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2016-10-14Revert "HID: i2c-hid: Add support for ACPI GPIO interrupts"David Arcari1-53/+18
This reverts commit a485923efbb8 ("HID: i2c-hid: Add support for ACPI GPIO interrupts") and commit a7d2bf25a483 ("HID: i2c-hid: Do not fail probing if gpiolib is not enabled") at the same time. Since commit c884fbd45214 ("gpio / ACPI: Add support for retrieving GpioInt resources from a device") i2c_core already set the IRQ by looking into the ACPI tree and retrieving the gpioInt. So we just have some boiler-plate here that is not needed anymore. The only downside effect here is that now we are not exiting early enough if the irq is set to -EPROBE_DEFER or any other error, but this is going to be fixed in the following patch. Signed-off-by: David Arcari <darcari@redhat.com> Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2016-10-06xen/x86: Update topology map for PV VCPUsBoris Ostrovsky1-0/+6
Early during boot topology_update_package_map() computes logical_pkg_ids for all present processors. Later, when processors are brought up, identify_cpu() updates these values based on phys_pkg_id which is a function of initial_apicid. On PV guests the latter may point to a non-existing node, causing logical_pkg_ids to be set to -1. Intel's RAPL uses logical_pkg_id (as topology_logical_package_id()) to index its arrays and therefore in this case will point to index 65535 (since logical_pkg_id is a u16). This could lead to either a crash or may actually access random memory location. As a workaround, we recompute topology during CPU bringup to reset logical_pkg_id to a valid value. (The reason for initial_apicid being bogus is because it is initial_apicid of the processor from which the guest is launched. This value is CPUID(1).EBX[31:24]) Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: stable@vger.kernel.org Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-10-06backlight: pwm_bl: Handle gpio that can sleepMaxime Ripard1-2/+2
Some backlight GPIOs might be connected to some i2c based expanders whose access might sleep. Since it's not in any critical path, use the cansleep variant of the GPIO API. Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-06backlight-tosa: Delete unnecessary assignment for the field "owner"Markus Elfring1-1/+0
The field "owner" is set by the core. Thus delete an unneeded initialisation. Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-06ARM: fix delaysRussell King1-1/+1
Commit 215e362dafed ("ARM: 8306/1: loop_udelay: remove bogomips value limitation") tried to increase the bogomips limitation, but in doing so messed up udelay such that it always gives about a 5% error in the delay, even if we use a timer. The calculation is: loops = UDELAY_MULT * us_delay * ticks_per_jiffy >> UDELAY_SHIFT Originally, UDELAY_MULT was ((UL(2199023) * HZ) >> 11) and UDELAY_SHIFT 30. Assuming HZ=100, us_delay of 1000 and ticks_per_jiffy of 1660000 (eg, 166MHz timer, 1ms delay) this would calculate: ((UL(2199023) * HZ) >> 11) * 1000 * 1660000 >> 30 => 165999 With the new values of 2047 * HZ + 483648 * HZ / 1000000 and 31, we get: (2047 * HZ + 483648 * HZ / 1000000) * 1000 * 1660000 >> 31 => 158269 which is incorrect. This is due to a typo - correcting it gives: (2147 * HZ + 483648 * HZ / 1000000) * 1000 * 1660000 >> 31 => 165999 i.o.w, the original value. Fixes: 215e362dafed ("ARM: 8306/1: loop_udelay: remove bogomips value limitation") Cc: <stable@vger.kernel.org> Reviewed-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
2016-10-06sparc: fixing ident and beautifying codenetmonk@netmonk.org1-28/+24
Good evening, Following LinuxCodingStyle documentation and with the help of Sam, fixed severals identation issues in the code, and few others cosmetic changes And last and i hope least fixing my name :) Signed-off-by : Dominique Carrel <netmonk@netmonk.org> Acked-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-06sparc64: Enable setting "relaxed ordering" in IOMMU mappingschris hyser2-1/+16
Enable relaxed ordering for memory writes in IOMMU TSB entry from dma_4v_alloc_coherent(), dma_4v_map_page() and dma_4v_map_sg() when dma_attrs DMA_ATTR_WEAK_ORDERING is set. This requires PCI IOMMU I/O Translation Services version 2.0 API. Many PCIe devices allow enabling relaxed-ordering (memory writes bypassing other memory writes) for various DMA buffers. A notable exception is the Mellanox mlx4 IB adapter. Due to the nature of x86 HW this appears to have little performance impact there. On SPARC HW however, this results in major performance degradation getting only about 3Gbps. Enabling RO in the IOMMU entries corresponding to mlx4 data buffers increases the throughput to about 13 Gbps. Orabug: 19245907 Signed-off-by: Chris Hyser <chris.hyser@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-06sparc64: Enable PCI IOMMU version 2 APIchris hyser1-10/+26
