aboutsummaryrefslogtreecommitdiff
path: root/drivers/misc
AgeCommit message (Collapse)AuthorFilesLines
2019-09-05habanalabs: add debug print when rejecting CSOded Gabbay1-0/+2
When rejecting CS because of too many in-flight CS, print a debug message about it as it useful to know when the user is debugging (it indicates a back-pressure from the driver as the device is not fast enough to consume the CS) Signed-off-by: Oded Gabbay <[email protected]> Reviewed-by: Omer Shpigelman <[email protected]>
2019-09-05habanalabs: remove write_open_cnt propertyOded Gabbay1-10/+0
This property has attempted to show the number of open file descriptors on the device. This was a stupid and futile attempt so remove this property completely. Signed-off-by: Oded Gabbay <[email protected]>
2019-09-05powerpc/64s/radix: introduce options to disable use of the tlbie instructionNicholas Piggin2-0/+8
Introduce two options to control the use of the tlbie instruction. A boot time option which completely disables the kernel using the instruction, this is currently incompatible with HASH MMU, KVM, and coherent accelerators. And a debugfs option can be switched at runtime and avoids using tlbie for invalidating CPU TLBs for normal process and kernel address mappings. Coherent accelerators are still managed with tlbie, as will KVM partition scope translations. Cross-CPU TLB flushing is implemented with IPIs and tlbiel. This is a basic implementation which does not attempt to make any optimisation beyond the tlbie implementation. This is useful for performance testing among other things. For example in certain situations on large systems, using IPIs may be faster than tlbie as they can be directed rather than broadcast. Later we may also take advantage of the IPIs to do more interesting things such as trim the mm cpumask more aggressively. Signed-off-by: Nicholas Piggin <[email protected]> Signed-off-by: Michael Ellerman <[email protected]> Link: https://lore.kernel.org/r/[email protected]
2019-09-04misc: fastrpc: free dma buf scatter listSrinivas Kandagatla1-0/+1
dma buf scatter list is never freed, free it! Orignally detected by kmemleak: backtrace: [<ffffff80088b7658>] kmemleak_alloc+0x50/0x84 [<ffffff8008373284>] sg_kmalloc+0x38/0x60 [<ffffff8008373144>] __sg_alloc_table+0x60/0x110 [<ffffff800837321c>] sg_alloc_table+0x28/0x58 [<ffffff800837336c>] __sg_alloc_table_from_pages+0xc0/0x1ac [<ffffff800837346c>] sg_alloc_table_from_pages+0x14/0x1c [<ffffff8008097a3c>] __iommu_get_sgtable+0x5c/0x8c [<ffffff800850a1d0>] fastrpc_dma_buf_attach+0x84/0xf8 [<ffffff80085114bc>] dma_buf_attach+0x70/0xc8 [<ffffff8008509efc>] fastrpc_map_create+0xf8/0x1e8 [<ffffff80085086f4>] fastrpc_device_ioctl+0x508/0x900 [<ffffff80082428c8>] compat_SyS_ioctl+0x128/0x200 [<ffffff80080832c4>] el0_svc_naked+0x34/0x38 [<ffffffffffffffff>] 0xffffffffffffffff Reported-by: Mayank Chopra <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-09-04misc: fastrpc: fix double refcounting on dmabufSrinivas Kandagatla1-25/+0
dma buf refcount has to be done by the driver which is going to use the fd. This driver already does refcount on the dmabuf fd if its actively using it but also does an additional refcounting via extra ioctl. This additional refcount can lead to memory leak in cases where the applications fail to call the ioctl to decrement the refcount. So remove this extra refcount in the ioctl More info of dma buf usage at drivers/dma-buf/dma-buf.c Reported-by: Mayank Chopra <[email protected]> Reported-by: Jorge Ramirez-Ortiz <[email protected]> Tested-by: Jorge Ramirez-Ortiz <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-09-04misc: fastrpc: remove unused definitionJorge Ramirez-Ortiz1-1/+0
Remove unused INIT_MEMLEN_MAX define. Signed-off-by: Jorge Ramirez-Ortiz <[email protected]> Signed-off-by: Abhinav Asati <[email protected]> Signed-off-by: Vamsi Singamsetty <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-09-04misc: fastrpc: Don't reference rpmsg_device after removeBjorn Andersson1-0/+4
