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2014-09-30drm/nouveau: bump driver patchlevel to 1.2.1Maarten Lankhorst
Allows userspace to detect shared fences are supported. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@canonical.com>
2014-09-30video/atmel_lcdfb: Introduce regulator supportAlexander Stein
This adds regulator support to enable/disable the LCD voltage, using 'lcd-supply' as regulator name. Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30mpc85xx_edac: Make L2 interrupt shared tooBorislav Petkov
The other two interrupt handlers in this driver are shared, except this one. When loading the driver, it fails like this. So make the IRQ line shared. Freescale(R) MPC85xx EDAC driver, (C) 2006 Montavista Software mpc85xx_mc_err_probe: No ECC DIMMs discovered EDAC DEVICE0: Giving out device to module MPC85xx_edac controller mpc85xx_l2_err: DEV mpc85xx_l2_err (INTERRUPT) genirq: Flags mismatch irq 16. 00000000 ([EDAC] L2 err) vs. 00000080 ([EDAC] PCI err) mpc85xx_l2_err_probe: Unable to request irq 16 for MPC85xx L2 err remove_proc_entry: removing non-empty directory 'irq/16', leaking at least 'aerdrv' ------------[ cut here ]------------ WARNING: at fs/proc/generic.c:521 Modules linked in: CPU: 0 PID: 1 Comm: swapper/0 Not tainted 3.17.0-rc5-dirty #1 task: ee058000 ti: ee046000 task.ti: ee046000 NIP: c016c0c4 LR: c016c0c4 CTR: c037b51c REGS: ee047c10 TRAP: 0700 Not tainted (3.17.0-rc5-dirty) MSR: 00029000 <CE,EE,ME> CR: 22008022 XER: 20000000 GPR00: c016c0c4 ee047cc0 ee058000 00000053 00029000 00000000 c037c744 00000003 GPR08: c09aab28 c09aab24 c09aab28 00000156 20008028 00000000 c0002ac8 00000000 GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000139 c0950394 GPR24: c09f0000 ee5585b0 ee047d08 c0a10000 ee047d08 ee15f808 00000002 ee03f660 NIP [c016c0c4] remove_proc_entry LR [c016c0c4] remove_proc_entry Call Trace: remove_proc_entry (unreliable) unregister_irq_proc free_desc irq_free_descs mpc85xx_l2_err_probe platform_drv_probe really_probe __driver_attach bus_for_each_dev bus_add_driver driver_register mpc85xx_mc_init do_one_initcall kernel_init_freeable kernel_init ret_from_kernel_thread Instruction dump: ... Reported-and-tested-by: <lpb_098@163.com> Acked-by: Johannes Thumshirn <johannes.thumshirn@men.de> Cc: stable@vger.kernel.org Signed-off-by: Borislav Petkov <bp@suse.de>
2014-09-30fbdev: sh_mobile_hdmi: Re-init regs before irq re-enable on resumeGeert Uytterhoeven
When the PM domain containing the HDMI hardware block is powered down, the HDMI register values (incl. interrupt polarity settings) are lost. During resume, after powering up the PM domain, interrupts are re-enabled, and an interrupt storm happens due to incorrect interrupt polarity settings: irq 163: nobody cared (try booting with the "irqpoll" option) ... Disabling IRQ #163 To fix this, re-initialize the interrupt polarity settings, and the htop1 register block (if present), during resume. As the .suspend_noirq() and .resume_noirq() callbacks are not called when using the generic PM domain, the normal .resume() callback is used, and the device interrupt needs to be disabled/enabled manually. This fixes resume from s2ram with power down of the A4MP PM domain on r8a7740/Armadillo. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30framebuffer: fix screen corruption when copyingMikulas Patocka
The function bitcpy_rev has a bug that may result in screen corruption. The bug happens under these conditions: * the end of the destination area of a copy operation is aligned on a long word boundary * the end of the source area is not aligned on a long word boundary * we are copying more than one long word In this case, the variable shift is non-zero and the variable first is zero. The statements FB_WRITEL(comp(d0, FB_READL(dst), first), dst) reads the last long word of the destination and writes it back unchanged (because first is zero). Correctly, we should write the variable d0 to the last word of the destination in this case. This patch fixes the bug by introducing and extra test if first is zero. The patch also removes the references to fb_memmove in the code that is commented out because fb_memmove was removed from framebuffer subsystem. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30framebuffer: fix border colorMikulas Patocka