Enable Version 2 of the PCI IOMMU API needed for advanced features such as PCI Relaxed Ordering and greater than 2 GB DMA address space per root complex. Signed-off-by: Chris Hyser <chris.hyser@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-06sparc: migrate exception table users off module.h and onto extable.hPaul Gortmaker5-5/+5
These files were only including module.h for exception table related functions. We've now separated that content out into its own file "extable.h" so now move over to that and avoid all the extra header content in module.h that we don't really need to compile these files. Cc: "David S. Miller" <davem@davemloft.net> Cc: sparclinux@vger.kernel.org Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-05phy: micrel.c: Enable ksz9031 energy-detect power-down modeMike Looijmans1-0/+21
Set bit 0 in register 1C.23 to enable the EDPD feature of the KSZ9031 PHY. This reduces power consumption when the link is down. Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-05netfilter: merge fixup for "nf_tables_netdev: remove redundant ip_hdr assignment"Stephen Rothwell1-1/+0
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-05mm: filemap: fix mapping->nrpages double accounting in fuseJohannes Weiner1-1/+0
Commit 22f2ac51b6d6 ("mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page()") switched replace_page_cache() from raw radix tree operations to page_cache_tree_insert() but didn't take into account that the latter function, unlike the raw radix tree op, handles mapping->nrpages. As a result, that counter is bumped for each page replacement rather than balanced out even. The mapping->nrpages counter is used to skip needless radix tree walks when invalidating, truncating, syncing inodes without pages, as well as statistics for userspace. Since the error is positive, we'll do more page cache tree walks than necessary; we won't miss a necessary one. And we'll report more buffer pages to userspace than there are. The error is limited to fuse inodes. Fixes: 22f2ac51b6d6 ("mm: workingset: fix crash in shadow node shrinker caused by replace_page_cache_page()") Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Miklos Szeredi <miklos@szeredi.hu> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-05mm: filemap: don't plant shadow entries without radix tree nodeJohannes Weiner3-30/+36
When the underflow checks were added to workingset_node_shadow_dec(), they triggered immediately: kernel BUG at ./include/linux/swap.h:276! invalid opcode: 0000 [#1] SMP Modules linked in: isofs usb_storage fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_REJECT nf_reject_ipv6 soundcore wmi acpi_als pinctrl_sunrisepoint kfifo_buf tpm_tis industrialio acpi_pad pinctrl_intel tpm_tis_core tpm nfsd auth_rpcgss nfs_acl lockd grace sunrpc dm_crypt CPU: 0 PID: 20929 Comm: blkid Not tainted 4.8.0-rc8-00087-gbe67d60ba944 #1 Hardware name: System manufacturer System Product Name/Z170-K, BIOS 1803 05/06/2016 task: ffff8faa93ecd940 task.stack: ffff8faa7f478000 RIP: page_cache_tree_insert+0xf1/0x100 Call Trace: __add_to_page_cache_locked+0x12e/0x270 add_to_page_cache_lru+0x4e/0xe0 mpage_readpages+0x112/0x1d0 blkdev_readpages+0x1d/0x20 __do_page_cache_readahead+0x1ad/0x290 force_page_cache_readahead+0xaa/0x100 page_cache_sync_readahead+0x3f/0x50 generic_file_read_iter+0x5af/0x740 blkdev_read_iter+0x35/0x40 __vfs_read+0xe1/0x130 vfs_read+0x96/0x130 SyS_read+0x55/0xc0 entry_SYSCALL_64_fastpath+0x13/0x8f Code: 03 00 48 8b 5d d8 65 48 33 1c 25 28 00 00 00 44 89 e8 75 19 48 83 c4 18 5b 41 5c 41 5d 41 5e 5d c3 0f 0b 41 bd ef ff ff ff eb d7 <0f> 0b e8 88 68 ef ff 0f 1f 84 00 RIP page_cache_tree_insert+0xf1/0x100 This is a long-standing bug in the way shadow entries are accounted in the radix tree nodes. The shrinker needs to know when radix tree nodes contain only shadow entries, no pages, so node->count is split in half to count shadows in the upper bits and pages in the lower bits. Unfortunately, the radix tree implementation doesn't know of this and assumes all entries are in node->count. When there is a shadow entry directly in root->rnode and the tree is later extended, the radix tree implementation will copy that entry into the new node and and bump its node->count, i.e. increases the page count bits. Once the shadow gets