Commit Graph

509940 Commits

Author SHA1 Message Date
Sudip Mukherjee
06a1bf8136 staging: sm750fb: fix mixed declarations
we were getting build warning about mixed declaration. the variable
is now declared at the beginning of the block.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-10 21:11:47 +01:00
Sudip Mukherjee
54a1a05fe2 staging: sm750fb: correct function return
hw_cursor_setData2() is a function with void return type but it was
returning an integer.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-10 21:11:06 +01:00
Sudip Mukherjee
041d3a42e7 staging: sm750fb: remove unused variables
removed some variables which were only declared but were never used.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-10 21:08:06 +01:00
Sudip Mukherjee
4933b29bd4 staging: sm750fb: remove unused functions
removed the functions which were not used anywhere.
it has been build tested also confirmed with git grep that there is
no other reference of these functions.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-10 21:08:06 +01:00
Russell King
6d021b7244 ARM: dump pgd, pmd and pte states on unhandled data abort faults
It can be useful to dump the page table entries when an unhandled data
abort fault occurs.  This can aid debugging of these situations, for
example, a STREX instruction causing an external abort on non-linefetch
fault, as has been reported recently.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-03-10 19:54:56 +00:00
Russell King
8bf1268f48 ARM: dma-api: fix off-by-one error in __dma_supported()
When validating the mask against the amount of memory we have available
(so that we can trap 32-bit DMA addresses with >32-bits memory), we had
not taken account of the fact that max_pfn is the maximum PFN number
plus one that would be in the system.

There are several references in the code which bear this out:

mm/page_owner.c:
	for (; pfn < max_pfn; pfn++) {
	}

arch/x86/kernel/setup.c:
	high_memory = (void *)__va(max_pfn * PAGE_SIZE - 1)

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2015-03-10 19:48:35 +00:00
David S. Miller
3f39d6257b iwlwifi:
* fix ROC removal - avoids a firmware crash
 * fix throughput regression on iwldvm devices
 * fix panic in BT Coex
 * fixes in rate control
 * fixes in scan
 
 b43:
 
 * fix support for 5 GHz only BCM43228 model
 
 rtlwifi:
 
 * improve handling of IPv6 packets
 
 brcmfmac:
 
 * perform bound checking on vendor command buffer
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Merge tag 'wireless-drivers-for-davem-2015-03-10' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers

iwlwifi:

* fix ROC removal - avoids a firmware crash
* fix throughput regression on iwldvm devices
* fix panic in BT Coex
* fixes in rate control
* fixes in scan

b43:

* fix support for 5 GHz only BCM43228 model

rtlwifi:

* improve handling of IPv6 packets

brcmfmac:

* perform bound checking on vendor command buffer

Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-10 13:43:02 -04:00
Hariprasad Shenai
e3d50738e5 cxgb4: fix coccinelle warnings
Commit 16e47624e7 ("cxgb4: Add new scheme to update T4/T5 firmware")
introduced below coccinelle warning.

>> drivers/net/ethernet/chelsio/cxgb4/t4_hw.c:994:2-8: Replace memcpy with
   struct assignment

Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-10 13:42:00 -04:00
Nimrod Andy
af5cbc9822 net: fec: fix receive VLAN CTAG HW acceleration issue
The current driver support receive VLAN CTAG HW acceleration feature
(NETIF_F_HW_VLAN_CTAG_RX) through software simulation. There calls the
api .skb_copy_to_linear_data_offset() to skip the VLAN tag, but there
have overlap between the two memory data point range. The patch just fix
the issue.

V2:
Michael Grzeschik suggest to use memmove() instead of skb_copy_to_linear_data_offset().

Reported-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Fixes: 1b7bde6d65 ("net: fec: implement rx_copybreak to improve rx performance")
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-10 13:37:01 -04:00
Peter Hurley
8cbba1ab1a of: unittest: Add options string testcase variants
Add testcase variants with '/' in the options string to test for
scan beyond end path name terminated by ':'.

Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10 10:44:21 -05:00
Leif Lindholm
106937e8cc of: fix handling of '/' in options for of_find_node_by_path()
Ensure proper handling of paths with appended options (after ':'),
where those options may contain a '/'.

