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2015-04-21sparc: Use GFP_ATOMIC in ldc_alloc_exp_dring() as it can be called in softirq contextSowmini Varadhan1-1/+1
Since it is possible for vnet_event_napi to end up doing vnet_control_pkt_engine -> ... -> vnet_send_attr -> vnet_port_alloc_tx_ring -> ldc_alloc_exp_dring -> kzalloc() (i.e., in softirq context), kzalloc() should be called with GFP_ATOMIC from ldc_alloc_exp_dring. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-21sparc64: Use M7 PMC write on all chips T4 and onward.David S. Miller1-32/+3
They both work equally well, and the M7 implementation is simpler and cheaper (less register writes). With help from David Ahern. Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-21parisc: Replace PT_NLEVELS with CONFIG_PGTABLE_LEVELSGuenter Roeck1-3/+3
The following warning is seen when compiling parisc images ./arch/parisc/include/asm/pgalloc.h: In function 'pgd_alloc': ./arch/parisc/include/asm/pgalloc.h:29:5: warning: "PT_NLEVELS" is not defined Some definitions of PT_NLEVELS were missed with the conversion to CONFIG_PGTABLE_LEVELS. Fixes: f24ffde43237 ("parisc: expose number of page table levels on Kconfig level") Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Signed-off-by: Helge Deller <deller@gmx.de>
2015-04-21parisc: Eliminate sg_virt_addr() and private scatterlist.hMatthew Wilcox6-33/+25
The only reason to keep parisc's private asm/scatterlist.h was that it had the macro sg_virt_addr(). Convert all callers to use something else (sometimes just sg->offset was enough, others should use sg_virt()), and we can just use the asm-generic scatterlist.h instead. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: Dave Anglin <dave.anglin@bell.net> Signed-off-by: Helge Deller <deller@gmx.de>
2015-04-21tcp: add memory barriers to write space pathsjbaron@akamai.com2-1/+5
Ensure that we either see that the buffer has write space in tcp_poll() or that we perform a wakeup from the input side. Did not run into any actual problem here, but thought that we should make things explicit. Signed-off-by: Jason Baron <jbaron@akamai.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-21media: remove unused variable that causes a warningLinus Torvalds1-1/+0
My 'allmodconfig' build is _almost_ free of warnings, and most of the remaining ones are for legacy drivers that just do bad things that I can't find it in my black heart to care too much about. But this one was just annoying me: drivers/media/v4l2-core/videobuf2-core.c:3256:26: warning: unused variable ‘fileio’ [-Wunused-variable] because commit 0e661006370b ("[media] vb2: fix 'UNBALANCED' warnings when calling vb2_thread_stop()") removed all users of 'fileio' and instead calls "__vb2_cleanup_fileio(q)" to clean up q->fileio. But the now unused 'fileio' variable was left around. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-21Revert "ocfs2: incorrect check for debugfs returns"Linus Torvalds3-37/+16
This reverts commit e2ac55b6a8e337fac7cc59c6f452caac92ab5ee6. Huang Ying reports that this causes a hang at boot with debugfs disabled. It is true that the debugfs error checks are kind of confusing, and this code certainly merits more cleanup and thinking about it, but there's something wrong with the trivial "check not just for NULL, but for error pointers too" patch. Yes, with debugfs disabled, we will end up setting the o2hb_debug_dir pointer variable to an error pointer (-ENODEV), and then continue as if everything was fine. But since debugfs is disabled, all the _users_ of that pointer end up being compiled away, so even though the pointer can not be dereferenced, that's still fine. So it's confusing and somewhat questionable, but the "more correct" error checks end up causing more trouble than they fix. Reported-by: Huang Ying <ying.huang@intel.com> Acked-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Chengyu Song <csong84@gatech.edu> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-20altera tse: Error-Bit on tx-avalon-stream always set.Andreas Oetken1-1/+0
