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2020-08-22habanalabs: unmap PCI bars upon iATU failureOfir Bitton
In case the driver fails to configure the PCI controller iATU, it needs to unmap the PCI bars before exiting so if the driver is removed, the bars won't be left mapped. Signed-off-by: Ofir Bitton <obitton@habana.ai> Reviewed-by: Oded Gabbay <oded.gabbay@gmail.com> Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
2020-08-21drm/msm: enable vblank during atomic commitsRob Clark
This has roughly the same effect as drm_atomic_helper_wait_for_vblanks(), basically just ensuring that vblank accounting is enabled so that we get valid timestamp/seqn on pageflip events. Signed-off-by: Rob Clark <robdclark@chromium.org> Tested-by: Stephen Boyd <swboyd@chromium.org> Signed-off-by: Rob Clark <robdclark@chromium.org>
2020-08-21null_blk: fix passing of REQ_FUA flag in null_handle_rqHou Pu
REQ_FUA should be checked using rq->cmd_flags instead of req_op(). Fixes: deb78b419dfda ("nullb: emulate cache") Signed-off-by: Hou Pu <houpu@bytedance.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvmet: Disable keep-alive timer when kato is cleared to 0hAmit Engel
Based on nvme spec, when keep alive timeout is set to zero the keep-alive timer should be disabled. Signed-off-by: Amit Engel <amit.engel@dell.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme: redirect commands on dying queueChao Leng
If a command send through nvme-multipath failed on a dying queue, resend it on another path. Signed-off-by: Chao Leng <lengchao@huawei.com> [hch: rebased on top of the completion refactoring] Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme: just check the status code type in nvme_is_path_errorChristoph Hellwig
Check the SCT sub-field for a path related status instead of enumerating invididual status code. As of NVMe 1.4 this adds "Internal Path Error" and "Controller Pathing Error" to the list, but it also future proofs for additional status codes added to the category. Suggested-by: Chao Leng <lengchao@huawei.com> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme: refactor command completionChristoph Hellwig
Lift all the code to decide the dispostition of a completed command from nvme_complete_rq and nvme_failover_req into a new helper, which returns an emum of the potential actions. nvme_complete_rq then just switches on those and calls the proper helper for the action. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme: rename and document nvme_end_requestChristoph Hellwig
nvme_end_request is a bit misnamed, as it wraps around the blk_mq_complete_* API. It's semantics also are non-trivial, so give it a more descriptive name and add a comment explaining the semantics. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Reviewed-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme: skip noiob for zoned devicesKeith Busch
Zoned block devices reuse the chunk_sectors queue limit to define zone boundaries. If a such a device happens to also report an optimal boundary, do not use that to define the chunk_sectors as that may intermittently interfere with io splitting and zone size queries. Signed-off-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme-pci: fix PRP pool sizeChristoph Hellwig
All operations are based on the controller, not the host page size. Switch the dma pool to use the controller page size as well to avoid massive overallocations on large page size systems. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme-pci: Use u32 for nvme_dev.q_depth and nvme_queue.q_depthJohn Garry
Recently nvme_dev.q_depth was changed from an int to u16 type. This falls over for the queue depth calculation in nvme_pci_enable(), where NVME_CAP_MQES(dev->ctrl.cap) + 1 may overflow as a u16, as NVME_CAP_MQES() is a 16b number also. That happens for me, and this is the result: root@ubuntu:/home/john# [148.272996] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000010 Mem abort info: ESR = 0x96000004 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 Data abort info: ISV = 0, ISS = 0x00000004 CM = 0, WnR = 0 user pgtable: 4k pages, 48-bit VAs, pgdp=00000a27bf3c9000 [0000000000000010] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 96000004 [#1] PREEMPT SMP Modules linked in: nvme nvme_core CPU: 56 PID: 256 Comm: kworker/u195:0 Not tainted 5.8.0-next-20200812 #27 Hardware name: Huawei D06 /D06, BIOS Hisilicon D06 UEFI RC0 - V1.16.01 03/15/2019 Workqueue: nvme-reset-wq nvme_reset_work [nvme] pstate: 80c00009 (Nzcv daif +PAN +UAO BTYPE=--) pc : __sg_alloc_table_from_pages+0xec/0x238 lr : __sg_alloc_table_from_pages+0xc8/0x238 sp : ffff800013ccbad0 x29: ffff800013ccbad0 x28: ffff0a27b3d380a8 x27: 0000000000000000 x26: 0000000000002dc2 x25: 0000000000000dc0 x24: 0000000000000000 x23: 0000000000000000 x22: ffff800013ccbbe8 x21: 0000000000000010 x20: 0000000000000000 x19: 00000000fffff000 x18: ffffffffffffffff x17: 00000000000000c0 x16: fffffe289eaf6380 x15: ffff800011b59948 x14: ffff002bc8fe98f8 x13: ff00000000000000 x12: ffff8000114ca000 x11: 0000000000000000 x10: ffffffffffffffff x9 : ffffffffffffffc0 x8 : ffff0a27b5f9b6a0 x7 : 0000000000000000 x6 : 0000000000000001 x5 : ffff0a27b5f9b680 x4 : 0000000000000000 x3 : ffff0a27b5f9b680 x2 : 0000000000000000 x1 : 0000000000000001 x0 : 0000000000000000 Call trace: __sg_alloc_table_from_pages+0xec/0x238 sg_alloc_table_from_pages+0x18/0x28 iommu_dma_alloc+0x474/0x678 dma_alloc_attrs+0xd8/0xf0 nvme_alloc_queue+0x114/0x160 [nvme] nvme_reset_work+0xb34/0x14b4 [nvme] process_one_work+0x1e8/0x360 worker_thread+0x44/0x478 kthread+0x150/0x158 ret_from_fork+0x10/0x34 Code: f94002c3 6b01017f 540007c2 11000486 (f8645aa5) ---[ end trace 89bb2b72d59bf925 ]--- Fix by making onto a u32. Also use u32 for nvme_dev.q_depth, as we assign this value from nvme_dev.q_depth, and nvme_dev.q_depth will possibly hold 65536 - this avoids the same crash as above. Fixes: 61f3b8963097 ("nvme-pci: use unsigned for io queue depth") Signed-off-by: John Garry <john.garry@huawei.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme: Use spin_lock_irq() when taking the ctrl->lockLogan Gunthorpe
When locking the ctrl->lock spinlock IRQs need to be disabled to avoid a dead lock. The new spin_lock() calls recently added produce the following lockdep warning when running the blktest nvme/003: ================================ WARNING: inconsistent lock state -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. ksoftirqd/2/22 [HC0[0]:SC1[1]:HE0:SE0] takes: ffff888276a8c4c0 (&ctrl->lock){+.?.}-{2:2}, at: nvme_keep_alive_end_io+0x50/0xc0 {SOFTIRQ-ON-W} state was registered at: lock_acquire+0x164/0x500 _raw_spin_lock+0x28/0x40 nvme_get_effects_log+0x37/0x1c0 nvme_init_identify+0x9e4/0x14f0 nvme_reset_work+0xadd/0x2360 process_one_work+0x66b/0xb70 worker_thread+0x6e/0x6c0 kthread+0x1e7/0x210 ret_from_fork+0x22/0x30 irq event stamp: 1449221 hardirqs last enabled at (1449220): [<ffffffff81c58e69>] ktime_get+0xf9/0x140 hardirqs last disabled at (1449221): [<ffffffff83129665>] _raw_spin_lock_irqsave+0x25/0x60 softirqs last enabled at (1449210): [<ffffffff83400447>] __do_softirq+0x447/0x595 softirqs last disabled at (1449215): [<ffffffff81b489b5>] run_ksoftirqd+0x35/0x50 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&ctrl->lock); <Interrupt> lock(&ctrl->lock); *** DEADLOCK *** no locks held by ksoftirqd/2/22. stack backtrace: CPU: 2 PID: 22 Comm: ksoftirqd/2 Not tainted 5.8.0-rc4-eid-vmlocalyes-dbg-00157-g7236657c6b3a #1450 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.12.0-1 04/01/2014 Call Trace: dump_stack+0xc8/0x11a print_usage_bug.cold.63+0x235/0x23e mark_lock+0xa9c/0xcf0 __lock_acquire+0xd9a/0x2b50 lock_acquire+0x164/0x500 _raw_spin_lock_irqsave+0x40/0x60 nvme_keep_alive_end_io+0x50/0xc0 blk_mq_end_request+0x158/0x210 nvme_complete_rq+0x146/0x500 nvme_loop_complete_rq+0x26/0x30 [nvme_loop] blk_done_softirq+0x187/0x1e0 __do_softirq+0x118/0x595 run_ksoftirqd+0x35/0x50 smpboot_thread_fn+0x1d3/0x310 kthread+0x1e7/0x210 ret_from_fork+0x22/0x30 Fixes: be93e87e7802 ("nvme: support for multiple Command Sets Supported and Effects log pages") Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Tested-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvmet: call blk_mq_free_request() directlyChaitanya Kulkarni
Instead of calling blk_put_request() which calls blk_mq_free_request(), call blk_mq_free_request() directly for NVMeOF passthru. This is to mainly avoid an extra function call in the completion path nvmet_passthru_req_done(). Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvmet: fix oops in pt cmd executionChaitanya Kulkarni
In the existing NVMeOF Passthru core command handling on failure of nvme_alloc_request() it errors out with rq value set to NULL. In the error handling path it calls blk_put_request() without checking if rq is set to NULL or not which produces following Oops:- [ 1457.346861] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 1457.347838] #PF: supervisor read access in kernel mode [ 1457.348464] #PF: error_code(0x0000) - not-present page [ 1457.349085] PGD 0 P4D 0 [ 1457.349402] Oops: 0000 [#1] SMP NOPTI [ 1457.349851] CPU: 18 PID: 10782 Comm: kworker/18:2 Tainted: G OE 5.8.0-rc4nvme-5.9+ #35 [ 1457.350951] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.12.0-59-gc9ba5276e3214 [ 1457.352347] Workqueue: events nvme_loop_execute_work [nvme_loop] [ 1457.353062] RIP: 0010:blk_mq_free_request+0xe/0x110 [ 1457.353651] Code: 3f ff ff ff 83 f8 01 75 0d 4c 89 e7 e8 1b db ff ff e9 2d ff ff ff 0f 0b eb ef 66 8 [ 1457.355975] RSP: 0018:ffffc900035b7de0 EFLAGS: 00010282 [ 1457.356636] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000002 [ 1457.357526] RDX: ffffffffa060bd05 RSI: 0000000000000000 RDI: 0000000000000000 [ 1457.358416] RBP: 0000000000000037 R08: 0000000000000000 R09: 0000000000000000 [ 1457.359317] R10: 0000000000000000 R11: 000000000000006d R12: 0000000000000000 [ 