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2018-08-20i2c: designware: Add SPDX license tagAndy Shevchenko7-94/+7
Replace short statement in comment with proper SPDX license tag. Note, for i2c-desingware-slave.c the identifier is chosen in accordance with MODULE_LICENSE() macro since it is visible to user. Another point to this choice is that the header seems to be copy'n'paste from the other file of this very driver. Acked-by: Luis Oliveira <[email protected]> Signed-off-by: Andy Shevchenko <[email protected]> Acked-by: Jarkko Nikula <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-08i2c: designware: Convert to use struct i2c_timingsAndy Shevchenko3-34/+33
Instead of using custom variables and parser, convert the driver to use the ones provided by I2C core. No functional change intended. Signed-off-by: Andy Shevchenko <[email protected]> Reviewed-by: Alexandre Belloni <[email protected]> Tested-by: Alexandre Belloni <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-08i2c: core: Parse SDA hold time from firmwareAndy Shevchenko2-0/+4
There are two drivers already using the SDA hold time setting. It might be more in the future, thus, make I2C core to parse the setting for us if provided by firmware. Signed-off-by: Andy Shevchenko <[email protected]> Tested-by: Alexandre Belloni <[email protected]> Reviewed-by: Alexandre Belloni <[email protected]> Acked-by: Ludovic Desroches <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-08i2c: designware-pcidrv: Mark expected switch fall-throughGustavo A. R. Silva1-0/+1
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by: Gustavo A. R. Silva <[email protected]> Acked-by: Andy Shevchenko <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-08i2c: amd8111: Mark expected switch fall-throughGustavo A. R. Silva1-0/+1
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by: Gustavo A. R. Silva <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04i2c: sh_mobile: use core to detect 'no zero length read' quirkWolfram Sang1-5/+5
And don't reimplement in the driver. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Niklas Söderlund <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04i2c: xlr: use core to detect 'no zero length' quirkWolfram Sang1-6/+5
And don't reimplement in the driver. Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04i2c: rcar: use core to detect 'no zero length' quirkWolfram Sang1-7/+6
And don't reimplement in the driver. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Niklas Söderlund <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04i2c: stu300: use core to detect 'no zero length' quirkWolfram Sang1-6/+6
And don't reimplement in the driver. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Linus Walleij <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04i2c: pmcmsp: use core to detect 'no zero length' quirkWolfram Sang1-16/+1
And don't reimplement in the driver. Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04i2c: mxs: use core to detect 'no zero length' quirkWolfram Sang1-3/+5
And don't reimplement in the driver. Signed-off-by: Wolfram Sang <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04i2c: designware-master: use core to detect 'no zero length' quirkWolfram Sang1-7/+5
And don't reimplement in the driver. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Tested-by: Jarkko Nikula <[email protected]> Acked-by: Jarkko Nikula <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04i2c: quirks: add zero length checksWolfram Sang2-0/+10
Some adapters do not support a message length of 0. Add this as a quirk so drivers don't have to open code it. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Niklas Söderlund <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Tested-by: Jarkko Nikula <[email protected]> Acked-by: Jarkko Nikula <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04i2c: aspeed: Add an explicit type casting for *get_clk_reg_valJae Hyun Yoo1-1/+1