The Error-Bit on the avalon streaming interface of the tx-dma-channel was always set. In SGMII configurations this leads to error-symbols on the PCS and packet-rejection on the receiver side (e.g. SGMII/1000Base-X connected switch). This only applies to the tse-configuration with MSGDMA. This issue was detected and fixed on a custom board with a direct connection to a Marvell switch in SGMII-PHY-Mode. (incl. custom patches for SGMII-PCS). According to the datasheet if ff_tx_err (avalon-streaming) is set it is forwarded to gm_tx_err. As a result the PCS is forwarding the error by sending a "/V/"-caracter. Signed-off-by: Andreas Oetken <ennoerlangen@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-20net: dsa: mv88e6xxx: use PORT_DEFAULT_VLANVivien Didelot1-1/+2
Minor, use the explicit PORT_DEFAULT_VLAN define instead of 0x07. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-20net: dsa: mv88e6xxx: fix setup of port control 1Vivien Didelot1-2/+1
mv88e6xxx_setup_port_common was writing to PORT_DEFAULT_VLAN (port offset 0x07) instead of PORT_CONTROL_1 (port offset 0x05). Fixes: cca8b1337541 ("net: dsa: Use mnemonics rather than register numbers") Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-20ppp: call skb_checksum_complete_unset in ppp_receive_frameTom Herbert1-0/+1
Call checksum_complete_unset in PPP receive to discard checksum-complete value. PPP does not pull checksum for headers and also modifies packet as in VJ compression. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-20net: add skb_checksum_complete_unsetTom Herbert1-0/+12
This function changes ip_summed to CHECKSUM_NONE if CHECKSUM_COMPLETE is set. This is called to discard checksum-complete when packet is being modified and checksum is not pulled for headers in a layer. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-20pppoe: Lacks DST MAC address checkJoakim Tjernlund1-0/+3
A pppoe session is identified by its session ID and MAC address. Currently pppoe does not check if the received pkg has the correct MAC address. This is a problem when the eth I/F is in promisc mode as then any DST MAC address is accepted. Signed-off-by: Joakim Tjernlund <joakim.tjernlund@transmode.se> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-20iommu-common: rename iommu_pool_hash to iommu_hash_commonSowmini Varadhan1-3/+3
When CONFIG_DEBUG_FORCE_WEAK_PER_CPU is set, the DEFINE_PER_CPU_SECTION macro will define an extern __pcpu_unique_##name variable that could conflict with the same definition in powerpc at this time. Avoid that conflict by renaming iommu_pool_hash in iommu-common.c Thanks to Guenter Roeck for catching this, and helping to test the fix. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-20iommu-common: fix x86_64 compiler warningsSowmini Varadhan1-7/+7
Declare iommu_large_alloc as static. Remove extern definition for iommu_tbl_pool_init(). Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Tested-by: Guenter Roeck <linux@roeck-us.net> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-20ip_forward: Drop frames with attached skb->skSebastian Pöhn1-0/+3
Initial discussion was: [FYI] xfrm: Don't lookup sk_policy for timewait sockets Forwarded frames should not have a socket attached. Especially tw sockets will lead to panics later-on in the stack. This was observed with TPROXY assigning a tw socket and broken policy routing (misconfigured). As a result frame enters forwarding path instead of input. We cannot solve this in TPROXY as it cannot know that policy routing is broken. v2: Remove useless comment Signed-off-by: Sebastian Poehn <sebastian.poehn@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-20Input: lm8333 - fix broken email addressWolfram Sang1-2/+2
My Pengutronix address is not valid anymore, redirect people to the Pengutronix kernel team. Reported-by: Harald Geyer <harald@ccbib.org> Signed-off-by: Wolfram Sang <wsa@the-dreams.de> Acked-by: Robert Schwebel <r.schwebel@pengutronix.de> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-04-20Input: cyapa - fix setting suspend scan rateDudley Du1-2/+2