The framebuffer code uses the current background color to fill the border when switching consoles, however, this results in inconsistent behavior. For example: - start Midnigh Commander - the border is black - switch to another console and switch back - the border is cyan - type something into the command line in mc - the border is cyan - switch to another console and switch back - the border is black - press F9 to go to menu - the border is black - switch to another console and switch back - the border is dark blue When switching to a console with Midnight Commander, the border is random color that was left selected by the slang subsystem. This patch fixes this inconsistency by always using black as the background color when switching consoles. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Cc: stable@vger.kernel.org Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30arm, fbdev, omap2, LLVMLinux: Remove nested function from omapfbBehan Webster
Replace the use of nested functions where a normal function will suffice. Nested functions are not liked by upstream kernel developers in general. Their use breaks the use of clang as a compiler, and doesn't make the code any better. This code now works for both gcc and clang. Signed-off-by: Behan Webster <behanw@converseincode.com> Suggested-by: Arnd Bergmann <arnd@arndb.de> Cc: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30arm, fbdev, omap2, LLVMLinux: Remove nested function from omap2 dssBehan Webster
Replace the use of nested functions where a normal function will suffice. Nested functions are not liked by upstream kernel developers in general. Their use breaks the use of clang as a compiler, and doesn't make the code any better. This code now works for both gcc and clang. Signed-off-by: Behan Webster <behanw@converseincode.com> Suggested-by: Arnd Bergmann <arnd@arndb.de> Cc: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Felipe Balbi <balbi@ti.com> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30video: fbdev: valkyriefb.c: use container_of to resolve fb_info_valkyrie ↵Fabian Frederick
from fb_info Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30video: fbdev: pxafb.c: use container_of to resolve pxafb_info/layer from fb_infoFabian Frederick
Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30video: fbdev: cyber2000fb.c: use container_of to resolve cfb_info from fb_infoFabian Frederick
Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30video: fbdev: controlfb.c: use container_of to resolve fb_info_control from ↵Fabian Frederick
fb_info Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30video: fbdev: sa1100fb.c: use container_of to resolve sa1100fb_info from fb_infoFabian Frederick
Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30video: fbdev: stifb.c: use container_of to resolve stifb_info from fb_infoFabian Frederick
Use container_of instead of casting first structure member. Signed-off-by: Fabian Frederick <fabf@skynet.be> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30video: fbdev: sis: sis_main.c: Cleaning up missing null-terminate in ↵Rickard Strandqvist
conjunction with strncpy Replacing strncpy with strlcpy to avoid strings that lacks null terminate. Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30video: valkyriefb: Fix unused variable warning in set_valkyrie_clock()Geert Uytterhoeven
If CONFIG_ADB_CUDA=n: drivers/video/fbdev/valkyriefb.c: In function ‘set_valkyrie_clock’: drivers/video/fbdev/valkyriefb.c:267: warning: unused variable ‘i’ drivers/video/fbdev/valkyriefb.c:266: warning: unused variable ‘req’ Move the variable declarations inside the existing #ifdef section to fix this. Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
2014-09-30pinctrl: abx500: refactor DT parser to take two pathsLinus Walleij
We refactor the DT parser to look for either a config or a function and then look for further nodes and reserve maps, not the two things mixed up like prior to this patch. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-09-30pinctrl: abx500: use helpers for map allocation/freeLinus Walleij
This switches the abx500 driver to use the pin control helper utils for allocating and free:ing maps. Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2014-09-30ALSA: ctxfi: pr_* replaced with dev_*Sudip Mukherjee
pr_* macros replaced with dev_* as they are more preffered over pr_*. each file which had pr_* was reviewed manually and replaced with dev_*. here we have actually used the various snd_card which was added to some structures of ctxfi via a previous patch of this series. in the ctvmem.c file we have passed a reference of ct_atc as an argument to get_vm_block function so that it can be used from dev_*. since dev_* will print the device information , so the prefix of "ctxfi" from the various pr_* were also removed. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-09-30ALSA: ctxfi: ctatc: added reference to snd_cardSudip Mukherjee