This commit fixes this sparse warning: drivers/i2c/busses/i2c-aspeed.c:875:38: warning: incorrect type in assignment (different modifiers) drivers/i2c/busses/i2c-aspeed.c:875:38: expected unsigned int ( *get_clk_reg_val )( ... ) drivers/i2c/busses/i2c-aspeed.c:875:38: got void const *const data Reported-by: Wolfram Sang <[email protected]> Signed-off-by: Jae Hyun Yoo <[email protected]> Reviewed-by: Brendan Higgins <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04Merge branch 'i2c-mux/for-next' of https://github.com/peda-r/i2c-mux into ↵Wolfram Sang1-13/+11
i2c/for-4.19 Simplify the probe function of the pca954x driver
2018-08-04i2c: Add Actions Semiconductor Owl family S900 I2C driverManivannan Sadhasivam3-0/+503
Add Actions Semiconductor Owl family S900 I2C driver. Signed-off-by: Manivannan Sadhasivam <[email protected]> Acked-by: Peter Rosin <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-08-04dt-bindings: i2c: Add binding for Actions Semiconductor Owl I2C controllerManivannan Sadhasivam1-0/+27
Add devicetree binding for Actions Semiconductor Owl I2C controller Signed-off-by: Manivannan Sadhasivam <[email protected]> Reviewed-by: Rob Herring <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-07-31i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controllerKarthikeyan Ramasubramanian4-0/+695
This bus driver supports the GENI based i2c hardware controller in the Qualcomm SOCs. The Qualcomm Generic Interface (GENI) is a programmable module supporting a wide range of serial interfaces including I2C. The driver supports FIFO mode and DMA mode of transfer and switches modes dynamically depending on the size of the transfer. Signed-off-by: Karthikeyan Ramasubramanian <[email protected]> Signed-off-by: Sagar Dharia <[email protected]> Signed-off-by: Girish Mahadevan <[email protected]> Reviewed-by: Douglas Anderson <[email protected]> Reviewed-by: Stephen Boyd <[email protected]> Tested-by: Stephen Boyd <[email protected]> [wsa: squashed the MAINTAINER addition and a RPM fix by Evan Green] Signed-off-by: Wolfram Sang <[email protected]>
2018-07-30i2c: mux: pca954x: use helper variable in probeLinus Walleij1-13/+11
This creates a struct device *dev helper variable in probe() which IMO makes the code less cluttered and easier to read. Also rename the of_node veriable to the common shortform "np" (node pointer). Signed-off-by: Linus Walleij <[email protected]> [peda: slightly edited commit message and removed some surplus newlines] Signed-off-by: Peter Rosin <[email protected]>
2018-07-29Merge tag 'at24-4.19-updates-for-wolfram' of ↵Wolfram Sang358-1722/+3093
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-4.19 at24: updates for v4.19 New property: 'address-width' which allows to specify the number of addressing bits. Up until now we only could choose one of the defined models and rely on the flags specified in its corresponding chip data structure.
2018-07-25eeprom: at24: Add support for address-width propertyAlan Chiang1-0/+17
Provide a flexible way to determine the addressing bits of eeprom. Pass the addressing bits to driver through address-width property. Signed-off-by: Alan Chiang <[email protected]> Signed-off-by: Andy Yeh <[email protected]> Signed-off-by: Bartosz Golaszewski <[email protected]>
2018-07-25dt-bindings: at24: Add address-width propertyAlan Chiang1-0/+2
Currently the only way to use a variant of a supported model with a different address width is to define a new compatible string and the corresponding chip data structure. Provide a flexible way to specify the size of the address pointer by defining a new property: address-width. Signed-off-by: Alan Chiang <[email protected]> Signed-off-by: Andy Yeh <[email protected]> Acked-by: Sakari Ailus <[email protected]> Reviewed-by: Rob Herring <[email protected]> [Bartosz: fixed the commit message] Signed-off-by: Bartosz Golaszewski <[email protected]>
2018-07-23i2c: rcar: handle RXDMA HW behaviour on Gen3Wolfram Sang1-3/+51