As fastrpc_rpmsg_remove() returns the rpdev of the channel context is no longer a valid object, so ensure to update the channel context to no longer reference the old object and guard in the invoke code path against dereferencing it. Signed-off-by: Bjorn Andersson <[email protected]> Signed-off-by: Mayank Chopra <[email protected]> Signed-off-by: Abhinav Asati <[email protected]> Signed-off-by: Vamsi Singamsetty <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-09-04misc: fastrpc: Reference count channel contextBjorn Andersson1-5/+38
The channel context is referenced from the fastrpc user and might as user space holds the file descriptor open outlive the fastrpc device, which is removed when the remote processor is shutting down. Reference count the channel context in order to retain this object until all references has been relinquished. Signed-off-by: Bjorn Andersson <[email protected]> Signed-off-by: Mayank Chopra <[email protected]> Signed-off-by: Abhinav Asati <[email protected]> Signed-off-by: Vamsi Singamsetty <[email protected]> Signed-off-by: Srinivas Kandagatla <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-09-04eeprom: Deprecate the legacy eeprom driverJean Delvare1-1/+4
Time has come to get rid of the old eeprom driver. The at24 driver should be used instead. So mark the eeprom driver as deprecated and give users some time to migrate. Then we can remove the legacy eeprom driver completely. Signed-off-by: Jean Delvare <[email protected]> Cc: Arnd Bergmann <[email protected]> Link: https://lore.kernel.org/r/20190902104838.058725c2@endymion Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-09-03Merge tag 'at24-v5.4-updates-for-wolfram' of ↵Wolfram Sang1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux into i2c/for-5.4 at24: updates for v5.4 - don't include an unneeded header
2019-09-02Merge 5.3-rc7 into char-misc-nextGreg Kroah-Hartman5-6/+18
We need the fixes in here as well for testing and merges Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-30misc/mei/hdcp: Fill transcoder index in port infoRamalingam C2-1/+15
For gen12+ platform we need to pass the transcoder info as part of the port info into ME FW. This change fills the payload for ME FW from hdcp_port_data. v2: Doc is enhanced for physical_port and attached_transcoder [Tomas] Signed-off-by: Ramalingam C <[email protected]> Acked-by: Jani Nikula <[email protected]> Reviewed-by: Shashank Sharma <[email protected]> Acked-by: Tomas Winkler <[email protected]> Signed-off-by: Uma Shankar <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-08-30drm/i915: mei_hdcp: I915 sends ddi index as per ME FWRamalingam C2-35/+11
I915 converts it's port value into ddi index defiend by ME FW and pass it as a member of hdcp_port_data structure. Hence expose the enum mei_fw_ddi to I915 through i915_mei_interface.h. v2: Copyright years are bumped [Tomas] Signed-off-by: Ramalingam C <[email protected]> Acked-by: Jani Nikula <[email protected]> Reviewed-by: Shashank Sharma <[email protected]> Acked-by: Tomas Winkler <[email protected]> Signed-off-by: Uma Shankar <[email protected]> Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
2019-08-28vmw_balloon: Fix offline page marking with compactionNadav Amit1-2/+8
The compaction code already marks pages as offline when it enqueues pages in the ballooned page list, and removes the mapping when the pages are removed from the list. VMware balloon also updates the flags, instead of letting the balloon-compaction logic handle it, which causes the assertion VM_BUG_ON_PAGE(!PageOffline(page)) to fire, when __ClearPageOffline is called the second time. This causes the following crash. [ 487.104520] kernel BUG at include/linux/page-flags.h:749! [ 487.106364] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC PTI [ 487.107681] CPU: 7 PID: 1106 Comm: kworker/7:3 Not tainted 5.3.0-rc5balloon #227 [ 487.109196] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 12/12/2018 [ 487.111452] Workqueue: events_freezable