added reference of the card in the convert_format function so that we can know which card has called the function. this reference of the snd_card will actually be used in a later patch to convert the pr_* macro to dev_*. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-09-30ALSA: ctxfi: initialized snd_cardSudip Mukherjee
initialized the reference of snd_card which was added to the various structures through the previous patch of the series. these references of snd_card will be used in a later patch to convert the pr_* macros to dev_* Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-09-30ALSA: ctxfi: added reference of snd_cardSudip Mukherjee
added a pointer of snd_card in some of the structures to get a reference of the card from other functions. these references of snd_card will be initialised in the next patch of this series and as of now these snd_card will be used to print the the device information when we convert the pr_* macros to dev_* in a later patch of this series. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-09-30ALSA: ctxfi: removed typecast to (struct hw *)Sudip Mukherjee
the previous patch of the series has converted the void * to struct hw * . Now this patch removes the typecasting to (struct hw *) which is not needed any more. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-09-30ALSA: ctxfi: changed void * to struct hw *Sudip Mukherjee
in the code we have void *hw and while using we are always typecasting it to (struct hw *). it is better to use void type of pointer when we store different types of pointer , but in this code we are only having struct hw. So changed all the relevant reference of void *hw to struct hw *hw, without any modification of the existing code logic. the next patch of the series will remove the typecasting which is not required now. Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2014-09-30Merge tag 'asoc-v3.17-rc6' of ↵Takashi Iwai
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Fixes for v3.17 A few small driver specific fixes and a couple of error handling fixes in the core.
2014-09-30s390/mm: make use of ipte range facilityHeiko Carstens
Invalidate several pte entries at once if the ipte range facility is available. Currently this works only for DEBUG_PAGE_ALLOC where several up to 2 ^ MAX_ORDER may be invalidated at once. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2014-09-30scsi_debug: deadlock between completions and surprise module removalDouglas Gilbert
A deadlock has been reported when the completion of SCSI commands (simulated by a timer) was surprised by a module removal. This patch removes one half of the offending locks around timer deletions. This fix is applied both to stop_all_queued() which is were the deadlock was discovered and stop_queued_cmnd() which has very similar logic. This patch should be applied both to the lk 3.17 tree and Christoph's drivers-for-3.18 tree. Tested-and-reported-by: Milan Broz <gmazyland@gmail.com> Signed-off-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30be2iscsi: check ip buffer before copyingMike Christie
Dan Carpenter found a issue where be2iscsi would copy the ip from userspace to the driver buffer before checking the len of the data being copied: http://marc.info/?l=linux-scsi&m=140982651504251&w=2 This patch just has us only copy what we the driver buffer can support. Cc: <stable@vger.kernel.org> Tested-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30iscsi_tcp: export port being usedMike Christie
This just has iscsi_tcp support ISCSI_PARAM_LOCAL_PORT which exports the local port being used by the iscsi connection. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30be2iscsi : Bump the driver versionJohn Soni Jose
Bump the driver version Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30be2iscsi : Fix kernel panic during reboot/shutdownJohn Soni Jose
In the reboot/shutdown path, workqueue was destroyed after the adapter resource were freed. The task associated with workqueue was getting executed after resources were freed. This lead to kernel panic. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30libfc: Replace rcu_assign_pointer() with RCU_INIT_POINTER()Andreea-Cristina Bernat
The uses of "rcu_assign_pointer()" are NULLing out the pointers. According to RCU_INIT_POINTER()'s block comment: "1. This use of RCU_INIT_POINTER() is NULLing out the pointer" it is better to use it instead of rcu_assign_pointer() because it has a smaller overhead. The following Coccinelle semantic patch was used: @@ @@ - rcu_assign_pointer + RCU_INIT_POINTER (..., NULL) Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com> Acked-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30fcoe: extend ethtool to FC port speed mappingChris Leech