The suspend scan rate value should not exceed 1000, unfortunately when implementing the limit we used max_t instead of min_t, causing the value to be at least 1000. Signed-off-by: Dudley Du <dudl@cypress.com> Reviewed-by: Benson Leung <bleung@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-04-20Input: elan_i2c - fix calculating number of x and y traces.Duson Lin2-4/+4
According to Elan's firmware engineers we should not be subtracting 1 form the raw number of x and y traces so that the pitch size is correct. For example, if the touchpad x resolution is 2800 and x trace number is 20, the pitch size of x should be 2800/20 = 140, not 2800/19 = 147.36. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-04-20Input: elan_i2c - report hovering contactsDuson Lin1-4/+11
When hover is detected report ABS_MT_DISTANCE as 1; for active contacts the distance is reported as 0. Signed-off-by: Duson Lin <dusonlin@emc.com.tw> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-04-20Input: elants_i2c - zero-extend hardware ID in firmware nameDmitry Torokhov1-1/+1
Let's zero-extend hardware id number when forming firmware file name, to avoid kernel requesting firmware like "elants_i2c_ 0.bin", which is quite unexpected. Acked-by: Charlie Mooney<charliemooney@chromium.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
2015-04-20smp: don't use 16-bit words for atomic accessesLinus Torvalds1-1/+1
Yes, it should work, but it's a bad idea. Not only did ARM64 not have the 16-bit access code (there's a separate patch to add it), it's just not a good atomic type. Some architectures fundamentally don't do atomic accesses in them (alpha), and it's not like it saves any space here anyway because of structure packing issues. We normally should aim for flags to be "unsigned int" or "unsigned long". And if space is at a premium, use a single byte (although that causes problems on alpha again). There might be very special cases where a 16-byte entity is really wanted, but this is not one of them. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-20omapdss: extend pm notifier to handle hibernationGrygorii Strashko1-0/+4
Add handling of missed events in omap_dss_pm_notif which are needed to support hibernation (suspend to disk). Signed-off-by: Grygorii Strashko <Grygorii.Strashko@linaro.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-04-20OMAPDSS: Correct video ports description file path in DT binding docJavier Martinez Canillas1-2/+2
The doc refers to Documentation/devicetree/bindings/video/video-ports.txt which does not exist. The documentation seems to be outdated and wants to refer to Documentation/devicetree/bindings/graph.txt instead. Signed-off-by: Javier Martinez Canillas <javier.martinez@collabora.co.uk> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2015-04-20OMAPDSS: disable VT switchTomi Valkeinen1-0/+3
We don't need VT switch when suspending/resuming, so disable it. This speeds up suspend/resume. Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com> Cc: NeilBrown <neil@brown.name>
2015-04-20media-bus: Fixup RGB444_1X12, RGB565_1X16, and YUV8_1X24 media bus formatPhilipp Zabel2-8/+8
Change the constant values for RGB444_1X12, RGB565_1X16, and YUV8_1X24 media bus formats in anticipation of a merge conflict with the media tree, where the old values are already taken by RBG888_1X24, RGB888_1X32_PADHI, and VUY8_1X24, respectively. Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by: Dave Airlie <airlied@redhat.com>
2015-04-19hexdump: avoid warning in test functionLinus Torvalds1-1/+1
The test_data_1_le[] array is a const array of const char *. To avoid dropping any const information, we need to use "const char * const *", not just "const char **". I'm not sure why the different test arrays end up having different const'ness, but let's make the pointer we use to traverse them as const as possible, since we modify neither the array of pointers _or_ the pointers we find in the array. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-19fs: take i_mutex during prepare_binprm for set[ug]id executablesJann Horn1-28/+48