vmballoon_work [vmw_balloon] [ 487.112779] RIP: 0010:vmballoon_release_page_list+0xaa/0x100 [vmw_balloon] [ 487.114200] Code: fe 48 c1 e7 06 4c 01 c7 8b 47 30 41 89 c1 41 81 e1 00 01 00 f0 41 81 f9 00 00 00 f0 74 d3 48 c7 c6 08 a1 a1 c0 e8 06 0d e7 ea <0f> 0b 44 89 f6 4c 89 c7 e8 49 9c e9 ea 49 8d 75 08 49 8b 45 08 4d [ 487.118033] RSP: 0018:ffffb82f012bbc98 EFLAGS: 00010246 [ 487.119135] RAX: 0000000000000037 RBX: 0000000000000001 RCX: 0000000000000006 [ 487.120601] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff9a85b6bd7620 [ 487.122071] RBP: ffffb82f012bbcc0 R08: 0000000000000001 R09: 0000000000000000 [ 487.123536] R10: 0000000000000000 R11: 0000000000000000 R12: ffffb82f012bbd00 [ 487.125002] R13: ffffe97f4598d9c0 R14: 0000000000000000 R15: ffffb82f012bbd34 [ 487.126463] FS: 0000000000000000(0000) GS:ffff9a85b6bc0000(0000) knlGS:0000000000000000 [ 487.128110] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 487.129316] CR2: 00007ffe6e413ea0 CR3: 0000000230b18001 CR4: 00000000003606e0 [ 487.130812] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 487.132283] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 487.133749] Call Trace: [ 487.134333] vmballoon_deflate+0x22c/0x390 [vmw_balloon] [ 487.135468] vmballoon_work+0x6e7/0x913 [vmw_balloon] [ 487.136711] ? process_one_work+0x21a/0x5e0 [ 487.138581] process_one_work+0x298/0x5e0 [ 487.139926] ? vmballoon_migratepage+0x310/0x310 [vmw_balloon] [ 487.141610] ? process_one_work+0x298/0x5e0 [ 487.143053] worker_thread+0x41/0x400 [ 487.144389] kthread+0x12b/0x150 [ 487.145582] ? process_one_work+0x5e0/0x5e0 [ 487.146937] ? kthread_create_on_node+0x60/0x60 [ 487.148637] ret_from_fork+0x3a/0x50 Fix it by updating the PageOffline indication only when a 2MB page is enqueued and dequeued. The 4KB pages will be handled correctly by the balloon compaction logic. Fixes: 83a8afa72e9c ("vmw_balloon: Compaction support") Cc: David Hildenbrand <[email protected]> Reported-by: Thomas Hellstrom <[email protected]> Signed-off-by: Nadav Amit <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-28VMCI: Release resource if the work is already queuedNadav Amit1-2/+4
Francois reported that VMware balloon gets stuck after a balloon reset, when the VMCI doorbell is removed. A similar error can occur when the balloon driver is removed with the following splat: [ 1088.622000] INFO: task modprobe:3565 blocked for more than 120 seconds. [ 1088.622035] Tainted: G W 5.2.0 #4 [ 1088.622087] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1088.622205] modprobe D 0 3565 1450 0x00000000 [ 1088.622210] Call Trace: [ 1088.622246] __schedule+0x2a8/0x690 [ 1088.622248] schedule+0x2d/0x90 [ 1088.622250] schedule_timeout+0x1d3/0x2f0 [ 1088.622252] wait_for_completion+0xba/0x140 [ 1088.622320] ? wake_up_q+0x80/0x80 [ 1088.622370] vmci_resource_remove+0xb9/0xc0 [vmw_vmci] [ 1088.622373] vmci_doorbell_destroy+0x9e/0xd0 [vmw_vmci] [ 1088.622379] vmballoon_vmci_cleanup+0x6e/0xf0 [vmw_balloon] [ 1088.622381] vmballoon_exit+0x18/0xcc8 [vmw_balloon] [ 1088.622394] __x64_sys_delete_module+0x146/0x280 [ 1088.622408] do_syscall_64+0x5a/0x130 [ 1088.622410] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1088.622415] RIP: 0033:0x7f54f62791b7 [ 1088.622421] Code: Bad RIP value. [ 1088.622421] RSP: 002b:00007fff2a949008 EFLAGS: 00000206 ORIG_RAX: 00000000000000b0 [ 1088.622426] RAX: ffffffffffffffda RBX: 000055dff8b55d00 RCX: 00007f54f62791b7 [ 1088.622426] RDX: 0000000000000000 RSI: 0000000000000800 RDI: 000055dff8b55d68 [ 1088.622427] RBP: 000055dff8b55d00 R08: 00007fff2a947fb1 R09: 0000000000000000 [ 1088.622427] R10: 00007f54f62f5cc0 R11: 0000000000000206 R12: 000055dff8b55d68 [ 1088.622428] R13: 0000000000000001 R14: 000055dff8b55d68 R15: 00007fff2a94a3f0 The cause for the bug is that when the "delayed" doorbell is invoked, it takes a reference on the doorbell entry and schedules work that is supposed to run the appropriate code and drop the doorbell entry reference. The code ignores the fact that if the