On Gen3, we can only do RXDMA once per transfer reliably. For that, we must reset the device, then we can have RXDMA once. This patch implements this. When there is no reset controller or the reset fails, RXDMA will be blocked completely. Otherwise, it will be disabled after the first RXDMA transfer. Based on a commit from the BSP by Hiromitsu Yamasaki, yet completely refactored to handle multiple read messages within one transfer. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-07-22Linux 4.18-rc6Linus Torvalds1-1/+1
2018-07-22Merge tag 'nvme-for-4.18' of git://git.infradead.org/nvmeLinus Torvalds2-34/+41
Pull NVMe fixes from Christoph Hellwig: - fix a regression in 4.18 that causes a memory leak on probe failure (Keith Bush) - fix a deadlock in the passthrough ioctl code (Scott Bauer) - don't enable AENs if not supported (Weiping Zhang) - fix an old regression in metadata handling in the passthrough ioctl code (Roland Dreier) * tag 'nvme-for-4.18' of git://git.infradead.org/nvme: nvme: fix handling of metadata_len for NVME_IOCTL_IO_CMD nvme: don't enable AEN if not supported nvme: ensure forward progress during Admin passthru nvme-pci: fix memory leak on probe failure
2018-07-22Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds8-29/+14
Pull vfs fixes from Al Viro: "Fix several places that screw up cleanups after failures halfway through opening a file (one open-coding filp_clone_open() and getting it wrong, two misusing alloc_file()). That part is -stable fodder from the 'work.open' branch. And Christoph's regression fix for uapi breakage in aio series; include/uapi/linux/aio_abi.h shouldn't be pulling in the kernel definition of sigset_t, the reason for doing so in the first place had been bogus - there's no need to expose struct __aio_sigset in aio_abi.h at all" * 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: aio: don't expose __aio_sigset in uapi ocxlflash_getfile(): fix double-iput() on alloc_file() failures cxl_getfile(): fix double-iput() on alloc_file() failures drm_mode_create_lease_ioctl(): fix open-coded filp_clone_open()
2018-07-22alpha: fix osf_wait4() breakageAl Viro2-5/+2
kernel_wait4() expects a userland address for status - it's only rusage that goes as a kernel one (and needs a copyout afterwards) [ Also, fix the prototype of kernel_wait4() to have that __user annotation - Linus ] Fixes: 92ebce5ac55d ("osf_wait4: switch to kernel_wait4()") Cc: [email protected] # v4.13+ Signed-off-by: Al Viro <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2018-07-21Merge tag 'armsoc-fixes' of ↵Linus Torvalds3-7/+25
git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC fixes from Olof Johansson: - Fix interrupt type on ethernet switch for i.MX-based RDU2 - GPC on i.MX exposed too large a register window which resulted in userspace being able to crash the machine. - Fixup of bad merge resolution moving GPIO DT nodes under pinctrl on droid4. * tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: ARM: dts: imx6: RDU2: fix irq type for mv88e6xxx switch soc: imx: gpc: restrict register range for regmap access ARM: dts: omap4-droid4: fix dts w.r.t. pwm
2018-07-21Merge branch 'x86-urgent-for-linus' of ↵Linus Torvalds1-3/+0
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 fix from Ingo Molnar: "A single fix for a MCE-polling regression, which prevented the disabling of polling" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/MCE: Remove min interval polling limitation
2018-07-21Merge branch 'x86-pti-urgent-for-linus' of ↵Linus Torvalds3-9/+10
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 pti fixes from Ingo Molnar: "An APM fix, and a BTS hardware-tracing fix related to PTI changes" * 'x86-pti-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/apm: Don't access __preempt_count with zeroed fs x86/events/intel/ds: Fix bts_interrupt_threshold alignment
2018-07-21Merge branch 'sched-urgent-for-linus' of ↵Linus Torvalds2-2/+15
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull scheduler fixes from Ingo Molnar: "Two fixes: a stop-machine preemption fix and a SCHED_DEADLINE fix" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/deadline: Fix switched_from_dl() warning stop_machine: Disable preemption when waking two stopper threads