1457.360424] R13: ffff8887ffa68600 R14: 0000000000000000 R15: ffff8888150564c8 [ 1457.361322] FS: 0000000000000000(0000) GS:ffff888814600000(0000) knlGS:0000000000000000 [ 1457.362337] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1457.363058] CR2: 0000000000000000 CR3: 000000081c0ac000 CR4: 00000000003406e0 [ 1457.363973] Call Trace: [ 1457.364296] nvmet_passthru_execute_cmd+0x150/0x2c0 [nvmet] [ 1457.364990] process_one_work+0x24e/0x5a0 [ 1457.365493] ? __schedule+0x353/0x840 [ 1457.365957] worker_thread+0x3c/0x380 [ 1457.366426] ? process_one_work+0x5a0/0x5a0 [ 1457.366948] kthread+0x135/0x150 [ 1457.367362] ? kthread_create_on_node+0x60/0x60 [ 1457.367934] ret_from_fork+0x22/0x30 [ 1457.368388] Modules linked in: nvme_loop(OE) nvmet(OE) nvme_fabrics(OE) null_blk nvme(OE) nvme_corer [ 1457.368414] ata_piix crc32c_intel virtio_pci libata virtio_ring serio_raw t10_pi virtio floppy dm_] [ 1457.380849] CR2: 0000000000000000 [ 1457.381288] ---[ end trace c6cab61bfd1f68fd ]--- [ 1457.381861] RIP: 0010:blk_mq_free_request+0xe/0x110 [ 1457.382469] Code: 3f ff ff ff 83 f8 01 75 0d 4c 89 e7 e8 1b db ff ff e9 2d ff ff ff 0f 0b eb ef 66 8 [ 1457.384749] RSP: 0018:ffffc900035b7de0 EFLAGS: 00010282 [ 1457.385393] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000002 [ 1457.386264] RDX: ffffffffa060bd05 RSI: 0000000000000000 RDI: 0000000000000000 [ 1457.387142] RBP: 0000000000000037 R08: 0000000000000000 R09: 0000000000000000 [ 1457.388029] R10: 0000000000000000 R11: 000000000000006d R12: 0000000000000000 [ 1457.388914] R13: ffff8887ffa68600 R14: 0000000000000000 R15: ffff8888150564c8 [ 1457.389798] FS: 0000000000000000(0000) GS:ffff888814600000(0000) knlGS:0000000000000000 [ 1457.390796] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1457.391508] CR2: 0000000000000000 CR3: 000000081c0ac000 CR4: 00000000003406e0 [ 1457.392525] Kernel panic - not syncing: Fatal exception [ 1457.394138] Kernel Offset: disabled [ 1457.394677] ---[ end Kernel panic - not syncing: Fatal exception ]--- We fix this Oops by adding a new goto label out_put_req and reordering the blk_put_request call to avoid calling blk_put_request() with rq value is set to NULL. Here we also update the rest of the code accordingly. Fixes: 06b7164dfdc0 ("nvmet: add passthru code to process commands") Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvmet: add ns tear down label for pt-cmd handlingChaitanya Kulkarni
In the current implementation before submitting the passthru cmd we may come across error e.g. getting ns from passthru controller, allocating a request from passthru controller, etc. For all the failure cases it only uses single goto label fail_out. In the target code, we follow the pattern to have a separate label for each error out the case when setting up multiple things before the actual action. This patch follows the same pattern and renames generic fail_out label to out_put_ns and updates the error out cases in the nvmet_passthru_execute_cmd() where it is needed. Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme: multipath: round-robin: eliminate "fallback" variableMartin Wilck
If we find an optimized path, we quit the loop immediately. Thus we can use just one variable for the next path, slighly simplifying the code. Signed-off-by: Martin Wilck <mwilck@suse.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme: multipath: round-robin: fix single non-optimized path caseMartin Wilck
If there's only one usable, non-optimized path, nvme_round_robin_path() returns NULL, which is wrong. Fix it by falling back to "old", like in the single optimized path case. Also, if the active path isn't changed, there's no need to re-assign the pointer. Fixes: 3f6e3246db0e ("nvme-multipath: fix logic for non-optimized paths") Signed-off-by: Martin Wilck <mwilck@suse.com> Signed-off-by: Martin George <marting@netapp.com> Reviewed-by: Keith Busch <kbusch@kernel.org> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvme-fc: Fix wrong return value in __nvme_fc_init_request()Tianjia Zhang
On an error exit path, a negative error code should be returned instead of a positive return value. Fixes: e399441de9115 ("nvme-fabrics: Add host support for FC transport") Cc: James Smart <jsmart2021@gmail.com> Signed-off-by: Tianjia Zhang <tianjia.zhang@linux.alibaba.com> Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvmet-passthru: Reject commands with non-sgl flags setLogan Gunthorpe
Any command with a non-SGL flag set (like fuse flags) should be rejected. Fixes: c1fef73f793b ("nvmet: add passthru code to process commands") Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21nvmet: fix a memory leakSagi Grimberg
We forgot to free new_model_number Fixes: 013b7ebe5a0d ("nvmet: make ctrl model configurable") Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21block/rnbd: Ensure err is always initialized in process_rdmaNathan Chancellor