Fixes: 7914a7c565 ("of: support passing console options with stdout-path")
Reported-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Leif Lindholm <leif.lindholm@linaro.org>
Cc: <stable@vger.kernel.org> # 3.19
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10 10:34:35 -05:00
Wang Long
649022e08e of/unittest: Fix the wrong expected value in of_selftest_property_string
This patch fix the wrong expected value of of_property_match_string
in of_selftest_property_string.

Signed-off-by: Wang Long <long.wanglong@huawei.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10 10:34:34 -05:00
Wang Long
dc6a9453eb of/unittest: remove the duplicate of_changeset_init
Remove the duplicate of_changeset_init. In of_selftest_changeset
testcase, the "struct of_changeset chgset" is initialized twice,
but only once is enough. so, drop the first initializtion code.

Signed-off-by: Wang Long <long.wanglong@huawei.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10 10:34:34 -05:00
Matt Porter
d1e9fa9838 dt: submitting-patches: clarify that DT maintainers are to be cced on bindings
The exact steps provided for submitting binding patches can be read
as requiring the bindings to be sent only to the devicetree@vger.kernel.org
list. Since the DT maintainers would like to be Cced on any binding
submissions, make this requirement explicit in step 2.

Signed-off-by: Matt Porter <mporter@konsulko.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10 10:34:33 -05:00
Arnd Bergmann
4252de39d6 of: unittest: fix I2C dependency
The unittest fails to link if I2C or I2C_MUX is a loadable module:

  drivers/built-in.o: In function `selftest_i2c_mux_remove':
  unittest.c:(.text+0xb0ce4): undefined reference to `i2c_del_mux_adapter'

This changes the newly added IS_ENABLED() checks to use IS_BUILTIN()
instead, which evaluates to false if the other driver is a module.

Reported-by: Chen Gang <gang.chen.5i5j@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Fixes: d5e75500ca ("of: unitest: Add I2C overlay unit tests.")
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10 10:34:33 -05:00
Fabio Estevam
d3a891652a of/overlay: Remove unused variable
Commit 3e7f7626fd ("of/overlay: Do not generate duplicate nodes") removed
the only use of the 'grandchild' variable, which leads to the following build
warning:

drivers/of/overlay.c: In function 'of_overlay_apply_single_device_node':
drivers/of/overlay.c:89:31: warning: unused variable 'grandchild' [-Wunused-variable]
  struct device_node *tchild, *grandchild;
                               ^

Remove this unused variable.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10 10:34:33 -05:00
Chunyan Zhang
20aa4d8ae8 Documentation: DT: Renamed of-serial.txt to 8250.txt
The file of-serial.txt was only for 8250 compatible UART implementations,
so renamed it to 8250.txt to avoid confusing other persons.
This is suggested by Arnd, see:
http://lists.infradead.org/pipermail/linux-arm-kernel/2014-September/291455.html

Signed-off-by: Chunyan Zhang <chunyan.zhang@spreadtrum.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10 10:34:32 -05:00
Peter Hurley
2fa645cb27 of: Fix premature bootconsole disable with 'stdout-path'
Support for devicetree serial consoles via 'stdout-path' causes
bootconsoles to be disabled when the vt dummy console loads, since
there is no preferred console (the preferred console is not added
until the device is probed).

Ensure there is at least a preferred console, even if never matched.

Requires: "console: Fix console name size mismatch"
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Rob Herring <robh@kernel.org>
2015-03-10 10:27:21 -05:00
Sudip Mukherjee
5c7784b9d6 staging: sm750fb: fix build failure
for powerpc-allyesconfig build failed with an error of g_option
undeclared. we will get this error on all architecture if MODULE is
not defined. fixed the declaration of g_option.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-10 16:02:35 +01:00
Sudip Mukherjee
848f2fce7b staging: sm750fb: fix undeclared function
kbuild test robot reported that for microblaze-allyesconfig
chan_to_field() and lynxfb_ops_set_par() were not defined. These two
functions were defined under CONFIG_PM, so for any archtecture if
CONFIG_PM is not defined we will have this error.

while moving the lynxfb_suspend() function some very obvious
checkpatch errors, like space after comma, space after if, space
before opening brace, were taken care of.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-10 16:02:35 +01:00
Sudip Mukherjee
62fa8e1014 staging: sm750fb: correctly define SM750LE_REVISION_ID
check if it is already defined before defining SM750LE_REVISION_ID
again and at the same time mention correct data type.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-10 16:02:35 +01:00
Sudip Mukherjee
c97df7c2c0 staging: sm750fb: remove pragma optimize
remove use of #pragma optimize which will usually be ignored by the
compiler.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-10 16:02:35 +01:00
Takashi Sakamoto
59294a01d7 ALSA: firewire-lib: leave unit reference counting completely
With previous commit, this module managed to leave the counting to each
drivers, but the isochronous resources functionality still increment/decrement
the count.