removed and we subtract from the upper counter, node->count underflows and triggers the warning. Afterwards, without node->count reaching 0 again, the radix tree node is leaked. Limit shadow entries to when we have actual radix tree nodes and can count them properly. That means we lose the ability to detect refaults from files that had only the first page faulted in at eviction time. Fixes: 449dd6984d0e ("mm: keep page cache radix tree nodes in check") Signed-off-by: Johannes Weiner <hannes@cmpxchg.org> Reported-and-tested-by: Linus Torvalds <torvalds@linux-foundation.org> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: stable@vger.kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-10-05DT: irqchip: renesas-irqc: document R8A7743/5 supportSergei Shtylyov1-1/+3
Renesas RZ/G SoC have the R-Car gen2 compatible IRQC interrupt controllers. Document RZ/G1[ME] (also known as R8A774[35]) SoC bindings. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Rob Herring <robh@kernel.org>
2016-10-05dt-bindings: Add Keith&Koep vendor prefixMarek Vasut1-0/+1
Add vendor prefix for Keith&Koep GmbH , http://keith-koep.com/en/ Signed-off-by: Marek Vasut <marex@denx.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Shawn Guo <shawnguo@kernel.org> [robh: fix alphabetizing] Signed-off-by: Rob Herring <robh@kernel.org>
2016-10-05xen/x86: Initialize per_cpu(xen_vcpu, 0) a little earlierBoris Ostrovsky1-1/+2
xen_cpuhp_setup() calls mutex_lock() which, when CONFIG_DEBUG_MUTEXES is defined, ends up calling xen_save_fl(). That routine expects per_cpu(xen_vcpu, 0) to be already initialized. Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com> Reported-by: Sander Eikelenboom <linux@eikelenboom.it> Signed-off-by: David Vrabel <david.vrabel@citrix.com>
2016-10-05async_pq_val: fix DMA memory leakJustin Maggard1-4/+4
Add missing dmaengine_unmap_put(), so we don't OOM during RAID6 sync. Fixes: 1786b943dad0 ("async_pq_val: convert to dmaengine_unmap_data") Signed-off-by: Justin Maggard <jmaggard@netgear.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Vinod Koul <vinod.koul@intel.com>
2016-10-04mlxsw: switchx2: Fix misuse of hard_header_lenYotam Gigi1-1/+1
In order to specify that the mlxsw switchx2 driver needs additional headroom for packets, there have been use of the hard_header_len field of the netdevice struct. This commit changes that to use needed_headroom instead, as this is the correct way to do that. Fixes: 31557f0f9755 ("mlxsw: Introduce Mellanox SwitchX-2 ASIC support") Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Acked-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-04mlxsw: spectrum: Fix misuse of hard_header_lenYotam Gigi1-1/+1
In order to specify that the mlxsw spectrum driver needs additional headroom for packets, there have been use of the hard_header_len field of the netdevice struct. This commit changes that to use needed_headroom instead, as this is the correct way to do that. Fixes: 56ade8fe3fe1 ("mlxsw: spectrum: Add initial support for Spectrum ASIC") Signed-off-by: Yotam Gigi <yotamg@mellanox.com> Acked-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-10-04x86/PCI: VMD: Move VMD driver to drivers/pci/hostKeith Busch5-15/+17
Move the driver source and Kconfig to the PCI host bridge drivers directory and move the config option to a more appropriate sub-menu instead of occupying the top-level location. Update the Kconfig option with the X86_64 dependency that was implicitly included from the previous location, and add information about the module name when built as a loadable module. Signed-off-by: Keith Busch <keith.busch@intel.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> CC: Jon Derrick <jonathan.derrick@intel.com>
2016-10-04PCI: rockchip: Fix wrong transmitted FTS countShawn Lin1-0/+10
If the expected number of FTS aren't received by RC when exiting from L0s, the LTSSM will fall into recover state, which means it will need to send TS for retraining which makes the latency of exiting from L0s a little longer than expected. This issue is caused by an incorrect reset value of FTS count on PLC1 register (offset 0x4). The expected value for Gen1/2 should be more than 240 and we may leave a little margin here. Fix this before starting Gen1 training which will make TS1 contain the correct FTS count. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-10-04PCI: rockchip: Improve the deassert sequence of four reset pinsShawn Lin1-6/+10
