64, in which case
neither CONFIG_64BIT or CONFIG_CPU_MIPS32_R* will be set. This causes
the CP0_Status.FR checks at the point of floating point register save
and restore to be compiled out, which results in odd FP registers not
being saved or restored to the task or signal context even when
CP0_Status.FR is set.

Fix the ifdefs to use CONFIG_CPU_MIPSR2 and CONFIG_CPU_MIPSR6, which are
enabled for the relevant revisions of either MIPS32 or MIPS64, along
with some other CPUs such as Octeon (r2), Loongson1 (r2), XLP (r2),
Loongson 3A R2.

The suspect code originates from commit 597ce1723e ("MIPS: Support for
64-bit FP with O32 binaries") in v3.14, however the code in
__enable_fpu() was consistent and refused to set FR=1, falling back to
software FPU emulation. This was suboptimal but should be functionally
correct.

Commit fcc53b5f6c ("MIPS: fpu.h: Allow 64-bit FPU on a 64-bit MIPS R6
CPU") in v4.2 (and stable tagged back to 4.0) later introduced the bug
by updating __enable_fpu() to set FR=1 but failing to update the other
similar ifdefs to enable FR=1 state handling.

Fixes: fcc53b5f6c ("MIPS: fpu.h: Allow 64-bit FPU on a 64-bit MIPS R6 CPU")
Signed-off-by: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.0+
Patchwork: https://patchwork.linux-mips.org/patch/16739/
2017-11-09 14:13:40 +00:00
Florian Fainelli
37d15948eb MIPS: page.h: Define virt_to_pfn()
Define virt_to_pfn() based on the existing definition of virt_to_page()
which already does a PFN_DOWN(vir_to_phys(kaddr)).

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Maciej W. Rozycki <macro@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15409/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-09 13:25:44 +00:00
Zubair Lutfullah Kakakhel
0861aa1251 MIPS: Xilfpga: Switch to using generic defconfigs
Use the generic platform code and remove arch/mips/xilfpga

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15847/
[jhogan@kernel.org: Update arch/mips/Makefile snippet and move to end]
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-08 22:54:14 +00:00
Zubair Lutfullah Kakakhel
b35565bb16 MIPS: generic: Add support for MIPSfpga
Add support for the MIPSfpga platform to generic kernel.

Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/15846/
[jhogan@kernel.org: Use separate board-xilfpga.its.S. Add 32r2 and
 little endian requires to board-xilfpga.config]
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-08 22:53:44 +00:00
Matt Redfearn
04d8405e71 MIPS: Set defconfig target to a generic system for 32r2el
The default system type should be a MIPS generic kernel. In order to
include some level of board support, select a 32r2el generic defconfig
by default. The alternative would be to use "generic_defconfig" but
rather unintuitvely that is a bare bones configuration with no platform
support so is not usable in practice.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14715/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-08 22:25:55 +00:00
Matt Redfearn
d41e6858ba MIPS: Kconfig: Set default MIPS system type as generic
The generic MIPS system type allows building a board agnostic kernel and
should be the default starting point for users, so set it as the default
system type in Kconfig.

Since ip22 is no longer the default, update ip22_defconfig to select
CONFIG_SGI_IP22.

Signed-off-by: Matt Redfearn <matt.redfearn@imgtec.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Howells <dhowells@redhat.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/14714/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-08 22:23:45 +00:00
Shawn Lin
84fbfc33ea MIPS: DTS: Remove num-slots from Pistachio SoC
dwmmc driver deprecated num-slots and plan to get rid of it finally.
Just move a step to cleanup it from DT.

Cc: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Acked-by: James Hartley <james.hartley@sondrel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16741/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-08 22:18:54 +00:00
Allen Pais
e629cfa36e MIPS: Lasat: Use setup_timer() helper
Use setup_timer function instead of initializing timer with the function
and data fields.

Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17341/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-08 22:12:15 +00:00
Maciej W. Rozycki
d3a0b96818 MIPS: Use SLL by 0 for 32-bit truncation in `__read_64bit_c0_split'
Optimize `__read_64bit_c0_split' and reduce the instruction count by 1,
observing that a DSLL/DSRA pair by 32, is equivalent to SLL by 0, which
architecturally truncates the value requested to 32 bits on 64-bit MIPS
hardware regardless of whether the input operand is or is not a properly
sign-extended 32-bit value.