This commit purge such codes to leave the responsibility to each drivers.

Fix: c6f224dc20 ('ALSA: firewire-lib: remove reference counting')
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-10 15:27:19 +01:00
Takashi Sakamoto
5b1274efe2 Revert "ALSA: dice: fix wrong offsets for Dice interface"
This reverts commit 8cdebf7109.

The reverted commit breaks out-stream functionality of Dice driver.

Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2015-03-10 15:26:25 +01:00
Rob Herring
2c192699a7 Linux 4.0-rc3
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Merge tag 'v4.0-rc3' into HEAD

Linux 4.0-rc3

Merging in v4.0-rc3 because commit 30a22c215a (console: Fix
console name size mismatch) is a dependency.
2015-03-10 09:03:04 -05:00
Xiubo Li
1170adc6dd KVM: Use pr_info/pr_err in kvm_main.c
WARNING: Prefer [subsystem eg: netdev]_info([subsystem]dev, ... then
dev_info(dev, ... then pr_info(...  to printk(KERN_INFO ...
+   printk(KERN_INFO "kvm: exiting hardware virtualization\n");

WARNING: Prefer [subsystem eg: netdev]_err([subsystem]dev, ... then
dev_err(dev, ... then pr_err(...  to printk(KERN_ERR ...
+	printk(KERN_ERR "kvm: misc device register failed\n");

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:45 -03:00
Xiubo Li
20e87b7224 KVM: Fix indentation in kvm_main.c
ERROR: code indent should use tabs where possible
+                                 const struct kvm_io_range *r2)$

WARNING: please, no spaces at the start of a line
+                                 const struct kvm_io_range *r2)$

This patch fixes this ERROR & WARNING to reduce noise when checking new
patches in kvm_main.c.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:44 -03:00
Xiubo Li
b7d409deb9 KVM: no space before tabs in kvm_main.c
WARNING: please, no space before tabs
+ * ^I^Ikvm->lock --> kvm->slots_lock --> kvm->irq_lock$

WARNING: please, no space before tabs
+^I^I * ^I- gfn_to_hva (kvm_read_guest, gfn_to_pfn)$

WARNING: please, no space before tabs
+^I^I * ^I- kvm_is_visible_gfn (mmu_check_roots)$

This patch fixes these warnings to reduce noise when checking new
patches in kvm_main.c.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:44 -03:00
Xiubo Li
f95ef0cd02 KVM: Missing blank line after declarations in kvm_main.c
There are many Warnings like this:
WARNING: Missing a blank line after declarations
+	struct kvm_coalesced_mmio_zone zone;
+	r = -EFAULT;

This patch fixes these warnings to reduce noise when checking new
patches in kvm_main.c.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:44 -03:00
Xiubo Li
ee543159d5 KVM: EXPORT_SYMBOL should immediately follow its function
WARNING: EXPORT_SYMBOL(foo); should immediately follow its
function/variable
+EXPORT_SYMBOL_GPL(gfn_to_page);

This patch fixes these warnings to reduce noise when checking new
patches in kvm_main.c.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:44 -03:00
Xiubo Li
f4fee93270 KVM: Fix ERROR: do not initialise statics to 0 or NULL in kvm_main.c
ERROR: do not initialise statics to 0 or NULL
+static int kvm_usage_count = 0;

The kvm_usage_count will be placed to .bss segment when linking, so
not need to set it to 0 here obviously.