Clang warns: drivers/block/rnbd/rnbd-srv.c:150:6: warning: variable 'err' is used uninitialized whenever 'if' condition is true [-Wsometimes-uninitialized] if (IS_ERR(bio)) { ^~~~~~~~~~~ drivers/block/rnbd/rnbd-srv.c:177:9: note: uninitialized use occurs here return err; ^~~ drivers/block/rnbd/rnbd-srv.c:150:2: note: remove the 'if' if its condition is always false if (IS_ERR(bio)) { ^~~~~~~~~~~~~~~~~~ drivers/block/rnbd/rnbd-srv.c:126:9: note: initialize the variable 'err' to silence this warning int err; ^ = 0 1 warning generated. err is indeed uninitialized when this statement is taken. Ensure that it is assigned the error value of bio before jumping to the error handling label. Fixes: 735d77d4fd28 ("rnbd: remove rnbd_dev_submit_io") Reported-by: Brooke Basile <brookebasile@gmail.com> Signed-off-by: Nathan Chancellor <natechancellor@gmail.com> Acked-by: Jack Wang <jinpu.wang@cloud.ionos.com> Link: https://github.com/ClangBuiltLinux/linux/issues/1134 Signed-off-by: Jens Axboe <axboe@kernel.dk>
2020-08-21Merge tag 'riscv-for-linus-5.9-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux Pull RISC-V fixes from Palmer Dabbelt: - The CLINT driver has been split in two: one to handle the M-mode CLINT (memory mapped and used on NOMMU systems) and one to handle the S-mode CLINT (via SBI). - The addition of SiFive's drivers to rv32_defconfig * tag 'riscv-for-linus-5.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Add SiFive drivers to rv32_defconfig dt-bindings: timer: Add CLINT bindings RISC-V: Remove CLINT related code from timer and arch clocksource/drivers: Add CLINT timer driver RISC-V: Add mechanism to provide custom IPI operations
2020-08-21Merge tag 'for-linus-5.9-rc2-tag' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip Pull xen fixes from Juergen Gross: "One build fix and a minor fix for suppressing a useless warning when booting a Xen dom0 via UEFI" * tag 'for-linus-5.9-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: Fix build error when CONFIG_ACPI is not set/enabled: efi: avoid error message when booting under Xen
2020-08-21Merge tag 'pm-5.9-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fixes from Rafael Wysocki: "These fix a few issues in the operating performance points (OPP) framework. Specifics: - Fix re-enabling of resources in dev_pm_opp_set_rate() (Rajendra Nayak) - Fix OPP table reference counting in error paths (Stephen Boyd)" * tag 'pm-5.9-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: opp: Enable resources again if they were disabled earlier opp: Put opp table in dev_pm_opp_set_rate() if _set_opp_bw() fails opp: Put opp table in dev_pm_opp_set_rate() for empty tables
2020-08-21net: dsa: b53: check for timeoutTom Rix
clang static analysis reports this problem b53_common.c:1583:13: warning: The left expression of the compound assignment is an uninitialized value. The computed value will also be garbage ent.port &= ~BIT(port); ~~~~~~~~ ^ ent is set by a successful call to b53_arl_read(). Unsuccessful calls are caught by an switch statement handling specific returns. b32_arl_read() calls b53_arl_op_wait() which fails with the unhandled -ETIMEDOUT. So add -ETIMEDOUT to the switch statement. Because b53_arl_op_wait() already prints out a message, do not add another one. Fixes: 1da6df85c6fb ("net: dsa: b53: Implement ARL add/del/dump operations") Signed-off-by: Tom Rix <trix@redhat.com> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-21hwmon: (applesmc) check status earlier.Tom Rix
clang static analysis reports this representative problem applesmc.c:758:10: warning: 1st function call argument is an uninitialized value left = be16_to_cpu(*(__be16 *)(buffer + 6)) >> 2; ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ buffer is filled by the earlier call ret = applesmc_read_key(LIGHT_SENSOR_LEFT_KEY, ... This problem is reported because a goto skips the status check. Other similar problems use data from applesmc_read_key before checking the status. So move the checks to before the use. Signed-off-by: Tom Rix <trix@redhat.com> Reviewed-by: Henrik Rydberg <rydberg@bitmath.org> Link: https://lore.kernel.org/r/20200820131932.10590-1-trix@redhat.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-08-21hwmon: (nct7904) Correct divide by 0Jason Baron
We hit a kernel panic due to a divide by 0 in nct7904_read_fan() for the hwmon_fan_min case. Extend the check to hwmon_fan_input case as well for safety. [ 1656.545650] divide error: 0000 [#1] SMP PTI [ 1656.545779] CPU: 12 PID: 18010 Comm: sensors Not tainted 5.4.47 #1 [ 1656.546065] RIP: 0010:nct7904_read+0x1e9/0x510 [nct7904] ... [ 1656.546549] RAX: 0000000000149970 RBX: ffffbd6b86bcbe08 RCX: 0000000000000000 ... [ 1656.547548] Call Trace: [ 1656.547665] hwmon_attr_show+0x32/0xd0 [hwmon] [ 1656.547783] dev_attr_show+0x18/0x50 [ 1656.547898] sysfs_kf_seq_show+0x99/0x120 [ 1656.548013] seq_read+0xd8/0x3e0 [ 1656.548127] vfs_read+0x89/0x130 [ 1656.548234] ksys_read+0x7d/0xb0 [ 1656.548342] do_syscall_64+0x48/0x110 [ 1656.548451] entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fixes: d65a5102a99f5 ("hwmon: (nct7904) Convert to use new hwmon registration API") Signed-off-by: Jason Baron <jbaron@akamai.com> Link: https://lore.kernel.org/r/1598026814-2604-1-git-send-email-jbaron@akamai.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2020-08-21device property: Fix the secondary firmware node handling in ↵Heikki Krogerus