This prevents a race between chown() and execve(), where chowning a setuid-user binary to root would momentarily make the binary setuid root. This patch was mostly written by Linus Torvalds. Signed-off-by: Jann Horn <jann@thejh.net> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-19smp: Fix error case handling in smp_call_function_*()Linus Torvalds1-1/+3
Commit 8053871d0f7f ("smp: Fix smp_call_function_single_async() locking") fixed the locking for the asynchronous smp-call case, but in the process of moving the lock handling around, one of the error cases ended up not unlocking the call data at all. This went unnoticed on x86, because this is a "caller is buggy" case, where the caller is trying to call a non-existent CPU. But apparently ARM does that (at least under qemu-arm). Bindly doing cross-cpu calls to random CPU's that aren't even online seems a bit fishy, but the error handling was clearly not correct. Simply add the missing "csd_unlock()" to the error path. Reported-and-tested-by: Guenter Roeck <linux@roeck-us.net> Analyzed-by: Rabin Vincent <rabin@rab.in> Acked-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-19cpumask: remove __first_cpu / __next_cpuRusty Russell2-23/+2
They were for use by the deprecated first_cpu() and next_cpu() wrappers, but sparc used them directly. They're now replaced by cpumask_first / cpumask_next. And __next_cpu_nr is completely obsolete. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Acked-by: David S. Miller <davem@davemloft.net>
2015-04-18iommu-common: Fix PARISC compile-time warningsSowmini Varadhan1-1/+5
Fixes warnings due to - no DMA_ERROR_CODE on PARISC, - sizeof (unsigned long) == 4 bytes on PARISC. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-18sparc: Make LDC use common iommu poll management functionsSowmini Varadhan1-88/+65
Note that this conversion is only being done to consolidate the code and ensure that the common code provides the sufficient abstraction. It is not expected to result in any noticeable performance improvement, as there is typically one ldc_iommu per vnet_port, and each one has 8k entries, with a typical request for 1-4 pages. Thus LDC uses npools == 1. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-18sparc: Make sparc64 use scalable lib/iommu-common.c functionsSowmini Varadhan4-242/+128
In iperf experiments running linux as the Tx side (TCP client) with 10 threads results in a severe performance drop when TSO is disabled, indicating a weakness in the software that can be avoided by using the scalable IOMMU arena DMA allocation. Baseline numbers before this patch: with default settings (TSO enabled) : 9-9.5 Gbps Disable TSO using ethtool- drops badly: 2-3 Gbps. After this patch, iperf client with 10 threads, can give a throughput of at least 8.5 Gbps, even when TSO is disabled. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-18Break up monolithic iommu table/lock into finer graularity pools and lockSowmini Varadhan3-1/+318
Investigation of multithreaded iperf experiments on an ethernet interface show the iommu->lock as the hottest lock identified by lockstat, with something of the order of 21M contentions out of 27M acquisitions, and an average wait time of 26 us for the lock. This is not efficient. A more scalable design is to follow the ppc model, where the iommu_map_table has multiple pools, each stretching over a segment of the map, and with a separate lock for each pool. This model allows for better parallelization of the iommu map search. This patch adds the iommu range alloc/free function infrastructure. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-18sparc: Revert generic IOMMU allocator.David S. Miller8-537/+325
I applied the wrong version of this patch series, V4 instead of V10, due to a patchwork bundling snafu. Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-18tools/power turbostat: correct dumped pkg-cstate-limit valueLen Brown1-9/+8
HSW expanded MSR_PKG_CST_CONFIG_CONTROL.Package-C-State-Limit, from bits[2:0] used by previous implementations, to [3:0]. The value 1000b is unlimited, and is used by BDW and SKL too. Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18tools/power turbostat: calculate TSC frequency from CPUID(0x15) on SKLLen Brown1-1/+38
