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2021-03-27of: Fix kerneldoc output formattingRob Herring2-138/+136
The indentation of the kerneldoc comments affects the output formatting. Leading tabs in particular don't work, sections need to be indented under the section header, and several code blocks are reformatted. Cc: Frank Rowand <frowand.list@gmail.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org> Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> Link: https://lore.kernel.org/r/20210326192606.3702739-1-robh@kernel.org
2021-03-27interconnect: qcom: Add SM8350 interconnect provider driverVinod Koul4-0/+812
Add driver for the Qualcomm interconnect buses found in SM8350 based platforms. The topology consists of several NoCs that are controlled by a remote processor that collects the aggregated bandwidth for each master-slave pairs. Generated from downstream interconnect driver written by David Dai Signed-off-by: Vinod Koul <vkoul@kernel.org> Link: https://lore.kernel.org/r/20210318094617.951212-3-vkoul@kernel.org Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
2021-03-27Merge tag 'icc-5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc into char-misc-linusGreg Kroah-Hartman3-9/+11
Georgi writes: interconnect fixes for v5.12 This contains a few tiny drivers and core fixes that have been reported during this cycle. - msm8939: Remove rpm-ids from non-RPM nodes - core: Fix error return code of icc_link_destroy() - core: Fix kerneldoc warning Signed-off-by: Georgi Djakov <djakov@kernel.org> * tag 'icc-5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/djakov/icc: interconnect: Fix kerneldoc warning interconnect: core: fix error return code of icc_link_destroy() interconnect: qcom: msm8939: remove rpm-ids from non-RPM nodes
2021-03-27usb: cdnsp: Fixes issue with dequeuing requests after disabling endpointPawel Laszczak1-0/+4
Patch fixes the bug: BUG: kernel NULL pointer dereference, address: 0000000000000050 PGD 0 P4D 0 Oops: 0002 [#1] SMP PTI CPU: 0 PID: 4137 Comm: uvc-gadget Tainted: G OE 5.10.0-next-20201214+ #3 Hardware name: ASUS All Series/Q87T, BIOS 0908 07/22/2014 RIP: 0010:cdnsp_remove_request+0xe9/0x530 [cdnsp_udc_pci] Code: 01 00 00 31 f6 48 89 df e8 64 d4 ff ff 48 8b 43 08 48 8b 13 45 31 f6 48 89 42 08 48 89 10 b8 98 ff ff ff 48 89 1b 48 89 5b 08 <41> 83 6d 50 01 41 83 af d0 00 00 00 01 41 f6 84 24 78 20 00 00 08 RSP: 0018:ffffb68d00d07b60 EFLAGS: 00010046 RAX: 00000000ffffff98 RBX: ffff9d29c57fbf00 RCX: 0000000000001400 RDX: ffff9d29c57fbf00 RSI: 0000000000000000 RDI: ffff9d29c57fbf00 RBP: ffffb68d00d07bb0 R08: ffff9d2ad9510a00 R09: ffff9d2ac011c000 R10: ffff9d2a12b6e760 R11: 0000000000000000 R12: ffff9d29d3fb8000 R13: 0000000000000000 R14: 0000000000000000 R15: ffff9d29d3fb88c0 FS: 0000000000000000(0000) GS:ffff9d2adba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000050 CR3: 0000000102164005 CR4: 00000000001706f0 Call Trace: cdnsp_ep_dequeue+0x3c/0x90 [cdnsp_udc_pci] cdnsp_gadget_ep_dequeue+0x3f/0x80 [cdnsp_udc_pci] usb_ep_dequeue+0x21/0x70 [udc_core] uvcg_video_enable+0x19d/0x220 [usb_f_uvc] uvc_v4l2_release+0x49/0x90 [usb_f_uvc] v4l2_release+0xa5/0x100 [videodev] __fput+0x99/0x250 ____fput+0xe/0x10 task_work_run+0x75/0xb0 do_exit+0x370/0xb80 do_group_exit+0x43/0xa0 get_signal+0x12d/0x820 arch_do_signal_or_restart+0xb2/0x870 ? __switch_to_asm+0x36/0x70 ? kern_select+0xc6/0x100 exit_to_user_mode_prepare+0xfc/0x170 syscall_exit_to_user_mode+0x2a/0x40 do_syscall_64+0x43/0x80 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe969cf5dd7 Code: Unable to access opcode bytes at RIP 0x7fe969cf5dad. Problem occurs for UVC class. During disconnecting the UVC class disable endpoints and then start dequeuing all requests. This leads to situation where requests are removed twice. The first one in cdnsp_gadget_ep_disable and the second in cdnsp_gadget_ep_dequeue function. Patch adds condition in cdnsp_gadget_ep_dequeue function which allows dequeue requests only from enabled endpoint. Fixes: 3d82904559f4 ("usb: cdnsp: cdns3 Add main part of Cadence USBSSP DRD Driver") Signed-off-by: Pawel Laszczak <pawell@cadence.com> Signed-off-by: Peter Chen <peter.chen@kernel.org>
2021-03-26pata_ipx4xx_cf: fix IRQ checkSergey Shtylyov1-1/+5