work is already queued, it will not be scheduled to run one more time. As a result one of the references would not be dropped. When the code waits for the reference to get to zero, during balloon reset or module removal, it gets stuck. Fix it. Drop the reference if schedule_work() indicates that the work is already queued. Note that this bug got more apparent (or apparent at all) due to commit ce664331b248 ("vmw_balloon: VMCI_DOORBELL_SET does not check status"). Fixes: 83e2ec765be03 ("VMCI: doorbell implementation.") Reported-by: Francois Rigault <[email protected]> Cc: Jorgen Hansen <[email protected]> Cc: Adit Ranadive <[email protected]> Cc: Alexios Zavras <[email protected]> Cc: Vishnu DASA <[email protected]> Cc: [email protected] Signed-off-by: Nadav Amit <[email protected]> Reviewed-by: Vishnu Dasa <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-28Merge tag 'lkdtm-next' of ↵Greg Kroah-Hartman5-1/+55
https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux into char-misc-next Kees writes: Updates to LKDTM for -next - split WARNING into two tests: with message and without - add prototype-granularity forward CFI test * tag 'lkdtm-next' of https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: lkdtm: Split WARNING into separate tests lkdtm: Add Control Flow Integrity test
2019-08-28lkdtm/bugs: fix build error in lkdtm_EXHAUST_STACKRaul E Rangel1-2/+2
lkdtm/bugs.c:94:2: error: format '%d' expects argument of type 'int', but argument 2 has type 'long unsigned int' [-Werror=format=] pr_info("Calling function with %d frame size to depth %d ...\n", ^ THREAD_SIZE is defined as a unsigned long, cast CONFIG_FRAME_WARN to unsigned long as well. Fixes: 24cccab42c419 ("lkdtm/bugs: Adjust recursion test to avoid elision") Cc: stable <[email protected]> Signed-off-by: Raul E Rangel <[email protected]> Acked-by: Kees Cook <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-28mei: me: add Tiger Lake point LP device IDTomas Winkler2-0/+4
Add Tiger Lake Point device ID for TGP LP. Signed-off-by: Tomas Winkler <[email protected]> Cc: stable <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-22misc: xilinx_sdfec: fix spelling mistake: "Schdule" -> "Schedule"Colin Ian King1-1/+1
There is a spelling mistake in a dev_dbg message, fix it. Signed-off-by: Colin Ian King <[email protected]> Reviewed-by: Dragan Cvetic <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-22misc: xilinx_sdfec: Prevent integer overflow in xsdfec_table_write()Dan Carpenter1-1/+3
The checking here needs to handle integer overflows because "offset" and "len" come from the user. Fixes: 20ec628e8007 ("misc: xilinx_sdfec: Add ability to configure LDPC") Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Michal Simek <[email protected]> Reviewed-by: Dragan Cvetic <[email protected]> Link: https://lore.kernel.org/r/20190821071122.GD26957@mwanda Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-22misc: xilinx_sdfec: Prevent a divide by zero in xsdfec_reg0_write()Dan Carpenter1-1/+1
The "psize" value comes from the user so we need to verify that it's non-zero before we check if "n % psize" or it will crash. Fixes: 20ec628e8007 ("misc: xilinx_sdfec: Add ability to configure LDPC") Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Michal Simek <[email protected]> Link: https://lore.kernel.org/r/20190821070953.GC26957@mwanda Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-22misc: xilinx_sdfec: Return -EFAULT if copy_from_user() failsDan Carpenter1-2/+3
The copy_from_user() function returns the number of bytes remaining to be copied but we want to return -EFAULT to the user. Fixes: 20ec628e8007 ("misc: xilinx_sdfec: Add ability to configure LDPC") Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Michal Simek <[email protected]> Reviewed-by: Dragan Cvetic <[email protected]> Link: https://lore.kernel.org/r/20190822083105.GI3964@kadam Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-22misc: xilinx_sdfec: Fix a couple small information leaksDan Carpenter1-0/+2