turbostat --debug ... CPUID(0x15): eax_crystal: 2 ebx_tsc: 100 ecx_crystal_hz: 0 TSC: 1200 MHz (24000000 Hz * 100 / 2 / 1000000) Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18tools/power turbostat: correct DRAM RAPL units on recent Xeon processorsAndrey Semin1-3/+25
While not yet documented in the Software Developer's Manual, the data-sheet for modern Xeon states that DRAM RAPL ENERGY units are fixed at 15.3 uJ, rather than being discovered via MSR. Before this patch, DRAM energy on these products is over-stated by turbostat because the RAPL units are 4x larger. ref: "Xeon E5-2600 v3/E5-1600 v3 Datasheet Volume 2" http://www.intel.com/content/dam/www/public/us/en/documents/datasheets/xeon-e5-v3-datasheet-vol-2.pdf Signed-off-by: Andrey Semin <andrey.semin@intel.com> Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18tools/power turbostat: Initial Skylake supportLen Brown2-13/+116
Skylake adds some additional residency counters. Skylake supports a different mix of RAPL registers from any previous product. In most other ways, Skylake is like Broadwell. Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18tools/power turbostat: Use $(CURDIR) instead of $(PWD) and add support for O= option in MakefileThomas D1-1/+5
Since commit ee0778a30153 ("tools/power: turbostat: make Makefile a bit more capable") turbostat's Makefile is using [...] BUILD_OUTPUT := $(PWD) [...] which obviously causes trouble when building "turbostat" with make -C /usr/src/linux/tools/power/x86/turbostat ARCH=x86 turbostat because GNU make does not update nor guarantee that $PWD is set. This patch changes the Makefile to use $CURDIR instead, which GNU make guarantees to set and update (i.e. when using "make -C ...") and also adds support for the O= option (see "make help" in your root of your kernel source tree for more details). Link: https://bugs.gentoo.org/show_bug.cgi?id=533918 Fixes: ee0778a30153 ("tools/power: turbostat: make Makefile a bit more capable") Signed-off-by: Thomas D. <whissi@whissi.de> Cc: Mark Asselstine <mark.asselstine@windriver.com> Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18tools/power turbostat: modprobe msr, if neededLen Brown1-2/+3
Some distros (Ubuntu) ship the msr driver as a module. If turbosat is run as root on those systems, and discovers that there is no /dev/cpu/cpu0/msr, it will now "modprobe msr" for the user. If not root, the modprobe attempt will fail, and turbostat will exit as before: turbostat: no /dev/cpu/0/msr, Try "# modprobe msr" : No such file or directory Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18tools/power turbostat: dump MSR_TURBO_RATIO_LIMIT2Len Brown1-36/+105
and up to 18 cores of turbo ratio limit when using the turbostat --debug option. Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18tools/power turbostat: use new MSR_TURBO_RATIO_LIMIT namesLen Brown1-4/+4
s/MSR_NHM_TURBO_RATIO_LIMIT/MSR_TURBO_RATIO_LIMIT/ s/MSR_IVT_TURBO_RATIO_LIMIT/MSR_TURBO_RATIO_LIMIT1/ syntax only -- use the documented strings describing these registers. Signed-off-by: Len Brown <len.brown@intel.com>
2015-04-18Bluetooth: hidp: Fix regression with older userspace and flags validationMarcel Holtmann1-1/+2
While it is not used by newer userspace anymore, the older userspace was utilizing HIDP_VIRTUAL_CABLE_UNPLUG and HIDP_BOOT_PROTOCOL_MODE flags when adding a new HIDP connection. The flags validation is important, but we can not break older userspace and with that allow providing these flags even if newer userspace does not use them anymore. Reported-and-tested-by: Jörg Otte <jrg.otte@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-18config: Enable NEED_DMA_MAP_STATE by default when SWIOTLB is selectedKonrad Rzeszutek Wilk1-1/+1