2018-07-21Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds4-8/+84
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull core kernel fixes from Ingo Molnar: "This is mostly the copy_to_user_mcsafe() related fixes from Dan Williams, and an ORC fix for Clang" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/asm/memcpy_mcsafe: Fix copy_to_user_mcsafe() exception handling lib/iov_iter: Fix pipe handling in _copy_to_iter_mcsafe() lib/iov_iter: Document _copy_to_iter_flushcache() lib/iov_iter: Document _copy_to_iter_mcsafe() objtool: Use '.strtab' if '.shstrtab' doesn't exist, to support ORC tables on Clang
2018-07-21Merge tag 'powerpc-4.18-4' of ↵Linus Torvalds8-14/+52
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc fixes from Michael Ellerman: "Two regression fixes, one for xmon disassembly formatting and the other to fix the E500 build. Two commits to fix a potential security issue in the VFIO code under obscure circumstances. And finally a fix to the Power9 idle code to restore SPRG3, which is user visible and used for sched_getcpu(). Thanks to: Alexey Kardashevskiy, David Gibson. Gautham R. Shenoy, James Clarke" * tag 'powerpc-4.18-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/powernv: Fix save/restore of SPRG3 on entry/exit from stop (idle) powerpc/Makefile: Assemble with -me500 when building for E500 KVM: PPC: Check if IOMMU page is contained in the pinned physical page vfio/spapr: Use IOMMU pageshift rather than pagesize powerpc/xmon: Fix disassembly since printf changes
2018-07-21Merge tag 'for-4.18-rc5-tag' of ↵Linus Torvalds1-2/+5
git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux Pull btrfs fix from David Sterba: "A fix of a corruption regarding fsync and clone, under some very specific conditions explained in the patch. The fix is marked for stable 3.16+ so I'd like to get it merged now given the impact" * tag 'for-4.18-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux: Btrfs: fix file data corruption after cloning a range and fsync
2018-07-21mm: make vm_area_alloc() initialize core fieldsLinus Torvalds7-26/+17
Like vm_area_dup(), it initializes the anon_vma_chain head, and the basic mm pointer. The rest of the fields end up being different for different users, although the plan is to also initialize the 'vm_ops' field to a dummy entry. Signed-off-by: Linus Torvalds <[email protected]>
2018-07-21mm: make vm_area_dup() actually copy the old vma dataLinus Torvalds3-11/+7
.. and re-initialize th eanon_vma_chain head. This removes some boiler-plate from the users, and also makes it clear why it didn't need use the 'zalloc()' version. Signed-off-by: Linus Torvalds <[email protected]>
2018-07-21mm: use helper functions for allocating and freeing vm_area structsLinus Torvalds7-27/+44
The vm_area_struct is one of the most fundamental memory management objects, but the management of it is entirely open-coded evertwhere, ranging from allocation and freeing (using kmem_cache_[z]alloc and kmem_cache_free) to initializing all the fields. We want to unify this in order to end up having some unified initialization of the vmas, and the first step to this is to at least have basic allocation functions. Right now those functions are literally just wrappers around the kmem_cache_*() calls. This is a purely mechanical conversion: # new vma: kmem_cache_zalloc(vm_area_cachep, GFP_KERNEL) -> vm_area_alloc() # copy old vma kmem_cache_alloc(vm_area_cachep, GFP_KERNEL) -> vm_area_dup(old) # free vma kmem_cache_free(vm_area_cachep, vma) -> vm_area_free(vma) to the point where the old vma passed in to the vm_area_dup() function isn't even used yet (because I've left all the old manual initialization alone). Signed-off-by: Linus Torvalds <[email protected]>
2018-07-21Merge branch 'akpm' (patches from Andrew)Linus Torvalds5-9/+20
Merge fixes from Andrew Morton: "5 fixes" * emailed patches from Andrew Morton <[email protected]>: mm: memcg: fix use after free in mem_cgroup_iter() mm/huge_memory.c: fix data loss when splitting a file pmd fat: fix memory allocation failure handling of match_strdup() MAINTAINERS: Peter has moved mm/memblock: add missing include <linux/bootmem.h>