Signed-off-by: Maciej W. Rozycki <macro@imgtec.com>
Reviewed-by: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17399/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-08 21:50:52 +00:00
James Hogan
b2ec33d438 MIPS: ralink: Drop obsolete USB_ARCH_HAS_HCD select
Building an allnoconfig kernel based on the ralink platform results in
the following warning:

warning: (SOC_RT305X) selects USB_ARCH_HAS_HCD which has unmet direct dependencies (USB_SUPPORT)

This is because SOC_RT305X unconditionally selects USB_ARCH_HAS_HCD
which depends on USB_SUPPORT.

However USB_ARCH_HAS_HCD has been effectively obsolete since commit
d9ea21a779 ("usb: host: make USB_ARCH_HAS_?HCI obsolete") in 3.11.
USB_ARCH_HAS_HCD is now set by default whenever USB_SUPPORT is, so drop
the select to silence the warning.

Signed-off-by: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17618/
2017-11-08 10:23:36 +00:00
Mirko Parthey
56a46acf62 MIPS: BCM47XX: Fix LED inversion for WRT54GSv1
The WLAN LED on the Linksys WRT54GSv1 is active low, but the software
treats it as active high. Fix the inverted logic.

Fixes: 7bb26b1691 ("MIPS: BCM47xx: Fix LEDs on WRT54GS V1.0")
Signed-off-by: Mirko Parthey <mirko.parthey@web.de>
Looks-ok-by: Rafał Miłecki <zajec5@gmail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.17+
Patchwork: https://patchwork.linux-mips.org/patch/16071/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 22:40:31 +00:00
Martin Schiller
44a374c066 MIPS: Lantiq: Fix ASC0/ASC1 clocks
ASC1 is available on every Lantiq SoC (also AmazonSE) and should be
enabled like the other generic xway clocks instead of ASC0, which is
only available for AR9 and Danube.

Signed-off-by: Martin Schiller <ms@dev.tdt.de>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: John Crispin <john@phrozen.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Felix Fietkau <nbd@nbd.name>
Cc: Martin Schiller <ms@dev.tdt.de>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/16145/
[jhogan@kernel.org: Drop braces]
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 22:40:15 +00:00
Robert P. J. Day
8530762f23 MIPS: Standardize DTS files, status "ok" -> "okay"
While the current kernel code in drivers/of/ allows developers to be
sloppy and use the status value "ok", the current DTSpec 0.1 makes it
clear that the only officially proper spelling is "okay", so adjust
the very small number of DTS files under arch/mips/.

Signed-off-by: Robert P. J. Day <rpjday@crashcourse.ca>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17227/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 20:54:30 +00:00
Jonas Gorski
072916f55d MIPS: BCM63XX: split out swpkt_sar/usb clocks
Make the secondary switch clocks their own clocks. This allows proper
enable reference counting between SAR/XTM and the main switch clocks,
and controlling them individually from drivers.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17332/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:20 +00:00
Jonas Gorski
ef42351595 MIPS: BCM63XX: provide enet clocks as "enet" to the ethernet devices
Add lookups to provide the appropriate enetX clocks as just "enet" to
the ethernet devices.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17331/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:20 +00:00
Jonas Gorski
5d691036cb MIPS: BCM63XX: move the HSSPI PLL HZ into its own clock
Split up the HSSPL clock into rate and a gate clock, to more closely
match the actual hardware.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17330/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:19 +00:00
Jonas Gorski
bed8d2a23e MIPS: BMIPS: name the refclk clock for uart
Add the clock name to the uart nodes, to name the input clock
properly.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17329/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:19 +00:00
Jonas Gorski
fa1e6a8aec tty/bcm63xx_uart: allow naming clock in device tree
Codify using a named clock for the refclk of the uart. This makes it
easier if we might need to add a gating clock (like present on the
BCM6345).