The driver's probe() method is written as if platform_get_irq() returns 0 on error, while actually it returns a negative error code (with all the other values considered valid IRQs). Rewrite the driver's IRQ checking code to pass the positive IRQ #s to ata_host_activate(), propagate errors upstream, and treat IRQ0 as error, returning -EINVAL, as the libata code treats 0 as an indication that polling should be used anyway... Fixes: 0df0d0a0ea9f ("[libata] ARM: add ixp4xx PATA driver") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-26pata_arasan_cf: fix IRQ checkSergey Shtylyov1-4/+11
The driver's probe() method is written as if platform_get_irq() returns 0 on error, while actually it returns a negative error code (with all the other values considered valid IRQs). Rewrite the driver's IRQ checking code to pass the positive IRQ #s to ata_host_activate(), propagate upstream -EPROBE_DEFER, and set up the driver to polling mode on (negative) errors and IRQ0 (libata treats IRQ #0 as a polling mode anyway)... Fixes: a480167b23ef ("pata_arasan_cf: Adding support for arasan compact flash host controller") Signed-off-by: Sergey Shtylyov <s.shtylyov@omprussia.ru> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-03-26farsync: use DEFINE_SPINLOCK() for spinlockLiu Jian1-2/+1
spinlock can be initialized automatically with DEFINE_SPINLOCK() rather than explicitly calling spin_lock_init(). Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Liu Jian <liujian56@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: stmmac: Fix kernel panic due to NULL pointer dereference of fpe_cfgMohammad Athari Bin Ismail2-12/+14
In this patch, "net: stmmac: support FPE link partner hand-shaking procedure", priv->plat->fpe_cfg wouldn`t be "devm_kzalloc"ed if dma_cap->frpsel is 0 (Flexible Rx Parser is not supported in SoC) in tc_init(). So, fpe_cfg will be remain as NULL and accessing it will cause kernel panic. To fix this, move the "devm_kzalloc"ing of priv->plat->fpe_cfg before dma_cap->frpsel checking in tc_init(). Additionally, checking of priv->dma_cap.fpesel is added before calling stmmac_fpe_link_state_handle() as only FPE supported SoC is allowed to call the function. Below is the kernel panic dump reported by Marek Szyprowski <m.szyprowski@samsung.com>: meson8b-dwmac ff3f0000.ethernet eth0: PHY [0.0:00] driver [RTL8211F Gigabit Ethernet] (irq=35) meson8b-dwmac ff3f0000.ethernet eth0: No Safety Features support found meson8b-dwmac ff3f0000.ethernet eth0: PTP not supported by HW meson8b-dwmac ff3f0000.ethernet eth0: configuring for phy/rgmii link mode Unable to handle kernel NULL pointer dereference at virtual address 0000000000000001 Mem abort info: ... user pgtable: 4k pages, 48-bit VAs, pgdp=00000000044eb000 [0000000000000001] pgd=0000000000000000, p4d=0000000000000000 Internal error: Oops: 96000004 [#1] PREEMPT SMP Modules linked in: dw_hdmi_i2s_audio dw_hdmi_cec meson_gxl realtek meson_gxbb_wdt snd_soc_meson_axg_sound_card dwmac_generic axg_audio meson_dw_hdmi crct10dif_ce snd_soc_meson_card_utils snd_soc_meson_axg_tdmout panfrost rc_odroid gpu_sched reset_meson_audio_arb meson_ir snd_soc_meson_g12a_tohdmitx snd_soc_meson_axg_frddr sclk_div clk_phase snd_soc_meson_codec_glue dwmac_meson8b snd_soc_meson_axg_fifo stmmac_platform meson_rng meson_drm stmmac rtc_meson_vrtc rng_core meson_canvas pwm_meson dw_hdmi mdio_mux_meson_g12a pcs_xpcs snd_soc_meson_axg_tdm_interface snd_soc_meson_axg_tdm_formatter nvmem_meson_efuse display_connector CPU: 1 PID: 7 Comm: kworker/u8:0 Not tainted 5.12.0-rc4-next-20210325+ Hardware name: Hardkernel ODROID-C4 (DT) Workqueue: events_power_efficient phylink_resolve pstate: 20400009 (nzCv daif +PAN -UAO -TCO BTYPE=--) pc : stmmac_mac_link_up+0x14c/0x348 [stmmac] lr : stmmac_mac_link_up+0x284/0x348 [stmmac] ... Call trace: stmmac_mac_link_up+0x14c/0x348 [stmmac] phylink_resolve+0x104/0x420 process_one_work+0x2a8/0x718 worker_thread+0x48/0x460 kthread+0x134/0x160 ret_from_fork+0x10/0x18 Code: b971ba60 350007c0 f958c260 f9402000 (39400401) ---[ end trace 0c9deb6c510228aa ]--- Fixes: 5a5586112b92 ("net: stmmac: support FPE link partner hand-shaking procedure") Reported-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Mohammad Athari Bin Ismail <mohammad.athari.ismail@intel.com> Tested-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ethernet: remove duplicated includeXu Jia1-1/+0