Per TRM, we need to deassert the four reset pins simultaneously. Currently the reset framework doesn't support that so we did it one by one. It seems no side effect found but it does impact the state machine of controller, so sometimes the change speed bit is not set when sending training sequence from recover state. After the silicon RTL review from SoC guys, we don't need to do the sequence recommended by TRM, and could just move the deassert of mgmt_sticky_rst to the first place. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2016-10-04PCI: rockchip: Increase the Max Credit update intervalRajat Jain1-0/+17
Increase the likelihood of link state to automatically go to L1 and save some power. The default credit update interval of 7.5 us results in the rootport sending UpdateFC-P and UpdateFC-NP packets too often, thus resulting in the link never going to L1, and always staying in L0/L0s. The value 24 us was chosen after some experiments and peeking over the PCIe bus to see that we do enter L1 substate when there is not enough traffic on the PCIe bus. Signed-off-by: Rajat Jain <rajatja@google.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Shawn Lin <shawn.lin@rock-chips.com>
2016-10-04PCI: rcar: Try increasing PCIe link speed to 5 GT/s at bootSergei Shtylyov1-0/+66
The PCIe link speed is initially set to 2.5 GT/s. Try to increase the link speed to 5 GT/s. Based on original patch by Grigory Kletsko <grigory.kletsko@cogentembedded.com>. [bhelgaas: remove "Trying speed up" message, remove unused SPCHG] Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Simon Horman <horms+renesas@verge.net.au>
2016-10-04mfd: arizona: Handle probe deferral for reset GPIOCharles Keepax1-4/+9
The Arizona CODECs will generally function correctly without a reset line although it is strongly advised to have one, as such we do allow the system to boot if the reset gpio is missing or incorrectly specified. However we should fail probe if we get a probe deferral request, this patch adds handling for this case. Reported-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com> Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: arizona: Remove arizona_of_get_named_gpio helper functionCharles Keepax2-23/+7
This function is only used in a single place and no new users will be added as all the devices other required GPIOs are already handled. As such just merge the code back into the calling function. Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
2016-10-04mfd: arizona: Add DT options for max_channels_clocked and PDM speaker configRichard Fitzgerald2-0/+48
This patch adds DT settings for the max_channels_clocked, spk_fmt and spk_mute pdata. Signed-off-by: Richard Fitzgerald <rf@opensource.wolfsonmicro.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: twl6040: Register child device for twl6040-pdmclkPeter Ujfalusi3-1/+7
The McPDM in OMAP4/5 is using the pdmclk from twl6040 as functional clock. The twl6040-pdmclk driver provides a clock which can be used to make sure that the pdmclk is active when the McPDM is in use. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: cros_ec_spi: Remove unused variable 'request'Lee Jones1-2/+0
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: omap-usb-host: Return value is not 'const int'Lee Jones1-1/+1
Change from 'const int' to just 'int'. Cc: <robh+dt@kernel.org> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: ab8500-debugfs: Remove 'weak' function suspend_test_wake_cause_interrupt_is_mine()Lee Jones1-9/+1
There are no other functions which can over-ride it. Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: ab8500-debugfs: Remove ab8500_dump_all_banks_to_mem()Lee Jones1-54/+0
Doesn't appear to be used. No call sites exist. Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: db8500-prcmu: Remove unused *prcmu_set_ddr_opp() callsLee Jones3-34/+0
There are no call sites for these functions. Strip them out. Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: ab8500-debugfs: Prevent initialised field from being over-writtenLee Jones2-29/+23
Due to the lack of parity in the way array fields have been named/ numbered, a mistake was made where more debug fields were declared than actually existed. In doing so, 2 fields were added, which although unclear, were already declared in the array. The result was that the latter declarations trashed the former ones. This patch places the array back in the correct order and removes the offending NULL entries. While we're at it, let's ensure this doesn't happen again by naming each field properly and add a new *_LAST define to describe how many fields there should be. Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: max8997-irq: 'inline' should be at the beginning of the declarationLee Jones1-1/+1