This patch fixes this ERROR to reduce noise when checking new patches
in kvm_main.c.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:44 -03:00
Xiubo Li
a642a17567 KVM: Fix WARNING: labels should not be indented in kvm_main.c
WARNING: labels should not be indented
+   out_free_irq_routing:

This patch fixes this WARNING to reduce noise when checking new patches
in kvm_main.c.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:43 -03:00
Xiubo Li
893bdbf165 KVM: Fix WARNINGs for 'sizeof(X)' instead of 'sizeof X' in kvm_main.c
There are many WARNINGs like this:
WARNING: sizeof tr should be sizeof(tr)
+	if (copy_from_user(&tr, argp, sizeof tr))

In kvm_main.c many places are using 'sizeof(X)', and the other places
are using 'sizeof X', while the kernel recommands to use 'sizeof(X)',
so this patch will replace all 'sizeof X' to 'sizeof(X)' to make them
consistent and at the same time to reduce the WARNINGs noise when we
are checking new patches.

Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:43 -03:00
Thomas Huth
548ef28449 KVM: Get rid of kvm_kvfree()
kvm_kvfree() provides exactly the same functionality as the
new common kvfree() function - so let's simply replace the
kvm function with the common function.

Signed-off-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:43 -03:00
Christian Borntraeger
0fa9778895 KVM: make halt_poll_ns static
halt_poll_ns is used only locally. Make it static.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:43 -03:00
Wincy Van
5bda6eed2e KVM: ioapic: Record edge-triggered interrupts delivery status
This patch fixes the bug discussed in
https://www.mail-archive.com/kvm@vger.kernel.org/msg109813.html

This patch uses a new field named irr_delivered to record the
delivery status of edge-triggered interrupts, and clears the
delivered interrupts in kvm_get_ioapic. So it has the same effect
of commit 0bc830b05c
("KVM: ioapic: clear IRR for edge-triggered interrupts at delivery")
while avoids the bug of Windows guests.

Signed-off-by: Wincy Van <fanwenyi0529@gmail.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:43 -03:00
Kevin Mulvey
ae548c5c80 KVM: fix checkpatch.pl errors in kvm/irqchip.c
Fix whitespace around while

Signed-off-by: Kevin Mulvey <kmulvey@linux.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:42 -03:00
Kevin Mulvey
bfda0e8491 KVM: white space formatting in kvm_main.c
Better alignment of loop using tabs rather than spaces, this
makes checkpatch.pl happier.

Signed-off-by: Kevin Mulvey <kmulvey@linux.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:42 -03:00
David Kaplan
668f198f40 KVM: SVM: use kvm_register_write()/read()
KVM has nice wrappers to access the register values, clean up a few places
that should use them but currently do not.

Signed-off-by: David Kaplan <david.kaplan@amd.com>
[forward port and testing]
Signed-off-by: Joel Schopp <joel.schopp@amd.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2015-03-10 10:37:42 -03:00
Chris Wilson
5e4f518959 drm/i915: Prevent TLB error on first execution on SNB
Long ago I found that I was getting sporadic errors when booting SNB,
with the symptom being that the first batch died with IPEHR != *ACTHD,
typically caused by the TLB being invalid. These magically disappeared
if I held the forcewake during the entire ring initialisation sequence.
(It can probably be shortened to a short critical section, but the whole
initialisation is full of register writes and so we would be taking and
releasing forcewake almost continually, and so holding it over the
entire sequence will probably be a net win!)

Note some of the kernels I encounted the issue already had the deferred
forcewake release, so it is still relevant.

I know that there have been a few other reports with similar failure
conditions on SNB, I think such as
References: https://bugs.freedesktop.org/show_bug.cgi?id=80913

v2: Wrap i915_gem_init_hw() with its own security blanket as we take
that path following resume and reset.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-03-10 15:30:23 +02:00
Sudip Mukherjee
e936351a61 staging: sm750fb: wrong type for print
mention correct format specifier while printing.
fixes all the build warnings about incorrect argument type while
printing.
since this is a framebuffer device and it should follow what the
framebuffer layer is suggesting in struct fb_fix_screeninfo at
smem_start and mmio_start, so accordingly changed the datatypes of
vidmem_start, vidreg_start, vidmem_size and vidreg_size.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-03-10 13:56:23 +01:00
Denys Vlasenko
263042e463 x86/asm/entry/64: Save user RSP in pt_regs->sp on SYSCALL64 fastpath
Prepare for the removal of 'usersp', by simplifying PER_CPU(old_rsp) usage:

  - use it only as temp storage

  - store the userspace stack pointer immediately in pt_regs->sp
    on syscall entry, instead of using it later, on syscall exit.