set_primary_fwnode() When the primary firmware node pointer is removed from a device (set to NULL) the secondary firmware node pointer, when it exists, is made the primary node for the device. However, the secondary firmware node pointer of the original primary firmware node is never cleared (set to NULL). To avoid situation where the secondary firmware node pointer is pointing to a non-existing object, clearing it properly when the primary node is removed from a device in set_primary_fwnode(). Fixes: 97badf873ab6 ("device property: Make it possible to use secondary firmware nodes") Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-08-21ACPI: ioremap: avoid redundant rounding to OS page sizeArd Biesheuvel
The arm64 implementation of acpi_os_ioremap() was recently updated to tighten the checks around which parts of memory are permitted to be mapped by ACPI code, which generally only needs access to memory regions that are statically described by firmware, and any attempts to access memory that is in active use by the OS is generally a bug or a hacking attempt. This tightening is based on the EFI memory map, which describes all memory in the system. The AArch64 architecture permits page sizes of 16k and 64k in addition to the EFI default, which is 4k, which means that the EFI memory map may describe regions that cannot be mapped seamlessly if the OS page size is greater than 4k. This is usually not a problem, given that the EFI spec does not permit memory regions requiring different memory attributes to share a 64k page frame, and so the usual rounding to page size performed by ioremap() is sufficient to deal with this. However, this rounding does complicate our EFI memory map permission check, due to the loss of information that occurs when several small regions share a single 64k page frame (where rounding each of them will result in the same 64k single page region). However, due to the fact that the region check occurs *before* the call to ioremap() where the necessary rounding is performed, we can deal with this issue simply by removing the redundant rounding performed by acpi_os_map_iomem(), as it appears to be the only place where the arguments to a call to acpi_os_ioremap() are rounded up. So omit the rounding in the call, and instead, apply the necessary masking when assigning the map->virt member. Fixes: 1583052d111f ("arm64/acpi: disallow AML memory opregions to access kernel memory") Signed-off-by: Ard Biesheuvel <ardb@kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-08-21ACPI: SoC: APD: Check return value of acpi_dev_get_property()Furquan Shaikh
`fch_misc_setup()` uses `acpi_dev_get_property()` to read the value of "is-rv" passed in by BIOS in ACPI tables. However, not all BIOSes might pass in this property and hence it is important to first check the return value of `acpi_dev_get_property()` before referencing the object filled by it. Signed-off-by: Furquan Shaikh <furquan@google.com> [ rjw: Subject edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-08-21cpufreq: replace cpu_logical_map() with read_cpuid_mpir()Sumit Gupta
Commit eaecca9e7710 ("arm64: Fix __cpu_logical_map undefined issue") fixes the issue with building tegra194 cpufreq driver as module. But the fix might cause problem while supporting physical CPU hotplug[1]. This patch fixes the original problem by avoiding use of cpu_logical_map(). Instead calling read_cpuid_mpidr() to get MPIDR on target CPU. [1] https://lore.kernel.org/linux-arm-kernel/20200724131059.GB6521@bogus/ Fixes: df320f89359c ("cpufreq: Add Tegra194 cpufreq driver") Reviewed-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Sumit Gupta <sumitg@nvidia.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> [ rjw: Subject & changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-08-21Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdmaLinus Torvalds
Pull rdma fixes from Jason Gunthorpe: "One regression from 5.8 and a few bugs from earlier kernels: - Various spelling corrections in kernel prints - Bug fixes in hfi1 and bntx_re - Revert a 5.8 patch in hns - Batch update for Mellanox and Cumulus maintainers emails" * tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: MAINTAINERS: Update Mellanox and Cumulus Network addresses to new domain Revert "RDMA/hns: Reserve one sge in order to avoid local length error" RDMA/hfi1: Correct an interlock issue for TID RDMA WRITE request RDMA/bnxt_re: Do not add user qps to flushlist RDMA/core: Fix spelling mistake "Could't" -> "Couldn't" RDMA/usnic: Fix spelling mistake "transistion" -> "transition" RDMA/hns: Fix spelling mistake "epmty" -> "empty"