Remove duplicated include from mtk_ppe_offload.c. Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Xu Jia <xujia39@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: axienet: Enable more clocksRobert Hancock3-11/+35
This driver was only enabling the first clock on the device, regardless of its name. However, this controller logic can have multiple clocks which should all be enabled. Add support for enabling additional clocks. The clock names used are matching those used in the Xilinx version of this driver as well as the Xilinx device tree generator, except for mgt_clk which is not present there. For backward compatibility, if no named clocks are present, the first clock present is used for determining the MDIO bus clock divider. Reviewed-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com> Signed-off-by: Robert Hancock <robert.hancock@calian.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26mld: convert ifmcaddr6 to RCUTaehee Yoo1-3/+3
The ifmcaddr6 has been protected by inet6_dev->lock(rwlock) so that the critical section is atomic context. In order to switch this context, changing locking is needed. The ifmcaddr6 actually already protected by RTNL So if it's converted to use RCU, its control path context can be switched to sleepable. Suggested-by: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Taehee Yoo <ap420073@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: support more than 6 resource groupsAlex Elder3-4/+22
IPA versions 3.0 and 3.1 support up to 8 resource groups. There is some interest in supporting these older versions of the hardware, so update the resource configuration code to program resource limits for these groups if specified. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: record number of groups in dataAlex Elder4-46/+16
The arrays of source and destination resource limits defined in configuration data are of a fixed size--which is the maximum number of resource groups supported for any platform. Most platforms will use fewer than that many groups. Add new members to the ipa_rsrc_group_id enumerated type to define the number of source and destination resource groups are defined for the platform. (This type is defined for each platform in its data file.) Add a new field to the resource configuration data that indicates how many of the source and destination resource groups are actually used for the platform, and initialize it with the count value. This allows us to determine the number of groups defined for the platform without exposing the ipa_rsrc_group_id enumerated type. As a result, we no longer need ipa_resource_group_src_count() and ipa_resource_group_dst_count(), because each platform now defines its supported number of resource groups. So get rid of those two functions. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: pass data for source and dest resource configAlex Elder1-4/+10
Pass the resource data pointer to ipa_resource_config_src() and ipa_resource_config_dst() to be used for configuring resource limits. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: combine source and destation resource typesAlex Elder4-21/+13
The ipa_resource_src and ipa_resource_dst structures are identical in form, so just replace them with a single structure. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: combine source and destination group limitsAlex Elder2-11/+10
Replace IPA_RESOURCE_GROUP_SRC_MAX and IPA_RESOURCE_GROUP_DST_MAX with a single symbol, IPA_RESOURCE_GROUP_MAX. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: move ipa_resource_type definitionAlex Elder3-72/+57
Most platforms have the same set of source and destination resource types. But some older platforms have some additional ones, and it's possible different resources will be used in the future. Move the definition of the ipa_resource_type enumerated type so it is defined for each platform in its configuration data file. This permits each to have a distinct set of resources. Shorten the data files slightly, by putting the min and max limit values on the same line. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: index resource limits with typeAlex Elder4-42/+24