add support for 20 Gbit and 40 Gbit links Signed-off-by: Chris Leech <cleech@redhat.com> Signed-off-by: Vasu Dev <vasu.dev@intel.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30powerpc/powernv: Override dma_get_required_mask()Gavin Shan
The dma_get_required_mask() function is used by some drivers to query the platform about what DMA mask is needed to cover all of memory. This is a bit of a strange semantic when we have to choose between IOMMU translation or bypass, but essentially what it means is "what DMA mask will give best performances". Currently, our IOMMU backend always returns a 32-bit mask here, we don't do anything special to it when we have bypass available. This causes some drivers to choose a 32-bit mask, thus losing the ability to use the bypass window, thinking this is more efficient. The problem was reported from the driver of following device: 0004:03:00.0 0107: 1000:0087 (rev 05) 0004:03:00.0 Serial Attached SCSI controller: LSI Logic / Symbios \ Logic SAS2308 PCI-Express Fusion-MPT SAS-2 (rev 05) This patch adds an override of that function in order to, instead, return a 64-bit mask whenever a bypass window is available in order for drivers to prefer this configuration. Reported-by: Murali N. Iyer <mniyer@us.ibm.com> Suggested-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/powernv: Fetch frozen PE on top levelGavin Shan
It should have been part of commit 1ad7a72c5 ("powerpc/eeh: Report frozen parent PE prior to child PE"). There are 2 ways to report EEH errors: proactively polling because of 0xFF's returned from PCI config or IO read, or interrupt driven event. We missed to report and handle parent frozen PE prior to child frozen PE for the later case on PowerNV platform. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Dump PCI config space for all child devicesGavin Shan
The PEs can be organized as nested. Current implementation doesn't dump PCI config space for subordinate devices of child PEs. However, the frozen PE could be caused by those subordinate devices of its child PEs. The patch dumps PCI config space for all subordinate devices of the problematic PE. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Emulate EEH recovery for VFIO devicesGavin Shan
When enabling EEH functionality on passed through devices (PE) with VFIO, the devices in the PE would be removed permanently from guest side. In that case, the PE remains frozen state. When returning PE to host, or restarting the guest again, we had mechanism unfreezing the PE by clearing PESTA/B frozen bits. However, that's not enough for some adapters, which are indicated as following "lspci" shows. Those adapters require hot reset on the parent bus to bring their firmware back to workable state. Otherwise, those adaptrs won't be operative and the host (for returning case) or the guest will fail to load the drivers for those adapters without exception. 0000:01:00.0 Ethernet controller: Emulex Corporation OneConnect \ 10Gb NIC (be3) (rev 02) 0000:01:00.0 0200: 19a2:0710 (rev 02) 0001:03:00.0 Ethernet controller: Emulex Corporation OneConnect \ NIC (Lancer) (rev 10) 0001:03:00.0 0200: 10df:e220 (rev 10) The patch adds mechanism to emulate EEH recovery (for hot reset on parent PCI bus) on 3 gates to fix the issue: open/release one adapter of the PE, enable EEH functionality on one adapter of the PE. Reported-by: Murilo Fossa Vicentini <muvic@br.ibm.com> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Tag reset state for user owned PEGavin Shan
PE would be owned by userland, which probably request PE reset done in host side. During the reset, we should drop the PCI config accesses to the PE with help of flag EEH_PE_RESET. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/powernv: Sync OpalPciResetScope with firmwareGavin Shan
The names of PCI reset scopes aren't sychronized with firmware. The patch fixes it. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/pseries: Decrease message level on EEH initializationGavin Shan
As Anton suggested, the patch decreases the message level on EEH initialization to avoid unnecessary messages if required. Also, we have unified hint if any of needful RTAS calls is missed, and then we can check /proc/device-tree to figure out the missed RTAS calls. Suggested-by: Anton Blanchard <anton@samba.org> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Block PCI config access during resetGavin Shan