2020-08-21Merge tag 'drm-fixes-2020-08-21' of git://anongit.freedesktop.org/drm/drmLinus Torvalds
Pull drm fixes from Dave Airlie: "Regular fixes pull for rc2. Usual rc2 doesn't seem too busy, mainly i915 and amdgpu. I'd expect the usual uptick for rc3. amdgpu: - Fix allocation size - SR-IOV fixes - Vega20 SMU feature state caching fix - Fix custom pptable handling - Arcturus golden settings update - Several display fixes - Fixes for Navy Flounder - Misc display fixes - RAS fix amdkfd: - SDMA fix for renoir i915: - Fix device parameter usage for selftest mock i915 device - Fix LPSP capability debugfs NULL dereference - Fix buddy register pagemask table - Fix intel_atomic_check() non-negative return value - Fix selftests passing a random 0 into ilog2() - Fix TGL power well enable/disable ordering - Switch to PMU module refcounting - GVT fixes virtio: - Add missing dma_fence_put() in virtio_gpu_execbuffer_ioctl() - Fix memory leak in virtio_gpu_cleanup_object()" * tag 'drm-fixes-2020-08-21' of git://anongit.freedesktop.org/drm/drm: (34 commits) Revert "drm/amdgpu: disable gfxoff for navy_flounder" drm/i915/tgl: Make sure TC-cold is blocked before enabling TC AUX power wells drm/i915/selftests: Avoid passing a random 0 into ilog2 drm/i915: Fix wrong return value in intel_atomic_check() drm/i915: Update bw_buddy pagemask table drm/i915/display: Check for an LPSP encoder before dereferencing drm/i915: Copy default modparams to mock i915_device drm/i915: Provide the perf pmu.module drm/amd/display: fix pow() crashing when given base 0 drm/amd/display: Reset scrambling on Test Pattern drm/amd/display: fix dcn3 wide timing dsc validation drm/amd/display: Fix DFPstate hang due to view port changed drm/amd/display: Assign correct left shift drm/amd/display: Call DMUB for eDP power control drm/amdkfd: fix the wrong sdma instance query for renoir drm/amdgpu: parse ta firmware for navy_flounder drm/amdgpu: fix NULL pointer access issue when unloading driver drm/amdgpu: fix uninit-value in arcturus_log_thermal_throttling_event() drm/amdgpu: disable gfxoff for navy_flounder drm/amdgpu/display: use GFP_ATOMIC in dcn20_validate_bandwidth_internal ...
2020-08-21mmc: sdhci-pci: Fix SDHCI_RESET_ALL for CQHCI for Intel GLK-based controllersAdrian Hunter
For Intel controllers, SDHCI_RESET_ALL resets also CQHCI registers. Normally, SDHCI_RESET_ALL is not used while CQHCI is enabled, but that can happen on the error path. e.g. if mmc_cqe_recovery() fails, mmc_blk_reset() is called which, for a eMMC that does not support HW Reset, will cycle the bus power and the driver will perform SDHCI_RESET_ALL. So whenever performing SDHCI_RESET_ALL ensure CQHCI is deactivated. That will force the driver to reinitialize CQHCI when it is next used. A similar change was done already for sdhci-msm, and other drivers using CQHCI might benefit from a similar change, if they also have CQHCI reset by SDHCI_RESET_ALL. Fixes: 8ee82bda230fc9 ("mmc: sdhci-pci: Add CQHCI support for Intel GLK") Cc: stable@vger.kernel.org # 5.4.x: 0ffa6cfbd949: mmc: cqhci: Add cqhci_deactivate() Cc: stable@vger.kernel.org # 5.4+ Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/20200819121848.16967-1-adrian.hunter@intel.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-08-21mmc: sdhci-acpi: Fix HS400 tuning for AMDI0040Raul E Rangel
The AMD eMMC Controller can only use the tuned clock while in HS200 and HS400 mode. If we switch to a different mode, we need to disable the tuned clock. If we have previously performed tuning and switch back to HS200 or HS400, we can re-enable the tuned clock. Previously the tuned clock was not getting disabled when switching to DDR52 which is part of the HS400 tuning sequence. Fixes: 34597a3f60b1 ("mmc: sdhci-acpi: Add support for ACPI HID of AMD Controller with HS400") Signed-off-by: Raul E Rangel <rrangel@chromium.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Link: https://lore.kernel.org/r/20200819125832.v2.1.Ie8f0689ec9f449203328b37409d1cf06b565f331@changeid Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
2020-08-21crypto: sa2ul - add Kconfig selects to fix build errorRandy Dunlap
sa2ul.c uses sha{1,256,512}_zero_message_hash, so select the Kconfig symbols that provide those, like other crypto drivers do. Fixes this build error: ld: drivers/crypto/sa2ul.o: in function `sa_sha_digest': sa2ul.c:(.text+0x2b25): undefined reference to `sha512_zero_message_hash' Fixes: 7694b6ca649f ("crypto: sa2ul - Add crypto driver") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Reported-by: Randy Dunlap <rdunlap@infradead.org> # 2020-07-29 Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: "David S. Miller" <davem@davemloft.net> Cc: linux-crypto@vger.kernel.org Cc: Tero Kristo <t-kristo@ti.com> Cc: Keerthy <j-keerthy@ti.com> Reviewed-by: Keerthy <j-keerthy@ti.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-08-21crypto: ingenic - Drop kfree for memory allocated with devm_kzallocWei Yongjun