A huge amount of NIC drivers use the DMA API, however if compiled under 32-bit an very important part of the DMA API can be ommitted leading to the drivers not working at all (especially if used with 'swiotlb=force iommu=soft'). As Prashant Sreedharan explains it: "the driver [tg3] uses DEFINE_DMA_UNMAP_ADDR(), dma_unmap_addr_set() to keep a copy of the dma "mapping" and dma_unmap_addr() to get the "mapping" value. On most of the platforms this is a no-op, but ... with "iommu=soft and swiotlb=force" this house keeping is required, ... otherwise we pass 0 while calling pci_unmap_/pci_dma_sync_ instead of the DMA address." As such enable this even when using 32-bit kernels. Reported-by: Ian Jackson <Ian.Jackson@eu.citrix.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Prashant Sreedharan <prashant@broadcom.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Michael Chan <mchan@broadcom.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: boris.ostrovsky@oracle.com Cc: cascardo@linux.vnet.ibm.com Cc: david.vrabel@citrix.com Cc: sanjeevb@broadcom.com Cc: siva.kallam@broadcom.com Cc: vyasevich@gmail.com Cc: xen-devel@lists.xensource.com Link: http://lkml.kernel.org/r/20150417190448.GA9462@l.oracle.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-18perf/x86/intel/pt: Fix and clean up error handling in pt_event_add()Ingo Molnar1-18/+15
Dan Carpenter reported that pt_event_add() has buggy error handling logic: it returns 0 instead of -EBUSY when it fails to start a newly added event. Furthermore, the control flow in this function is messy, with cleanup labels mixed with direct returns. Fix the bug and clean up the code by converting it to a straight fast path for the regular non-failing case, plus a clear sequence of cascading goto labels to do all cleanup. NOTE: I materially changed the existing clean up logic in the pt_event_start() failure case to use the direct perf_aux_output_end() path, not pt_event_del(), because perf_aux_output_end() is enough here. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Julia Lawall <julia.lawall@lip6.fr> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20150416103830.GB7847@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2015-04-17net: dsa: use DEVICE_ATTR_RW to declare temp1_maxVivien Didelot1-3/+3
Since commit da4759c (sysfs: Use only return value from is_visible for the file mode), it is possible to reduce the permissions of a file. So declare temp1_max with the DEVICE_ATTR_RW macro and remove the write permission in dsa_hwmon_attrs_visible if set_temp_limit isn't provided. Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-17ide: remove deprecated use of pci apiQuentin Lambert4-7/+6
Replace occurences of the pci api by appropriate call to the dma api. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr) @deprecated@ idexpression id; position p; @@ ( pci_dma_supported@p ( id, ...) | pci_alloc_consistent@p ( id, ...) ) @bad1@ idexpression id; position deprecated.p; @@ ...when != &id->dev when != pci_get_drvdata ( id ) when != pci_enable_device ( id ) ( pci_dma_supported@p ( id, ...) | pci_alloc_consistent@p ( id, ...) ) @depends on !bad1@ idexpression id; expression direction; position deprecated.p; @@ ( - pci_dma_supported@p ( id, + dma_supported ( &id->dev, ... + , GFP_ATOMIC ) | - pci_alloc_consistent@p ( id, + dma_alloc_coherent ( &id->dev, ... + , GFP_ATOMIC ) ) Signed-off-by: Quentin Lambert <lambert.quentin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-17iommu-common: Fix PARISC compile-time warningsSowmini Varadhan1-1/+5
Fixes warnings due to - no DMA_ERROR_CODE on PARISC, - sizeof (unsigned long) == 4 bytes on PARISC. Signed-off-by: Sowmini Varadhan <sowmini.varadhan@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2015-04-17netns: remove BUG_ONs from net_generic()Denys Vlasenko1-2/+0
This inline has ~500 callsites. On 04/14/2015 08:37 PM, David Miller wrote: > That BUG_ON() was added 7 years ago, and I don't remember it ever > triggering or helping us diagnose something, so just remove it and > keep the function inlined. On x86 allyesconfig build: text data bss dec hex filename 82447071 22255384 20627456 125329911 77861f7 vmlinux4 82441375 22255384 20627456 125324215 7784bb7 vmlinux5prime Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com> CC: Eric W. Biederman <ebiederm@xmission.com> CC: David S. Miller <davem@davemloft.net> CC: Jan Engelhardt <jengelh@medozas.de> CC: Jiri Pirko <jpirko@redhat.com> CC: linux-kernel@vger.kernel.org CC: netdev@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>