Remove the type field from the ipa_resource_src and ipa_resource_dst structures, and instead use that value as the index into the arrays of source and destination resources. Change ipa_resource_config_src() and ipa_resource_config_dst() so the resource type is passed in as an argument. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: combine resource type definitionsAlex Elder1-16/+15
Combine the ipa_resource_type_src and ipa_resource_type_dst enumerated types into a single enumerated type, ipa_resource_type. Assign value 0 to the first element for the source and destination types, so their numeric values are preserved. Add some additional commentary where these are defined, stating explicitly that code assumes the first source and first destination member must have numeric value 0. Fix the kerneldoc comments for the ipa_gsi_endpoint_data structure. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: add some missing resource limitsAlex Elder1-0/+32
Currently, the SDM845 configuration data defines resource limits for the first two resource groups (for both source and destination resource types). The hardware supports additional resource groups, and we should program the resource limits for those groups as well. Even the "unused" destination resource group (number 2) should have non-zero limits programmed in some cases, to ensure correct operation. Add these missing resource group limit definitions to the SDM845 configuration data. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: identify resource groupsAlex Elder2-37/+57
Define a new ipa_resource_group_id enumerated type, whose members have numeric values that match the resource group number used when programming the hardware. Each platform supports a different number of source and destination resource groups, so define the type separately for each platform in its configuration data file. Use these new symbolic values when specifying the resource group an endpoint is associated with. And use them to index the limits arrays for source and destination resources, making it clearer how these values are used. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: fix bug in resource group limit programmingAlex Elder1-4/+4
If the number of resource groups supported by the hardware is less than a certain number, we return early in ipa_resource_config_src() and ipa_resource_config_dst() (to avoid programming resource limits for non-existent groups). Unfortunately, these checks are off by one. Fix this problem in the four places it occurs. Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: ipa: introduce ipa_resource.cAlex Elder5-189/+234
Separate the IPA resource-related code into a new source file, "ipa_resource.c", and matching header file "ipa_resource.h". Signed-off-by: Alex Elder <elder@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: hns3: split out hclge_tm_vport_tc_info_update()Guojia Liao1-2/+9
hclge_tm_vport_tc_info_update() is bloated, so split it into separate functions for readability and maintainability. Signed-off-by: Guojia Liao <liaoguojia@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: hns3: split function hclge_reset_rebuild()Yufeng Mo1-10/+16
hclge_reset_rebuild() is a bit too long. So add a new function hclge_update_reset_level() to improve readability. Signed-off-by: Yufeng Mo <moyufeng@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: hns3: fix some typos in hclge_main.cHuazhong Tan1-3/+3
s/sucessful/successful/ s/serivce/service/ and remove a redundant new. Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: hns3: fix prototype warningHuazhong Tan1-1/+1
Correct a report warning in hns3_ethtool.c Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: hns3: remove unused parameter from hclge_dbg_dump_loopback()Huazhong Tan1-3/+2
Parameter cm_buf is never used, so remove it. Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: hns3: remove unused parameter from hclge_set_vf_vlan_common()Peng Li1-4/+2
Parameter vf in hclge_set_vf_vlan_common() is unused now, so remove it. Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: hns3: remove redundant query in hclge_config_tm_hw_err_int()Jiaran Zhang1-7/+1
According to the HW manual, the query operation is unnecessary when the TM QCN error event is enabled, so remove it. Signed-off-by: Jiaran Zhang <zhangjiaran@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: hns3: remove redundant blank linesPeng Li6-18/+0