  - change C code to use pt_regs->sp only, instead of PER_CPU(old_rsp)
    and task->thread.usersp.

FIXUP/RESTORE_TOP_OF_STACK are simplified as well.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1425926364-9526-4-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10 13:56:10 +01:00
Denys Vlasenko
616ab249f1 x86/asm/entry/64: Remove stub_iopl
stub_iopl is no longer needed: pt_regs->flags needs no fixing up
after previous change. Remove it.

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1425984307-2143-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10 13:56:10 +01:00
Denys Vlasenko
29722cd4ef x86/asm/entry/64: Save R11 into pt_regs->flags on SYSCALL64 fastpath
Before this patch, R11 was saved in pt_regs->r11.

Which looks natural, but requires messy shuffling to/from iret
frame whenever ptrace or e.g. sys_iopl() wants to modify flags -
because that's how this register is used by SYSCALL/SYSRET.

This patch saves R11 in pt_regs->flags, and uses that value for
the SYSRET64 instruction. Shuffling is eliminated.

FIXUP/RESTORE_TOP_OF_STACK are simplified.

stub_iopl is no longer needed: pt_regs->flags needs no fixing up.

Testing shows that syscall fast path is ~54.3 ns before
and after the patch (on 2.7 GHz Sandy Bridge CPU).

Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Will Drewry <wad@chromium.org>
Link: http://lkml.kernel.org/r/1425926364-9526-2-git-send-email-dvlasenk@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-03-10 13:56:10 +01:00
Axel Lin
739ae3452d phy: berlin-usb: Set drvdata for phy and use it
At the context where we have pointer to struct phy, it's useful to call
phy_get_drvdata() to get the address of priv. With this change, we can
remove the to_phy_berlin_usb_priv() macro and remove *phy from struct
phy_berlin_usb_priv.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-03-10 17:18:09 +05:30
Stephen Rothwell
7e476c7dd8 regulator: fixes for regulator_set_optimum_mode name change
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Mark Brown <broonie@kernel.org>
2015-03-10 10:39:32 +00:00
Mika Kuoppala
0cd0caad99 drm/i915: Do both mt and gen6 style forcewake reset on ivb probe
commit 05a2fb157e ("drm/i915: Consolidate forcewake code")
failed to take into account that we have used to reset both
the gen6 style and the multithreaded style forcewake registers.
This is due to fact that ivb can use either, depending on how the
bios has set up the machine.

Mimic the old semantics before we have determined the correct variety
and reset both before the ecobus probe.

Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Huang Ying <ying.huang@intel.com>
Signed-off-by: Mika Kuoppala <mika.kuoppala@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-03-10 11:56:57 +02:00
Chris Wilson
762e45836a drm/i915: Make WAIT_IOCTL negative timeouts be indefinite again
This fixes a regression from

commit 5ed0bdf21a
Author: Thomas Gleixner <tglx@linutronix.de>
Date:   Wed Jul 16 21:05:06 2014 +0000

    drm: i915: Use nsec based interfaces

that made a negative timeout return immediately rather than the
previously defined behaviour of waiting indefinitely.

Testcase: igt/gem_wait
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89494
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Ben Widawsky <benjamin.widawsky@intel.com>
Cc: Kristian Høgsberg <krh@bitplanet.net>
Cc: stable@vger.kernel.org
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
[Jani: fixed a checkpatch complaint about whitespace.]
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-03-10 11:55:03 +02:00
Dave Gordon
6c51d46f13 drm/i915: use in_interrupt() not in_irq() to check context
The kernel in_irq() function tests for hard-IRQ context only, so if a
system is run with the kernel 'threadirqs' option selected, the test in
intel_check_page_flip() generates lots of warnings, because then it gets
called in soft-IRQ context.

We can instead use in_interrupt() which allows for either type of
interrupt, while still detecting and complaining about misuse of the
page flip code if it is ever called from non-interrupt context.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89321
Signed-off-by: Dave Gordon <david.s.gordon@intel.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
2015-03-10 11:16:54 +02:00
Axel Lin
298fe56ee2 phy: ti-pipe3: Remove unneeded ifdef CONFIG_OF guard and of_match_ptr
if !CONFIG_OF, the probe fails.
This is a dt-only driver, so the ifdef CONFIG_OF guard and of_match_ptr are
not needed.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
2015-03-10 14:12:28 +05:30