Reported by [-Wold-style-declaration]. Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: rk808: Fix RK818_IRQ_DISCHG_ILIM initializerArnd Bergmann1-1/+1
When building with -Woverride-init, we get a warning about an incorrect initializer: drivers/mfd/rk808.c:244:8: error: initialized field overwritten [-Werror=override-init] [RK818_IRQ_DISCHG_ILIM] = { This is clearly a mistake, as both RK818_IRQ_DISCHG_ILIM and RK818_IRQ_USB_OV are defined as '7', but they refer to different register bits. Changing RK818_IRQ_DISCHG_ILIM to 15 is consistent with how all other 14 interrupts are handled here, so I'm assuming this is what it should have been. Fixes: 2eedcbfc0612 ("mfd: rk808: Add RK818 support") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Andy Yan <andy.yan@rock-chips.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: tps65217: Fix nonstandard declarationArnd Bergmann1-1/+1
The tps65217 gained a new warning when building with W=1: drivers/mfd/tps65217.c:85:1: error: 'inline' is not at beginning of declaration [-Werror=old-style-declaration] This fixes it by putting the 'inline' modifier before 'const'. Fixes: 262d5cc6ceb2 ("mfd: tps65217: Add support for IRQs") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: lp873x: Remove unused mutex lock from struct lp873xAxel Lin2-3/+0
The mutex is not used, so remove it. Signed-off-by: Axel Lin <axel.lin@ingics.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: atmel-hlcdc: Do not sleep in atomic contextBoris Brezillon1-2/+3
readl_poll_timeout() calls usleep_range(), but regmap_atmel_hlcdc_reg_write() is called in atomic context (regmap spinlock held). Replace the readl_poll_timeout() call by readl_poll_timeout_atomic(). Cc: <stable@vger.kernel.org> Fixes: ea31c0cf9b07 ("mfd: atmel-hlcdc: Implement config synchronization") Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: exynos-lpass: Mark PM functions as __maybe_unusedArnd Bergmann1-4/+2
The newly added exynos lpass driver produces a build warning when CONFIG_PM is disabled since the only callers of exynos_lpass_disable are under an #ifdef: drivers/mfd/exynos-lpass.c:93:13: error: 'exynos_lpass_disable' defined but not used [-Werror=unused-function] static void exynos_lpass_disable(struct exynos_lpass *lpass) This removes the #ifdef and replaces it with __maybe_unused annotations so the compiler can leave out the unused code silently with less room for mistakes. Fixes: 36c26760bba8 ("mfd: Add Samsung Exynos Low Power Audio Subsystem driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: intel-lpss: Add default I2C device properties for Apollo LakeJarkko Nikula2-9/+33
Default I2C device properties for Intel Broxton, especially SDA hold time may not be enough on Intel Apollo Lake. These properties are used in case we don't get timing parameters from ACPI. The default SDA hold time for Broxton may fail with arbitration lost errors on Apollo Lake: i2c_designware i2c_designware.1: i2c_dw_handle_tx_abort: lost arbitration Fix this by using different default device properties on Apollo Lake than Broxton. Reported-by: Paul Liu <paul.liu@canonical.com> Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=156181 Signed-off-by: Jarkko Nikula <jarkko.nikula@linux.intel.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: twl-core: Make it explicitly non-modularPaul Gortmaker1-8/+1
The Kconfig currently controlling compilation of this code is: drivers/mfd/Kconfig:config TWL4030_CORE drivers/mfd/Kconfig: bool "TI TWL4030/TWL5030/TWL6030/TPS659x0 Support" ...meaning that it currently is not being built as a module by anyone. Lets remove what modular code that we can, so that when reading the driver there is less doubt that it is builtin-only. Note that we can't remove the twl_remove() itself ; it is still used by the probe unwind routine. So we leave it linked into the .remove as well, even though it will most likely never be called via that path from an unbind. Since module_i2c_driver() uses the same init level priority as builtin_i2c_driver() the init ordering remains unchanged with this commit. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: sun6i-prcm: Make it explicitly non-modularPaul Gortmaker1-6/+2
The Kconfig currently controlling compilation of this code is: drivers/mfd/Kconfig:config MFD_SUN6I_PRCM drivers/mfd/Kconfig: bool "Allwinner A31 PRCM controller" ...meaning that it currently is not being built as a module by anyone. Lets remove the couple traces of modularity so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: smsc-ece1099: Make it explicitly non-modularPaul Gortmaker1-9/+2