These structs have holes in them so we end up disclosing a few bytes of uninitialized stack data. drivers/misc/xilinx_sdfec.c:305 xsdfec_get_status() warn: check that 'status' doesn't leak information (struct has a hole after 'activity') drivers/misc/xilinx_sdfec.c:449 xsdfec_get_turbo() warn: check that 'turbo_params' doesn't leak information (struct has a hole after 'scale') We need to zero out the holes with memset(). Fixes: 6bd6a690c2e7 ("misc: xilinx_sdfec: Add stats & status ioctls") Signed-off-by: Dan Carpenter <[email protected]> Reviewed-by: Dragan Cvetic <[email protected]> Reviewed-by: Michal Simek <[email protected]> Link: https://lore.kernel.org/r/20190821070606.GA26957@mwanda Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-21Merge branch 'odp_fixes' into hmm.gitJason Gunthorpe15-81/+126
From rdma.git Jason Gunthorpe says: ==================== This is a collection of general cleanups for ODP to clarify some of the flows around umem creation and use of the interval tree. ==================== The branch is based on v5.3-rc5 due to dependencies, and is being taken into hmm.git due to dependencies in the next patches. * odp_fixes: RDMA/mlx5: Use odp instead of mr->umem in pagefault_mr RDMA/mlx5: Use ib_umem_start instead of umem.address RDMA/core: Make invalidate_range a device operation RDMA/odp: Use kvcalloc for the dma_list and page_list RDMA/odp: Check for overflow when computing the umem_odp end RDMA/odp: Provide ib_umem_odp_release() to undo the allocs RDMA/odp: Split creating a umem_odp from ib_umem_get RDMA/odp: Make the three ways to create a umem_odp clear RMDA/odp: Consolidate umem_odp initialization RDMA/odp: Make it clearer when a umem is an implicit ODP umem RDMA/odp: Iterate over the whole rbtree directly RDMA/odp: Use the common interval tree library instead of generic RDMA/mlx5: Fix MR npages calculation for IB_ACCESS_HUGETLB Signed-off-by: Jason Gunthorpe <[email protected]>
2019-08-19lkdtm: Split WARNING into separate testsKees Cook3-1/+8
There are three paths through the kernel code exception logging: - BUG (no configurable printk message) - WARN_ON (no configurable printk message) - WARN (configurable printk message) LKDTM was not testing WARN_ON(). This is needed to evaluate the placement of the "cut here" line, which needs special handling in each of the three exceptions (and between architectures that implement instruction exceptions to implement the code exceptions). Signed-off-by: Kees Cook <[email protected]>
2019-08-19Merge 5.3-rc5 into char-misc-nextGreg Kroah-Hartman9-54/+91
We need the char/misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-16ia64: remove support for machvecsChristoph Hellwig3-11/+11
The only thing remaining of the machvecs is a few checks if we are running on an SGI UV system. Replace those with the existing is_uv_system() check that has been rewritten to simply check the OEM ID directly. That leaves us with a generic kernel that is as fast as the previous DIG/ZX1/UV kernels, but can support all hardware. Support for UV and the HP SBA IOMMU is now optional based on new config options. Signed-off-by: Christoph Hellwig <[email protected]> Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Tony Luck <[email protected]>
2019-08-16drivers: remove the SGI SN2 IOC4 base supportChristoph Hellwig3-511/+0
The IOC4 is a multi-function chip seen on SGI SN2 and some SGI MIPS systems. This removes the base driver, which while not having an SN2 Kconfig dependency was only for sub-drivers that had one. Signed-off-by: Christoph Hellwig <[email protected]> Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Tony Luck <[email protected]>
2019-08-16misc/sgi-xp: remove SGI SN2 supportChristoph Hellwig13-3030/+15
Note this also marks xp broken on ia64 now, as the UV support, which was disable in generic kernels before actually never compiled due to undefined uv_gpa_to_soc_phys_ram and uv_gpa_in_mmr_space symbols since at least commit c2c9f1157414 ("x86: uv: update XPC to handle updated BIOS interface"). Signed-off-by: Christoph Hellwig <[email protected]> Link: https://lkml.kernel.org/r/[email protected] Signed-off-by: Tony Luck <[email protected]>