It's not necessary to free memory allocated with devm_kzalloc and using kfree leads to a double free. Fixes: 190873a0ea45 ("crypto: ingenic - Add hardware RNG for Ingenic JZ4780 and X1000") Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Reviewed-by: 周琰杰 (Zhou Yanjie) <zhouyanjie@wanyeetech.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-08-21crypto: qat - add delay before polling mailboxGiovanni Cabiddu
The mailbox CSR register has a write latency and requires a delay before being read. This patch replaces readl_poll_timeout with read_poll_timeout that allows to sleep before read. The initial sleep was removed when the mailbox poll loop was replaced with readl_poll_timeout. Fixes: a79d471c6510 ("crypto: qat - update timeout logic in put admin msg") Signed-off-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-08-21Merge tag 'drm-intel-fixes-2020-08-20' of ↵Dave Airlie
git://anongit.freedesktop.org/drm/drm-intel into drm-fixes drm/i915 fixes for v5.9-rc2: - GVT fixes - Fix device parameter usage for selftest mock i915 device - Fix LPSP capability debugfs NULL dereference - Fix buddy register pagemask table - Fix intel_atomic_check() non-negative return value - Fix selftests passing a random 0 into ilog2() - Fix TGL power well enable/disable ordering - Switch to PMU module refcounting Signed-off-by: Dave Airlie <airlied@redhat.com> From: Jani Nikula <jani.nikula@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/87a6yp7jp3.fsf@intel.com
2020-08-21Merge tag 'amd-drm-fixes-5.9-2020-08-20' of ↵Dave Airlie
git://people.freedesktop.org/~agd5f/linux into drm-fixes amd-drm-fixes-5.9-2020-08-20: amdgpu: - Fixes for Navy Flounder - Misc display fixes - RAS fix amdkfd: - SDMA fix for renoir Signed-off-by: Dave Airlie <airlied@redhat.com> From: Alex Deucher <alexdeucher@gmail.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200820041938.3928-1-alexander.deucher@amd.com
2020-08-20hv_netvsc: Fix the queue_mapping in netvsc_vf_xmit()Haiyang Zhang
netvsc_vf_xmit() / dev_queue_xmit() will call VF NIC’s ndo_select_queue or netdev_pick_tx() again. They will use skb_get_rx_queue() to get the queue number, so the “skb->queue_mapping - 1” will be used. This may cause the last queue of VF not been used. Use skb_record_rx_queue() here, so that the skb_get_rx_queue() called later will get the correct queue number, and VF will be able to use all queues. Fixes: b3bf5666a510 ("hv_netvsc: defer queue selection to VF") Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-20hv_netvsc: Remove "unlikely" from netvsc_select_queueHaiyang Zhang
When using vf_ops->ndo_select_queue, the number of queues of VF is usually bigger than the synthetic NIC. This condition may happen often. Remove "unlikely" from the comparison of ndev->real_num_tx_queues. Fixes: b3bf5666a510 ("hv_netvsc: defer queue selection to VF") Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-20Merge tag 'pci-v5.9-fixes-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci Pull PCI fix from Bjorn Helgaas: "Fix P2PDMA build issue (Christoph Hellwig)" * tag 'pci-v5.9-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: PCI/P2PDMA: Fix build without DMA ops
2020-08-20sfc: fix build warnings on 32-bitEdward Cree
Truncation of DMA_BIT_MASK to 32-bit dma_addr_t is semantically safe, but the compiler was warning because it was happening implicitly. Insert explicit casts to suppress the warnings. Reported-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Edward Cree <ecree@solarflare.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> # build-tested Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-20net: phy: mscc: Fix a couple of spelling mistakes "spcified" -> "specified"Kaige Li
There are a couple of spelling mistakes in comment text. Fix these. Signed-off-by: Kaige Li <likaige@loongson.cn> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-20RISC-V: Remove CLINT related code from timer and archAnup Patel
Right now the RISC-V timer driver is convoluted to support: 1. Linux RISC-V S-mode (with MMU) where it will use TIME CSR for clocksource and SBI timer calls for clockevent device. 2. Linux RISC-V M-mode (without MMU) where it will use CLINT MMIO counter register for clocksource and CLINT MMIO compare register for clockevent device. We now have a separate CLINT timer driver which also provide CLINT based IPI operations so let's remove CLINT MMIO related code from arch/riscv directory and RISC-V timer driver. Signed-off-by: Anup Patel <anup.patel@wdc.com> Tested-by: Emil Renner Berhing <kernel@esmil.dk> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-08-20clocksource/drivers: Add CLINT timer driverAnup Patel