Remove some redundant blank lines. Signed-off-by: Peng Li <lipeng321@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26net: hns3: remove unused code of vmdqJian Shen4-145/+92
Vmdq is not supported yet, the num_vmdq_vport is always 0, it's a bit confusing when using the num_vport, so remove these unused codes of vmdq. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Jian Shen <shenjian15@huawei.com> Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26Merge tag 'mlx5-updates-2021-03-24' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller18-861/+815
Saeed Mahameed says: ==================== mlx5-updates-2021-03-24 mlx5e netdev driver updates: 1) Some cleanups from Colin, Tariq and Saeed. 2) Aya made some trivial refactoring to cleanup and generalize PTP and RQ (Receive Queue) creation and management. Mostly code decoupling and reducing dependencies between the different RX objects in the netdev driver. This is a preparation series for upcoming PTP special RQ creation which will allow coexistence of CQE compression (important performance feature, especially in Multihost systems) and HW TS PTP. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26drm/mst: Enhance MST topology loggingEryk Brol1-11/+48
[why] MST topology print was missing fec logging and pdt printed as an int wasn't clear. vcpi and payload info was printed as an arbitrary series of ints which requires user to know the ordering of the prints, making the logs difficult to use. [how] -add fec logging -add pdt parsing into strings -format vcpi and payload info into tables with headings -clean up topology prints Reviewed-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Signed-off-by: Eryk Brol <eryk.brol@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20210325180614.37060-1-eryk.brol@amd.com
2021-03-26Merge tag 'for-5.12/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dmLinus Torvalds5-12/+32
Pull device mapper fixes from Mike Snitzer: - Fix DM verity target's optional argument processing. - Fix DM core's zoned model and zone sectors checks. - Fix spurious "detected capacity change" pr_info() when creating new DM device. - Fix DM ioctl out of bounds array access in handling of DM_LIST_DEVICES_CMD when no devices exist. * tag 'for-5.12/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm: dm ioctl: fix out of bounds array access when no devices dm: don't report "detected capacity change" on device creation dm table: Fix zoned model check and zone sectors check dm verity: fix DM_VERITY_OPTS_MAX value
2021-03-26dm integrity: add the "reset_recalculate" feature flagMikulas Patocka1-4/+17
Add a new flag "reset_recalculate" that will restart recalculating from the beginning of the device. It can be used if we want to change the hash function. Example: dmsetup remove_all rmmod brd set -e modprobe brd rd_size=1048576 dmsetup create in --table '0 2000000 integrity /dev/ram0 0 16 J 2 internal_hash:sha256 recalculate' sleep 10 dmsetup status dmsetup remove in dmsetup create in --table '0 2000000 integrity /dev/ram0 0 16 J 2 internal_hash:sha3-256 reset_recalculate' Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm persistent data: remove unused return from exit_shadow_spine()Jiapeng Chong2-5/+3
Fix the following coccicheck warnings: ./drivers/md/persistent-data/dm-btree-spine.c:188:5-6: Unneeded variable: "r". Return "0" on line 194. Reported-by: Abaci Robot <abaci@linux.alibaba.com> Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm cache: remove needless request_queue NULL pointer checksXu Wang1-1/+1
Since commit ff9ea323816d ("block, bdi: an active gendisk always has a request_queue associated with it") the request_queue pointer returned from bdev_get_queue() shall never be NULL. Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm thin: remove needless request_queue NULL pointer checkXu Wang1-1/+1
Since commit ff9ea323816d ("block, bdi: an active gendisk always has a request_queue associated with it") the request_queue pointer returned from bdev_get_queue() shall never be NULL. Signed-off-by: Xu Wang <vulab@iscas.ac.cn> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm: unexport dm_{get,put}_table_deviceChristoph Hellwig1-2/+0
These are only used by DM core, DM target modules should only use dm_{get,put}_device. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm ebs: fix a few typosBhaskar Chowdhury1-3/+3