The Kconfig currently controlling compilation of this code is: drivers/mfd/Kconfig:config MFD_SMSC drivers/mfd/Kconfig: bool "SMSC ECE1099 series chips" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since module_init was not in use by this code, the init ordering remains unchanged with this commit. We replace module.h with init.h and delete an unused moduleparam.h include. Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Cc: Sourav Poddar <sourav.poddar@ti.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: intel_msic: Make it explicitly non-modularPaul Gortmaker1-7/+2
The Kconfig currently controlling compilation of this code is: drivers/mfd/Kconfig:config MFD_INTEL_MSIC drivers/mfd/Kconfig: bool "Intel MSIC ...meaning that it currently is not being built as a module by anyone. Lets remove the couple instances of module references, so that when reading the driver there is no doubt it is builtin-only. Since module_platform_driver() uses the same init level priority as builtin_platform_driver() the init ordering remains unchanged with this commit. We also delete the MODULE_LICENSE tag etc. since all that information is already contained at the top of the file in the comments. Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: as3722: Convert MFD_AS3722 from bool to tristatePaul Gortmaker1-1/+1
The Kconfig currently controlling compilation of this code is: drivers/mfd/Kconfig:config MFD_AS3722 drivers/mfd/Kconfig: bool "ams AS3722 Power Management IC" ...meaning that it currently is not being built as a module by anyone. In response to an earlier patch set suggesting removal of the unused modular code, Laxman suggested that this driver be instead moved to tristate. We do that here, and confirm it can build and modpost as a tristate. However there remains to be runtime testing in order to ensure this change is 100% functional for "=m". Cc: Florian Lobmaier <florian.lobmaier@ams.com> Cc: Laxman Dewangan <ldewangan@nvidia.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: altera-a10sr: Make it explicitly non-modularPaul Gortmaker1-8/+6
The Kconfig currently controlling compilation of this code is: drivers/mfd/Kconfig:config MFD_ALTERA_A10SR drivers/mfd/Kconfig: bool "Altera Arria10 DevKit System Resource chip" ...meaning that it currently is not being built as a module by anyone. Lets remove the modular code that is essentially orphaned, so that when reading the driver there is no doubt it is builtin-only. Since builtin_driver() uses the same init level priority as module_spi_driver() the init ordering remains unchanged with this commit. [Note that there is no builtin_spi_driver macro, so we open-code what it would be via builtin_driver().] Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code. We also delete the MODULE_LICENSE tag etc. since all that information was (or is now) contained at the top of the file in the comments. Cc: Thor Thayer <tthayer@opensource.altera.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: tps65217: Add power button as subdeviceMarcin Niestroj1-0/+10
Add tps65217 power buttor subdevice with assigned IRQ resources. Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com> Acked-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: tps65217: Add support for IRQsMarcin Niestroj3-8/+200
Add support for handling IRQs: power button, AC and USB power state changes. Mask and interrupt bits are shared within one register, which prevents us to use regmap_irq implementation. New irq_domain is created in order to add interrupt handling for each tps65217's subsystem. IRQ resources have been added for charger subsystem to be able to notify about AC and USB state changes. Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com> Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Tested-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
2016-10-04mfd: sm501: Constify gpio_chip structuresJulia Lawall1-1/+1
These structures are only used to copy into other structures, so declare them as const. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable optional_qualifier@ identifier i; position p; @@ static struct gpio_chip i@p = { ... }; @ok@ identifier r.i; expression e; position p; @@ e = i@p; @bad@ position p != {r.p,ok.p}; identifier r.i; struct gpio_chip e; @@ e@i@p @depends on !bad disable optional_qualifier@ identifier r.i; @@ static +const struct gpio_chip i = { ... }; // </smpl> Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr> Signed-off-by: Lee Jones <lee.jones@linaro.org>
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