2019-08-16misc/sgi-gru: use mmu_notifier_get/put for struct gru_mm_structJason Gunthorpe3-62/+25
GRU is already using almost the same algorithm as get/put, it even helpfully has a 10 year old comment to make this algorithm common, which is finally happening. There are a few differences and fixes from this conversion: - GRU used rcu not srcu to read the hlist - Unclear how the locking worked to prevent gru_register_mmu_notifier() from running concurrently with gru_drop_mmu_notifier() - this version is safe - GRU had a release function which only set a variable without any locking that skiped the synchronize_srcu during unregister which looks racey, but this makes it reliable via the integrated call_srcu(). - It is unclear if the mmap_sem is actually held when __mmu_notifier_register() was called, lockdep will now warn if this is wrong Link: https://lore.kernel.org/r/[email protected] Reviewed-by: Christoph Hellwig <[email protected]> Reviewed-by: Dimitri Sivanich <[email protected]> Signed-off-by: Jason Gunthorpe <[email protected]>
2019-08-15sgi-xpc: Use GFP_ATOMIC for kmalloc in atomic context.Fuqian Huang1-1/+1
xpc_send_activate_IRQ_uv is called from <-xpc_send_activate_IRQ_part_uv <-xpc_indicate_partition_disengaged_uv (xpc_arch_ops.indicate_partition_disengaged) <-xpc_die_deactivate <-xpc_system_die xpc_system_die is registered by atomic_notifier_chain_register, which indicates xpc_system_die may be called in atomic context. So the kmalloc in xpc_send_activate_IRQ_uv may be in atomic context. Use GFP_ATOMIC instead of GFP_KERNEL in kmalloc. Signed-off-by: Fuqian Huang <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-15misc: xilinx-sdfec: fix dependency and build errorRandy Dunlap1-0/+1
lib/devres.c, which implements devm_ioremap_resource(), is only built when CONFIG_HAS_IOMEM is set/enabled, so XILINX_SDFEC should depend on HAS_IOMEM. Fixes this build error (as seen on UML builds): ERROR: "devm_ioremap_resource" [drivers/misc/xilinx_sdfec.ko] undefined! Fixes: 76d83e1c3233 ("misc: xilinx-sdfec: add core driver") Signed-off-by: Randy Dunlap <[email protected]> Cc: Derek Kiernan <[email protected]> Cc: Dragan Cvetic <[email protected]> Cc: Greg Kroah-Hartman <[email protected]> Cc: Geert Uytterhoeven <[email protected]> Cc: Arnd Bergmann <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-15sgi-xp: xpc_uv: Make structure xpc_arch_ops_uv constantNishka Dasgupta1-1/+1
The static xpc_arch_operations structure xpc_arch_ops_uv is only copied into the structure xpc_arch_ops, after which it is never modified; nor is it used in any other way. Hence it can be declared as a constant to prevent unintended modifications of its fields. Issue found with Coccinelle. Signed-off-by: Nishka Dasgupta <[email protected]> Acked-by: Robin Holt <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-15xilinx_sdfec: Convert to IDAMatthew Wilcox (Oracle)1-19/+6
This driver does not use the lookup abilities of the IDR, so convert it to the more space-efficient IDA. Signed-off-by: Matthew Wilcox (Oracle) <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-15misc: xilinx_sdfec: Add stats & status ioctlsDragan Cvetic1-0/+125
SD-FEC statistic data are: - count of data interface errors (isr_err_count) - count of Correctable ECC errors (cecc_count) - count of Uncorrectable ECC errors (uecc_count) Add support: 1. clear stats ioctl callback which clears collected statistic data, 2. get stats ioctl callback which reads a collected statistic data, 3. set default configuration ioctl callback, 4. start ioctl callback enables SD-FEC HW, 5. stop ioctl callback disables SD-FEC HW. In a failed state driver enables the following ioctls: - get status - get statistics - clear stats - set default SD-FEC device configuration Tested-by: Santhosh Dyavanapally <[email protected]> Tested by: Punnaiah Choudary Kalluri <[email protected]> Tested-by: Derek Kiernan <[email protected]> Tested-by: Dragan Cvetic <[email protected]> Signed-off-by: Derek Kiernan <[email protected]> Signed-off-by: Dragan Cvetic <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-15misc: xilinx_sdfec: Support poll file operationDragan Cvetic1-4/+236