2018-07-21mm: memcg: fix use after free in mem_cgroup_iter()Jing Xia1-1/+1
It was reported that a kernel crash happened in mem_cgroup_iter(), which can be triggered if the legacy cgroup-v1 non-hierarchical mode is used. Unable to handle kernel paging request at virtual address 6b6b6b6b6b6b8f ...... Call trace: mem_cgroup_iter+0x2e0/0x6d4 shrink_zone+0x8c/0x324 balance_pgdat+0x450/0x640 kswapd+0x130/0x4b8 kthread+0xe8/0xfc ret_from_fork+0x10/0x20 mem_cgroup_iter(): ...... if (css_tryget(css)) <-- crash here break; ...... The crashing reason is that mem_cgroup_iter() uses the memcg object whose pointer is stored in iter->position, which has been freed before and filled with POISON_FREE(0x6b). And the root cause of the use-after-free issue is that invalidate_reclaim_iterators() fails to reset the value of iter->position to NULL when the css of the memcg is released in non- hierarchical mode. Link: http://lkml.kernel.org/r/[email protected] Fixes: 6df38689e0e9 ("mm: memcontrol: fix possible memcg leak due to interrupted reclaim") Signed-off-by: Jing Xia <[email protected]> Acked-by: Michal Hocko <[email protected]> Cc: Johannes Weiner <[email protected]> Cc: Vladimir Davydov <[email protected]> Cc: <[email protected]> Cc: Shakeel Butt <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2018-07-21mm/huge_memory.c: fix data loss when splitting a file pmdHugh Dickins1-0/+2
__split_huge_pmd_locked() must check if the cleared huge pmd was dirty, and propagate that to PageDirty: otherwise, data may be lost when a huge tmpfs page is modified then split then reclaimed. How has this taken so long to be noticed? Because there was no problem when the huge page is written by a write system call (shmem_write_end() calls set_page_dirty()), nor when the page is allocated for a write fault (fault_dirty_shared_page() calls set_page_dirty()); but when allocated for a read fault (which MAP_POPULATE simulates), no set_page_dirty(). Link: http://lkml.kernel.org/r/[email protected] Fixes: d21b9e57c74c ("thp: handle file pages in split_huge_pmd()") Signed-off-by: Hugh Dickins <[email protected]> Reported-by: Ashwin Chaugule <[email protected]> Reviewed-by: Yang Shi <[email protected]> Reviewed-by: Kirill A. Shutemov <[email protected]> Cc: "Huang, Ying" <[email protected]> Cc: <[email protected]> [4.8+] Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2018-07-21fat: fix memory allocation failure handling of match_strdup()OGAWA Hirofumi1-7/+13
In parse_options(), if match_strdup() failed, parse_options() leaves opts->iocharset in unexpected state (i.e. still pointing the freed string). And this can be the cause of double free. To fix, this initialize opts->iocharset always when freeing. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: OGAWA Hirofumi <[email protected]> Reported-by: [email protected] Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2018-07-21MAINTAINERS: Peter has movedPeter Senna Tschudin1-1/+1
Update my E-mail address in the MAINTAINERS file. Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Peter Senna Tschudin <[email protected]> Reviewed-by: Sebastian Reichel <[email protected]> Acked-by: Martyn Welch <[email protected]> Cc: David S. Miller <[email protected]> Cc: Mauro Carvalho Chehab <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Randy Dunlap <[email protected]> Cc: Martin Donnelly <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2018-07-21mm/memblock: add missing include <linux/bootmem.h>Mathieu Malaterre1-0/+3