Function pcibios_set_pcie_reset_state() can be used to do PCI reset. PCI config access during the reset usually causes EEH errors unexpectedly. In order to avoid the EEH error, the patch blocks PCI config access during reset with the help of flag EEH_PE_RESET, which is similar to what we did in EEH PE reset path. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Use eeh_unfreeze_pe()Gavin Shan
The patch uses eeh_unfreeze_pe() to replace the logic clearing frozen IO and DMA, in order to simplify the code. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Unfreeze PE on enabling EEH functionalityGavin Shan
When passing through PE to guest, that's possibly in frozen state. The driver for the pass-through devices on guest side can't be loaded successfully as reported. We already had one gate in eeh_dev_open() to clear PE frozen state accordingly, but that's not enough because the function is only called at QEMU startup for once. The patch adds another gate in eeh_pe_set_option() so that the PE frozen state can be cleared at QEMU restart time. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Fix improper condition in eeh_pci_enable()Gavin Shan
The function eeh_pci_enable() is called to apply various requests to one particular PE: Enabling EEH, Disabling EEH, Enabling IO, Enabling DMA, Freezing PE. When enabling IO or DMA on one specific PE, we need check that IO or DMA isn't enabled previously. But the condition used to do the check isn't completely correct because one PE would be in DMA frozen state with workable IO path, or vice versa. The patch fixes the improper condition. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Clear frozen device state in timeGavin Shan
The problem was reported by Carol: In the scenario of passing mlx4 adapter to guest, EEH error could be recovered successfully. When returning the device back to host, the driver (mlx4_core.ko) couldn't be loaded successfully because of error number -5 (-EIO) returned from mlx4_get_ownership(), which hits offlined PCI device. The root cause is that we missed to put the affected devices into normal state on clearing PE isolated state right after PE reset. The patch fixes above issue by putting the affected devices to normal state when clearing PE isolated state in eeh_pe_state_clear(). Cc: stable@vger.kernel.org Reported-by: Carol L. Soto <clsoto@us.ibm.com> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/powernv: Clear PAPR error injection registersGavin Shan
The frozen state on one specific PE is probably caused by error injection, which is done with help of PAPR error injection registers. According to the hardware spec, those registers should be cleared automatically after one-shot frozen PE. However, that's not always true, at least on P7IOC of Firebird-L. So we have to clear them before doing PE reset to avoid recursive EEH errors at recovery stage. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/powernv: Add PCI error injection debugfs entryMike Qiu
The patch adds debugfs file (/sys/kernel/debug/powerpc/PCIxxxx/ err_injct), which accepts following formated string, to support error injection. It will be used to support userland utility "errinjct" in future. "pe_no:0:function:address:mask" - 32-bits PCI errors "pe_no:1:function:address:mask" - 64-bits PCI errors Signed-off-by: Mike Qiu <qiudayu@linux.vnet.ibm.com> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Introduce eeh_ops::err_injectGavin Shan
The patch introduces eeh_ops::err_inject(), which allows to inject specified errors to indicated PE for testing purpose. The functionality isn't support on pSeries platform. On PowerNV, the functionality relies on OPAL API opal_pci_err_inject(). Signed-off-by: Mike Qiu <qiudayu@linux.vnet.ibm.com> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/powernv: Sync header with firmwareGavin Shan
The patch synchronizes firmware header file (opal.h) for PCI error injection. Signed-off-by: Mike Qiu <qiudayu@linux.vnet.ibm.com> Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2014-09-30powerpc/eeh: Clear frozen state on passing deviceGavin Shan
When passing through device, its PE might have been put into frozen state. One obvious example would be: the passed PE is forced to be offline because of hitting maximal allowed EEH errors in userland. In that case, the frozen state won't be cleared and then the PE is returned back to host, which might not have chance detecting and recovering from it. The patch adds more check when passing through device and clear the PE frozen state if necessary. Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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