Support monitoring and detecting the SD-FEC error events through IRQ and poll file operation. The SD-FEC device can detect one-error or multi-error events. An error triggers an interrupt which creates and run the ONE_SHOT IRQ thread. The ONE_SHOT IRQ thread detects type of error and pass that information to the poll function. The file_operation callback poll(), collects the events and updates the statistics accordingly. The function poll blocks() on waiting queue which can be unblocked by ONE_SHOT IRQ handling thread. Support SD-FEC interrupt set ioctl callback. The SD-FEC can detect two type of errors: coding errors (ECC) and a data interface errors (TLAST). The errors are events which can trigger an IRQ if enabled. The driver can monitor and detect these errors through IRQ. Also the driver updates the statistical data. Tested-by: Dragan Cvetic <[email protected]> Signed-off-by: Derek Kiernan <[email protected]> Signed-off-by: Dragan Cvetic <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-15misc: xilinx_sdfec: Add ability to get/set configDragan Cvetic1-0/+88
- Add capability to get SD-FEC config data using ioctl XSDFEC_GET_CONFIG. - Add capability to set SD-FEC data order using ioctl SDFEC_SET_ORDER. - Add capability to set SD-FEC bypass option using ioctl XSDFEC_SET_BYPASS. - Add capability to set SD-FEC active state using ioctl XSDFEC_IS_ACTIVE. Tested-by: Dragan Cvetic <[email protected]> Signed-off-by: Derek Kiernan <[email protected]> Signed-off-by: Dragan Cvetic <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-15misc: xilinx_sdfec: Add ability to configure LDPCDragan Cvetic1-0/+324
Add the capability to configure LDPC mode via the ioctl XSDFEC_ADD_LDPC_CODE_PARAMS. Tested-by: Dragan Cvetic <[email protected]> Signed-off-by: Derek Kiernan <[email protected]> Signed-off-by: Dragan Cvetic <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-15misc: xilinx_sdfec: Add ability to configure turboDragan Cvetic1-0/+110
Add the capability to configure and retrieve turbo mode via the ioctls XSDFEC_SET_TURBO and XSDFEC_GET_TURBO. Add char device interface per DT node present and support file operations: - open(), - close(), - unlocked_ioctl(), - compat_ioctl(). Tested-by: Dragan Cvetic <[email protected]> Signed-off-by: Derek Kiernan <[email protected]> Signed-off-by: Dragan Cvetic <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-15misc: xilinx_sdfec: Store driver config and stateDragan Cvetic1-6/+299
Stores configuration based on parameters from the DT node and values from the SD-FEC core plus reads the default state from the SD-FEC core. To obtain values from the core register read, write capabilities have been added plus related register map details. Tested-by: Dragan Cvetic <[email protected]> Signed-off-by: Derek Kiernan <[email protected]> Signed-off-by: Dragan Cvetic <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-12lkdtm: Add Control Flow Integrity testKees Cook4-0/+47
This adds a simple test for forward CFI (indirect function calls) with function prototype granularity (as implemented by Clang's CFI). Signed-off-by: Kees Cook <[email protected]>
2019-08-12habanalabs: fix device IRQ unmasking for BE hostBen Segal1-9/+24
When unmasking IRQs inside the ASIC, the driver passes an array of all the IRQ to unmask. The ASIC's CPU is working in LE so when running in a BE host, the driver needs to do the proper endianness swapping when preparing this array. In addition, this patch also fixes the endianness of a couple of kernel log debug messages that print values of packets Signed-off-by: Ben Segal <[email protected]> Reviewed-by: Oded Gabbay <[email protected]> Signed-off-by: Oded Gabbay <[email protected]>