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17328/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:18 +00:00
Jonas Gorski
9a9cc02a6a tty/bcm63xx_uart: use refclk for the expected clock name
We now have the clock available under refclk, so use that.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17327/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:18 +00:00
Jonas Gorski
243fa279a8 MIPS: BCM63XX: provide periph clock as refclk for uart
Add a lookup as "refclk" to describe its function for the uarts.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17326/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:17 +00:00
Jonas Gorski
c5af3c2dd0 MIPS: BCM63XX: add clkdev lookup support
Enable clkdev lookup support to allow us providing clocks under
different names to devices more easily, so we don't need to care
about clock name clashes anymore.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: linux-mips@linux-mips.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: bcm-kernel-feedback-list@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/17325/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:17 +00:00
Bhumika Goyal
c05afeec17 MIPS: Alchemy: make clk_ops const
Make these const as they are only stored in the "const " ops field of a
clk_init_data structure.

Structure found using Coccinelle and changes done by hand.

Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Cc: julia.lawall@lip6.fr
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17374/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:16 +00:00
Aleksandar Markovic
a58f85b5d5 MIPS: math-emu: Use preferred flavor of unsigned integer declarations
Fix occurences of unsigned integer variable declarations that are
not preferred by standards of checkpatch scripts. This removes a
significant number of checkpatch warnings for files in math-emu
directory (several files become completely warning-free), and thus
makes easier to spot (now and in the future) other, perhaps more
significant, checkpatch errors and warnings.

Signed-off-by: Aleksandar Markovic <aleksandar.markovic@mips.com>
Reviewed-by: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Douglas Leung <douglas.leung@mips.com>
Cc: Goran Ferenc <goran.ferenc@mips.com>
Cc: "Maciej W. Rozycki" <macro@imgtec.com>
Cc: Manuel Lauss <manuel.lauss@gmail.com>
Cc: Miodrag Dinic <miodrag.dinic@mips.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Petar Jovanovic <petar.jovanovic@mips.com>
Cc: Raghu Gandham <raghu.gandham@mips.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17582/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:16 +00:00
Aleksandar Markovic
409fcace99 MIPS: math-emu: Fix final emulation phase for certain instructions
Fix final phase of <CLASS|MADDF|MSUBF|MAX|MIN|MAXA|MINA>.<D|S>
emulation. Provide proper generation of SIGFPE signal and updating
debugfs FP exception stats in cases of any exception flags set in
preceding phases of emulation.

CLASS.<D|S> instruction may generate "Unimplemented Operation" FP
exception. <MADDF|MSUBF>.<D|S> instructions may generate "Inexact",
"Unimplemented Operation", "Invalid Operation", "Overflow", and
"Underflow" FP exceptions. <MAX|MIN|MAXA|MINA>.<D|S> instructions
can generate "Unimplemented Operation" and "Invalid Operation" FP
exceptions.

The proper final processing of the cases when any FP exception
flag is set is achieved by replacing "break" statement with "goto
copcsr" statement. With such solution, this patch brings the final
phase of emulation of the above instructions consistent with the
one corresponding to the previously implemented emulation of other
related FPU instructions (ADD, SUB, etc.).

Fixes: 38db37ba06 ("MIPS: math-emu: Add support for the MIPS R6 CLASS FPU instruction")
Fixes: e24c3bec3e ("MIPS: math-emu: Add support for the MIPS R6 MADDF FPU instruction")
Fixes: 83d43305a1 ("MIPS: math-emu: Add support for the MIPS R6 MSUBF FPU instruction")
Fixes: a79f5f9ba5 ("MIPS: math-emu: Add support for the MIPS R6 MAX{, A} FPU instruction")
Fixes: 4e9561b20e ("MIPS: math-emu: Add support for the MIPS R6 MIN{, A} FPU instruction")
Signed-off-by: Aleksandar Markovic <aleksandar.markovic@mips.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Douglas Leung <douglas.leung@mips.com>
Cc: Goran Ferenc <goran.ferenc@mips.com>
Cc: "Maciej W. Rozycki" <macro@imgtec.com>
Cc: Miodrag Dinic <miodrag.dinic@mips.com>
Cc: Paul Burton <paul.burton@mips.com>
Cc: Petar Jovanovic <petar.jovanovic@mips.com>
Cc: Raghu Gandham <raghu.gandham@mips.com>
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 4.3+
Patchwork: https://patchwork.linux-mips.org/patch/17581/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:15 +00:00
Steven J. Hill
edf188bee1 MIPS: Octeon: Remove usage of cvmx_wait() everywhere.
Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Acked-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17389/
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:33:14 +00:00
David Daney
7820b84be8 MIPS: Allow __cpu_number_map to be larger than NR_CPUS
In systems where the CPU id space is sparse, this allows a smaller
NR_CPUS to be chosen, thus keeping internal data structures smaller.

Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Carlos Munoz <cmunoz@caviumnetworks.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17388/
[jhogan@kernel.org: Add depends on SMP to fix
 "warning: symbol value '' invalid for MIPS_NR_CPU_NR_MAP"]
Signed-off-by: James Hogan <jhogan@kernel.org>
2017-11-07 18:32:10 +00:00
Mathieu Malaterre
239e14d195 MIPS: jz4780: DTS: Probe the jz4740-watchdog driver from devicetree
The jz4740-watchdog driver supports both jz4740 & jz4780.

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Paul Cercueil <paul@crapouillou.net>
Cc: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Cc: devicetree@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17291/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-10-09 14:53:57 +02:00
Mathieu Malaterre
e7af4d14e2 MIPS: Ci20: Enable watchdog driver
Update the Ci20's defconfig to enable the JZ4740's watchdog driver.

Signed-off-by: Mathieu Malaterre <malat@debian.org>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17290/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-10-09 14:53:57 +02:00
Steven J. Hill
ac4f59f88a MIPS: Remove unused variable 'lastpfn'
'lastpfn' is never used for anything. Remove it.

Signed-off-by: Steven J. Hill <steven.hill@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17276/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-10-09 14:53:57 +02:00
Chad Reese
34ae9c915f MIPS: Add nudges to writes for bit unlocks.
Flushing the writes lets other CPUs waiting for the lock to get it sooner.

Signed-off-by: Chad Reese <kreese@caviumnetworks.com>
Signed-off-by: David Daney <david.daney@cavium.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17289/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-10-09 14:53:56 +02:00
Tobias Klauser
508c5757a7 MIPS: make thread_saved_pc static
The only user of thread_saved_pc() in non-arch-specific code was removed
in commit 8243d55977 ("sched/core: Remove pointless printout in
sched_show_task()"), so it no longer needs to be globally defined for
MIPS and can be made static.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17303/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-10-09 14:53:56 +02:00
Harvey Hunt
7fd60db5b3 MIPS: Ci20: Add support for rootfs on NFS to defconfig
Now that ethernet support is in the kernel, add the option to use a
rootfs over NFS to enable automated testing of upstream kernels on a
Ci20.

Signed-off-by: Harvey Hunt <harvey.hunt@imgtec.com>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Harvey Hunt <harveyhuntnexus@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/17314/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-10-09 14:53:56 +02:00
Thomas Meyer
7a8e4158bf MIPS: Cocci spatch "vma_pages"
Use vma_pages function on vma object instead of explicit computation.
Found by coccinelle spatch "api/vma_pages.cocci"

Signed-off-by: Thomas Meyer <thomas@m3y3r.de>
Cc: linux-mips@linux-mips.org
Cc: linux-kernel@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/17333/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2017-10-09 14:53:56 +02:00
Linus Torvalds
8a5776a5f4 Linux 4.14-rc4 2017-10-08 20:53:29 -07:00
Linus Torvalds
85b1bb2480 SCSI fixes on 20171007
A couple of serious fixes (use after free and blacklist for WRITE
 SAME).  One error leg fix (write_pending failure) and one user
 experience problem (do not override max_sectors_kb) and one minor
 unused function removal.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:

 - a couple of serious fixes: use after free and blacklist for WRITE
   SAME

 - one error leg fix: write_pending failure

 - one user experience problem: do not override max_sectors_kb

 - one minor unused function removal

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: ibmvscsis: Fix write_pending failure path
  scsi: libiscsi: Remove iscsi_destroy_session
  scsi: libiscsi: Fix use-after-free race during iscsi_session_teardown
  scsi: sd: Do not override max_sectors_kb sysfs setting
  scsi: sd: Implement blacklist option for WRITE SAME w/ UNMAP
2017-10-07 12:34:16 -07:00
Linus Torvalds
67936a41e5 Merge branch 'i2c/for-current-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
 "I2C has three driver fixes for the newly introduced drivers and one ID
  addition for the i801 driver"

* 'i2c/for-current-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
  i2c: i2c-stm32f7: make structure stm32f7_setup static const
  i2c: ensure termination of *_device_id tables
  i2c: i801: Add support for Intel Cedar Fork
  i2c: stm32f7: fix setup structure
2017-10-07 10:07:51 -07:00
Linus Torvalds
031b814030 MMC core:
- Fix driver strength selection when selecting hs400es
  - Delete bounce buffer handling:
    This change fixes a problem related to how bounce buffers are being
    allocated. However, instead of trying to fix that, let's just remove
    the mmc bounce buffer code altogether, as it has practically no use.
 
 MMC host:
  - meson-gx: A couple of fixes related to clock/phase/tuning
  - sdhci-xenon: Fix clock resource by adding an optional bus clock
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Merge tag 'mmc-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "MMC core:

   - Fix driver strength selection when selecting hs400es

   - Delete bounce buffer handling:

     This change fixes a problem related to how bounce buffers are being
     allocated. However, instead of trying to fix that, let's just
     remove the mmc bounce buffer code altogether, as it has practically
     no use.

  MMC host:

   - meson-gx: A couple of fixes related to clock/phase/tuning

   - sdhci-xenon: Fix clock resource by adding an optional bus clock"

* tag 'mmc-v4.14-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-xenon: Fix clock resource by adding an optional bus clock
  mmc: meson-gx: include tx phase in the tuning process
  mmc: meson-gx: fix rx phase reset
  mmc: meson-gx: make sure the clock is rounded down
  mmc: Delete bounce buffer handling
  mmc: core: add driver strength selection when selecting hs400es
2017-10-07 10:03:03 -07:00
Linus Torvalds
1c86f2e4c8 Fix up error path in xgene driver
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Merge tag 'hwmon-for-linus-v4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging

Pull hwmon fix from Guenter Roeck:
 "Fix up error path in xgene driver"

* tag 'hwmon-for-linus-v4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
  hwmon: (xgene) Fix up error handling path mixup in 'xgene_hwmon_probe()'
2017-10-06 17:59:32 -07:00
Linus Torvalds
dbeb1a8ff5 - Build fix to export the clk_bulk_prepare() symbol
- Suspend fix for Samsung Exynos SoCs where we need to keep clks on
    across suspend
 
  - Two critical clk markings for clks that shouldn't ever turn off on
    Rockchip SoCs
 
  - A fix for a copy-paste mistake on Rockchip rk3128 causing some clks to
    touch the same bit and trample over one another
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Merge tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux

Pull clk fixes from Stephen Boyd:

 - build fix to export the clk_bulk_prepare() symbol

 - suspend fix for Samsung Exynos SoCs where we need to keep clks on
   across suspend

 - two critical clk markings for clks that shouldn't ever turn off on
   Rockchip SoCs

 - a fix for a copy-paste mistake on Rockchip rk3128 causing some clks
   to touch the same bit and trample over one another

* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
  clk: samsung: exynos4: Enable VPLL and EPLL clocks for suspend/resume cycle
  clk: Export clk_bulk_prepare()
  clk: rockchip: add sclk_timer5 as critical clock on rk3128
  clk: rockchip: fix up rk3128 pvtm and mipi_24m gate regs error
  clk: rockchip: add pclk_pmu as critical clock on rk3128
2017-10-06 16:25:08 -07:00
Linus Torvalds
ed0f72f4ea ARC udpates for 4.14-rc4
- Updates for various platforms
 
  - boot log updates for upcoming HS48 family of cores (dual issue)
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Merge tag 'arc-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc

Pull ARC udpates from Vineet Gupta:

 - updates for various platforms

 - boot log updates for upcoming HS48 family of cores (dual issue)