Commit 26f09e9b3a06 ("mm/memblock: add memblock memory allocation apis") introduced two new function definitions: memblock_virt_alloc_try_nid_nopanic() memblock_virt_alloc_try_nid() and commit ea1f5f3712af ("mm: define memblock_virt_alloc_try_nid_raw") introduced the following function definition: memblock_virt_alloc_try_nid_raw() This commit adds an include of header file <linux/bootmem.h> to provide the missing function prototypes. This silences the following gcc warning (W=1): mm/memblock.c:1334:15: warning: no previous prototype for `memblock_virt_alloc_try_nid_raw' [-Wmissing-prototypes] mm/memblock.c:1371:15: warning: no previous prototype for `memblock_virt_alloc_try_nid_nopanic' [-Wmissing-prototypes] mm/memblock.c:1407:15: warning: no previous prototype for `memblock_virt_alloc_try_nid' [-Wmissing-prototypes] Also adds #ifdef blockers to prevent compilation failure on mips/ia64 where CONFIG_NO_BOOTMEM=n as could be seen in commit commit 6cc22dc08a24 ("revert "mm/memblock: add missing include <linux/bootmem.h>""). Because Makefile already does: obj-$(CONFIG_HAVE_MEMBLOCK) += memblock.o The #ifdef has been simplified from: #if defined(CONFIG_HAVE_MEMBLOCK) && defined(CONFIG_NO_BOOTMEM) to simply: #if defined(CONFIG_NO_BOOTMEM) Link: http://lkml.kernel.org/r/[email protected] Signed-off-by: Mathieu Malaterre <[email protected]> Suggested-by: Tony Luck <[email protected]> Suggested-by: Michal Hocko <[email protected]> Acked-by: Michal Hocko <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2018-07-21i2c: aspeed: Adjust spinlock scope in the irq handlerJae Hyun Yoo1-6/+10
This patch adjusts spinlock scope to make it wrap the whole irq handler using a single lock/unlock which covers both master and slave handlers. Signed-off-by: Jae Hyun Yoo <[email protected]> Reviewed-by: Brendan Higgins <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-07-21i2c: aspeed: Fix initial values of master and slave stateJae Hyun Yoo1-2/+2
This patch changes the order of enum aspeed_i2c_master_state and enum aspeed_i2c_slave_state defines to make their initial value to ASPEED_I2C_MASTER_INACTIVE and ASPEED_I2C_SLAVE_STOP respectively. In case of multi-master use, if a slave data comes ahead of the first master xfer, master_state starts from an invalid state so this change fixes the issue. Signed-off-by: Jae Hyun Yoo <[email protected]> Reviewed-by: Brendan Higgins <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-07-21i2c: aspeed: Add newline characters into message printings.Jae Hyun Yoo1-9/+9
There are some log printing without a newline character. This patch adds the missing newline characters. Signed-off-by: Jae Hyun Yoo <[email protected]> Reviewed-by: Brendan Higgins <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-07-21i2c: exynos5: Describe the hardware variant for readabilityKrzysztof Kozlowski1-8/+14
The driver supports multiple hardware variants of Exynos I2C controller which differ in FIFO depth, handling of interrupts and bus recovery in HSI2C_MASTER_ST_LOSE state. The difference in variant was a single bit set for Exynos7 variants and implicit lack of this bit for other variants. Make each variant explicit which also fixes the GCC warning about documentation: drivers/i2c/busses/i2c-exynos5.c:223: warning: Function parameter or member 'hw' not described in 'exynos_hsi2c_variant' No change in functionality. Signed-off-by: Krzysztof Kozlowski <[email protected]> Reviewed-by: Andrzej Hajda <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-07-21i2c: recovery: make pin init look like STOPWolfram Sang1-9/+10
When we initialize the pins, make sure it looks like STOP by dividing the delay into halves. It shouldn't matter because SDA is expected to be held low by a device, but for super-safety, let's do it. Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Ulrich Hecht <[email protected]> Reviewed-by: Peter Rosin <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-07-21i2c: rcar: Add compatible support for r8a77990 (R-Car E3)Hiromitsu Yamasaki1-0/+1
This patch adds compatible string support for the Renesas R-Car E3 (r8a77990) SoC. Signed-off-by: Hiromitsu Yamasaki <[email protected]> Signed-off-by: Wolfram Sang <[email protected]> Reviewed-by: Geert Uytterhoeven <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
2018-07-21MAINTAINERS: Add Eddie as the maintainer for the FSI-attached I2C driverEddie James1-0/+8
Signed-off-by: Eddie James <[email protected]> Acked-by: Joel Stanley <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
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