2019-08-12habanalabs: fix endianness handling for internal QMAN submissionOded Gabbay4-15/+17
The PQs of internal H/W queues (QMANs) can be located in different memory areas for different ASICs. Therefore, when writing PQEs, we need to use the correct function according to the location of the PQ. e.g. if the PQ is located in the device's memory (SRAM or DRAM), we need to use memcpy_toio() so it would work in architectures that have separate address ranges for IO memory. This patch makes the code that writes the PQE to be ASIC-specific so we can handle this properly per ASIC. Signed-off-by: Oded Gabbay <[email protected]> Tested-by: Ben Segal <[email protected]>
2019-08-12habanalabs: fix completion queue handling when host is BEBen Segal1-14/+13
This patch fix the CQ irq handler to work in hosts with BE architecture. It adds the correct endian-swapping macros around the relevant memory accesses. Signed-off-by: Ben Segal <[email protected]> Reviewed-by: Oded Gabbay <[email protected]> Signed-off-by: Oded Gabbay <[email protected]>
2019-08-12habanalabs: fix endianness handling for packets from userBen Segal2-13/+32
Packets that arrive from the user and need to be parsed by the driver are assumed to be in LE format. This patch fix all the places where the code handles these packets and use the correct endianness macros to handle them, as the driver handles the packets in CPU format (LE or BE depending on the arch). Signed-off-by: Ben Segal <[email protected]> Reviewed-by: Oded Gabbay <[email protected]> Signed-off-by: Oded Gabbay <[email protected]>
2019-08-12habanalabs: fix DRAM usage accounting on context tear downTomer Tayar1-0/+2
The patch fix the DRAM usage accounting by adding a missing update of the DRAM memory consumption, when a context is being torn down without an organized release of the allocated memory. Signed-off-by: Tomer Tayar <[email protected]> Reviewed-by: Oded Gabbay <[email protected]> Signed-off-by: Oded Gabbay <[email protected]>
2019-08-12habanalabs: Avoid double free in error flowTomer Tayar1-3/+2
In case kernel context init fails during device initialization, both hl_ctx_put() and kfree() are called, ending with a double free of the kernel context. Calling kfree() is needed only when a failure happens between the allocation of the kernel context and its initialization, so move it to there and remove it from the error flow. Signed-off-by: Tomer Tayar <[email protected]> Reviewed-by: Oded Gabbay <[email protected]> Signed-off-by: Oded Gabbay <[email protected]>
2019-08-12Merge 5.3-rc4 into char-misc-nextGreg Kroah-Hartman5-24/+23
We need the char-misc fixes in here as well. Signed-off-by: Greg Kroah-Hartman <[email protected]>
2019-08-10Merge tag 'char-misc-5.3-rc4' of ↵Linus Torvalds4-23/+22
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull char/misc driver fixes Greg KH: "Here are some small char/misc driver fixes for 5.3-rc4. Two of these are for the habanalabs driver for issues found when running on a big-endian system (are they still alive?) The others are tiny fixes reported by people, and a MAINTAINERS update about the location of the fpga development tree. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-5.3-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: coresight: Fix DEBUG_LOCKS_WARN_ON for uninitialized attribute MAINTAINERS: Move linux-fpga tree to new location nvmem: Use the same permissions for eeprom as for nvmem habanalabs: fix host memory polling in BE architecture habanalabs: fix F/W download in BE architecture
2019-08-05misc: Remove spear13xx pcie gadget driverStephen Boyd3-807/+0
This driver has been marked broken since 2013, see commit 98097858ccf3 ("misc: mark spear13xx-pcie-gadget as broken"). Let's remove this file now that it's been more than 5 years of existing in a broken state. Cc: Arnd Bergmann <[email protected]> Signed-off-by: Stephen Boyd <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>
Powered by cgit, Gruvboxed by Blaster4385.