We add a separate CLINT timer driver for Linux RISC-V M-mode (i.e. RISC-V NoMMU kernel). The CLINT MMIO device provides three things: 1. 64bit free running counter register 2. 64bit per-CPU time compare registers 3. 32bit per-CPU inter-processor interrupt registers Unlike other timer devices, CLINT provides IPI registers along with timer registers. To use CLINT IPI registers, the CLINT timer driver provides IPI related callbacks to arch/riscv. Signed-off-by: Anup Patel <anup.patel@wdc.com> Tested-by: Emil Renner Berhing <kernel@esmil.dk> Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org> Reviewed-by: Atish Patra <atish.patra@wdc.com> Reviewed-by: Palmer Dabbelt <palmerdabbelt@google.com> Signed-off-by: Palmer Dabbelt <palmerdabbelt@google.com>
2020-08-20Merge tag 'dma-mapping-5.9-1' of git://git.infradead.org/users/hch/dma-mappingLinus Torvalds
Pull dma-mapping fixes from Christoph Hellwig: "Fix more fallout from the dma-pool changes (Nicolas Saenz Julienne, me)" * tag 'dma-mapping-5.9-1' of git://git.infradead.org/users/hch/dma-mapping: dma-pool: Only allocate from CMA when in same memory zone dma-pool: fix coherent pool allocations for IOMMU mappings
2020-08-20dax: do not print error message for non-persistent memory block deviceAdrian Huang
Commit 231609785cbf ("dax: print error message by pr_info() in __generic_fsdax_supported()") happens to print the following error message during booting when the non-persistent memory block devices are configured by device mapper. Those error messages are caused by the variable 'dax_dev' is NULL. Users might be confused with those error messages since they do not use the persistent memory device. Moreover, users might scare about "what's wrong with my disks" because they see the 'error' and 'failed' keywords. # dmesg | grep fail sdk3: error: dax access failed (-95) sdk3: error: dax access failed (-95) sdk3: error: dax access failed (-95) sdk3: error: dax access failed (-95) sdk3: error: dax access failed (-95) sdk3: error: dax access failed (-95) sdk3: error: dax access failed (-95) sdk3: error: dax access failed (-95) sdk3: error: dax access failed (-95) sdb3: error: dax access failed (-95) sdb3: error: dax access failed (-95) sdb3: error: dax access failed (-95) sdb3: error: dax access failed (-95) sdb3: error: dax access failed (-95) sdb3: error: dax access failed (-95) sdb3: error: dax access failed (-95) sdb3: error: dax access failed (-95) sdb3: error: dax access failed (-95) # lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 1.1T 0 disk ├─sda1 8:1 0 156M 0 part ├─sda2 8:2 0 40G 0 part └─sda3 8:3 0 1.1T 0 part sdb 8:16 0 1.1T 0 disk ├─sdb1 8:17 0 600M 0 part ├─sdb2 8:18 0 1G 0 part └─sdb3 8:19 0 1.1T 0 part ├─rhel00-swap 254:3 0 4G 0 lvm ├─rhel00-home 254:4 0 1T 0 lvm └─rhel00-root 254:5 0 50G 0 lvm sdc 8:32 0 1.1T 0 disk sdd 8:48 0 1.1T 0 disk sde 8:64 0 1.1T 0 disk sdf 8:80 0 1.1T 0 disk sdg 8:96 0 1.1T 0 disk sdh 8:112 0 3.3T 0 disk ├─sdh1 8:113 0 500M 0 part /boot/efi ├─sdh2 8:114 0 40G 0 part / ├─sdh3 8:115 0 2.9T 0 part /home └─sdh4 8:116 0 314.6G 0 part [SWAP] sdi 8:128 0 1.1T 0 disk sdj 8:144 0 3.3T 0 disk ├─sdj1 8:145 0 512M 0 part └─sdj2 8:146 0 3.3T 0 part sdk 8:160 0 119.2G 0 disk ├─sdk1 8:161 0 200M 0 part ├─sdk2 8:162 0 1G 0 part └─sdk3 8:163 0 118G 0 part ├─rhel-swap 254:0 0 4G 0 lvm ├─rhel-home 254:1 0 64G 0 lvm └─rhel-root 254:2 0 50G 0 lvm sdl 8:176 0 119.2G 0 disk The call path is shown as follows: dm_table_determine_type dm_table_supports_dax device_supports_dax generic_fsdax_supported __generic_fsdax_supported With the disk configuration listing from the command 'lsblk', the member 'dev->dax_dev' of the block devices 'sdb3' and 'sdk3' (configured by device mapper) is NULL in function generic_fsdax_supported() because the member is configured in function open_table_device(). To prevent the confusing error messages in this scenario (this is normal behavior), just print those error messages by pr_debug() by checking if dax_dev is NULL and the block device does not support DAX. Link: https://lore.kernel.org/r/20200819154236.24191-1-adrianhuang0701@gmail.com Fixes: 231609785cbf ("dax: print error message by pr_info() in __generic_fsdax_supported()") Cc: Coly Li <colyli@suse.de> Cc: Dan Williams <dan.j.williams@intel.com> Cc: Alasdair Kergon <agk@redhat.com> Cc: Mike Snitzer <snitzer@redhat.com> Acked-by: Coly Li <colyli@suse.de> Signed-off-by: Adrian Huang <ahuang12@lenovo.com> Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
2020-08-20Revert "RDMA/hns: Reserve one sge in order to avoid local length error"Weihang Li
This patch caused some issues on SEND operation, and it should be reverted to make the drivers work correctly. There will be a better solution that has been tested carefully to solve the original problem. This reverts commit 711195e57d341e58133d92cf8aaab1db24e4768d. Fixes: 711195e57d34 ("RDMA/hns: Reserve one sge in order to avoid local length error") Link: https://lore.kernel.org/r/1597829984-20223-1-git-send-email-liweihang@huawei.com Signed-off-by: Weihang Li <liweihang@huawei.com> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
generated by cgit (git 2.34.1) at 2025-09-13 03:55:25 +0000