* tag 'arc-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
  ARC: [plat-hsdk]: Add reset controller node to manage ethernet reset
  ARC: [plat-hsdk]: Temporary fix to set CPU frequency to 1GHz
  ARC: fix allnoconfig build warning
  ARCv2: boot log: identify HS48 cores (dual issue)
  ARC: boot log: decontaminate ARCv2 ISA_CONFIG register
  arc: remove redundant UTS_MACHINE define in arch/arc/Makefile
  ARC: [plat-eznps] Update platform maintainer as Noam left
  ARC: [plat-hsdk] use actual clk driver to manage cpu clk
  ARC: [*defconfig] Reenable soft lock-up detector
  ARC: [plat-axs10x] sdio: Temporary fix of sdio ciu frequency
  ARC: [plat-hsdk] sdio: Temporary fix of sdio ciu frequency
  ARC: [plat-axs103] Add temporary quirk to reset ethernet IP
2017-10-06 15:57:08 -07:00
Linus Torvalds
eab26ad197 Changes since last update:
- fix a race between overlapping copy on write aio
 - fix cow fork swapping when we defragment reflinked files
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Merge tag 'xfs-4.14-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux

Pull xfs fixes from Darrick Wong:

 - fix a race between overlapping copy on write aio

 - fix cow fork swapping when we defragment reflinked files

* tag 'xfs-4.14-fixes-4' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: handle racy AIO in xfs_reflink_end_cow
  xfs: always swap the cow forks when swapping extents
2017-10-06 15:53:36 -07:00
Linus Torvalds
17d084c8d1 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
 "A collection of fixes for this series. This contains:

   - NVMe pull request from Christoph, one uuid attribute fix, and one
     fix for the controller memory buffer address for remapped BARs.

   - use-after-free fix for bsg, from Benjamin Block.

   - bcache race/use-after-free fix for a list traversal, fixing a
     regression in this merge window. From Coly Li.

   - null_blk change configfs dependency change from a 'depends' to a
     'select'. This is a change from this merge window as well. From me.

   - nbd signal fix from Josef, fixing a regression introduced with the
     status code changes.

   - nbd MAINTAINERS mailing list entry update.

   - blk-throttle stall fix from Joseph Qi.

   - blk-mq-debugfs fix from Omar, fixing an issue where we don't
     register the IO scheduler debugfs directory, if the driver is
     loaded with it. Only shows up if you switch through the sysfs
     interface"

* 'for-linus' of git://git.kernel.dk/linux-block:
  bsg-lib: fix use-after-free under memory-pressure
  nvme-pci: Use PCI bus address for data/queues in CMB
  blk-mq-debugfs: fix device sched directory for default scheduler
  null_blk: change configfs dependency to select
  blk-throttle: fix possible io stall when upgrade to max
  MAINTAINERS: update list for NBD
  nbd: fix -ERESTARTSYS handling
  nvme: fix visibility of "uuid" ns attribute
  bcache: use llist_for_each_entry_safe() in __closure_wake_up()
2017-10-06 12:13:50 -07:00
Linus Torvalds
80cf1f8c16 pci-v4.14-fixes-4
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Merge tag 'pci-v4.14-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "Fix legacy IDE probe issues exposed by recent PCI core IRQ mapping
  changes (Bartlomiej Zolnierkiewicz, Lorenzo Pieralisi)"

* tag 'pci-v4.14-fixes-4' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  ide: fix IRQ assignment for PCI bus order probing
  ide: pci: free PCI BARs on initialization failure
  ide: free hwif->portdev on hwif_init() failure
2017-10-06 12:07:09 -07:00
Linus Torvalds
275490680c arm64 fixes:
- Bring initialisation of user space undefined instruction handling
   early (core_initcall) since late_initcall() happens after modprobe in
   initramfs is invoked. Similar fix for fpsimd initialisation
 
 - Increase the kernel stack when KASAN is enabled
 
 - Bring the PCI ACS enabling earlier via the
   iort_init_platform_devices()
 
 - Fix misleading data abort address printing (decimal vs hex)
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

Pull arm64 fixes from Catalin Marinas:

 - Bring initialisation of user space undefined instruction handling
   early (core_initcall) since late_initcall() happens after modprobe in
   initramfs is invoked. Similar fix for fpsimd initialisation

 - Increase the kernel stack when KASAN is enabled

 - Bring the PCI ACS enabling earlier via the
   iort_init_platform_devices()

 - Fix misleading data abort address printing (decimal vs hex)

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: Ensure fpsimd support is ready before userspace is active
  arm64: Ensure the instruction emulation is ready for userspace
  arm64: Use larger stacks when KASAN is selected
  ACPI/IORT: Fix PCI ACS enablement
  arm64: fix misleading data abort decoding
2017-10-06 11:31:46 -07:00
Linus Torvalds
8d473320ee KVM fixes for v4.14-rc4
- fix PPC XIVE interrupt delivery
 - fix x86 RCU breakage from asynchronous page faults when built without
   PREEMPT_COUNT
 - fix x86 build with -frecord-gcc-switches
 - fix x86 build without X86_LOCAL_APIC
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Radim Krčmář:

 - fix PPC XIVE interrupt delivery

 - fix x86 RCU breakage from asynchronous page faults when built without
   PREEMPT_COUNT

 - fix x86 build with -frecord-gcc-switches

 - fix x86 build without X86_LOCAL_APIC

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: add X86_LOCAL_APIC dependency
  x86/kvm: Move kvm_fastop_exception to .fixup section
  kvm/x86: Avoid async PF preempting the kernel incorrectly
  KVM: PPC: Book3S: Fix server always zero from kvmppc_xive_get_xive()
2017-10-06 11:28:34 -07:00
Linus Torvalds
d109d83fc8 Third -rc update for 4.14 kernel
- a fix for iwpm netlink usage
 - a fix for error unwinding in mlx5
 - two fixes to vlan handling in qedr
 - a couple small i40iw fixes
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma fixes from Doug Ledford:
 "This is a pretty small pull request. Only 6 patches in total. There
  are no outstanding -rc patches on the mailing list after this pull
  request, so only if some new issues are discovered in the remainder of
  the rc cycles will you hear from me again.

  Summary:
   - a fix for iwpm netlink usage
   - a fix for error unwinding in mlx5
   - two fixes to vlan handling in qedr
   - a couple small i40iw fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma:
  i40iw: Fix port number for query QP
  i40iw: Add missing memory barriers
  RDMA/qedr: Parse vlan priority as sl
  RDMA/qedr: Parse VLAN ID correctly and ignore the value of zero
  IB/mlx5: Fix label order in error path handling
  RDMA/iwpm: Properly mark end of NL messages
2017-10-06 11:25:55 -07:00
Linus Torvalds
bf2db0b9f5 Merge branch 'for-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
 "Two more fixes for bugs introduced in 4.13.

  The sector_t problem with 32bit architecture and !LBDAF config seems
  serious but the number of affected deployments is hopefully low.

  The clashing status bits could lead to a confusing in-memory state of
  the whole-filesystem operations if used with the quota override sysfs
  knob"

* 'for-4.14-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  Btrfs: fix overlap of fs_info::flags values
  btrfs: avoid overflow when sector_t is 32 bit
2017-10-06 09:03:08 -07:00
Linus Torvalds
b77779b93d Two fixups for CephFS snapshot-handling patches in -rc1.
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Merge tag 'ceph-for-4.14-rc4' of git://github.com/ceph/ceph-client

Pull ceph fixes from Ilya Dryomov:
 "Two fixups for CephFS snapshot-handling patches in -rc1"

* tag 'ceph-for-4.14-rc4' of git://github.com/ceph/ceph-client:
  ceph: fix __choose_mds() for LSSNAP request
  ceph: properly queue cap snap for newly created snap realm
2017-10-06 09:01:45 -07:00
Eugeniy Paltsev
ab8eb7db1d ARC: [plat-hsdk]: Add reset controller node to manage ethernet reset
DW ethernet controller on HSDK hangs sometimes after SW reset, so
add reset node to make possible to reset DW ethernet controller HW.

Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
2017-10-06 08:59:54 -07:00