s/retrievd/retrieved/ s/misalignement/misalignment/ s/funtion/function/ Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm ioctl: filter the returned values according to name or uuid prefixMikulas Patocka1-0/+28
If we set non-empty param->name or param->uuid on the DM_LIST_DEVICES_CMD ioctl, the set values are considered filter prefixes. The ioctl will only return entries with matching name or uuid prefix. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm ioctl: return UUID in DM_LIST_DEVICES_CMD resultMikulas Patocka1-3/+17
When LVM needs to find a device with a particular UUID it needs to ask for UUID for each device. This patch returns UUID directly in the list of devices, so that LVM doesn't have to query all the devices with an ioctl. The UUID is returned if the flag DM_UUID_FLAG is set in the parameters. Returning UUID is done in backward-compatible way. There's one unused 32-bit word value after the event number. This patch sets the bit DM_NAME_LIST_FLAG_HAS_UUID if UUID is present and DM_NAME_LIST_FLAG_DOESNT_HAVE_UUID if it isn't (if none of these bits is set, then we have an old kernel that doesn't support returning UUIDs). The UUID is stored after this word. The 'next' value is updated to point after the UUID, so that old version of libdevmapper will skip the UUID without attempting to interpret it. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm ioctl: replace device hash with red-black treeMikulas Patocka1-111/+141
For high numbers of DM devices the 64-entry hash table has non-trivial overhead. Fix this by replacing the hash table with a red-black tree. Reported-by: Zdenek Kabelac <zkabelac@redhat.com> Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm verity: allow only one error handling modeJeongHyeon Lee1-11/+29
If more than one one handling mode is requested during DM verity table load, the last requested mode will be used. Change this to impose more strict checking so that the table load will fail if more than one error handling mode is requested. Signed-off-by: JeongHyeon Lee <jhs2.lee@samsung.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm: remove useless loop in __split_and_process_bioMikulas Patocka1-30/+27
Remove useless "while" loop. If the condition ci.sector_count && !error is true, we go to a branch that ends with "break". If this condition is false, the "while" loop will not be executed again. So, the loop can't be executed more than once. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm writecache: fix flexible_array.cocci warningsJulia Lawall1-1/+1
Zero-length and one-element arrays are deprecated, see Documentation/process/deprecated.rst Flexible-array members should be used instead. Generated by: scripts/coccinelle/misc/flexible_array.cocci CC: Denis Efremov <efremov@linux.com> Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: kernel test robot <lkp@intel.com> Signed-off-by: Julia Lawall <julia.lawall@inria.fr> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26dm ioctl: fix out of bounds array access when no devicesMikulas Patocka1-1/+1
If there are not any dm devices, we need to zero the "dev" argument in the first structure dm_name_list. However, this can cause out of bounds write, because the "needed" variable is zero and len may be less than eight. Fix this bug by reporting DM_BUFFER_FULL_FLAG if the result buffer is too small to hold the "nl->dev" value. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: stable@vger.kernel.org Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2021-03-26Merge tag 'acpi-5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds4-8/+35
Pull ACPI fixes from Rafael Wysocki: "These fix a memory management regression in ACPICA, repair an ACPI blacklist entry damaged inadvertently during the 5.11 cycle and fix the bookkeeping of devices with the same primary device ID in the ACPI core. Specifics: - Make ACPICA use the same object cache consistently when allocating and freeing objects (Vegard Nossum) - Add a callback pointer removed inadvertently during the 5.11 cycle to the ACPI backlight blacklist entry for Sony VPCEH3U1E (Chris Chiu) - Make the ACPI device enumeration core use IDA for creating names of ACPI device objects with the same primary device ID to avoid using duplicate device object names in some cases (Andy Shevchenko)" * tag 'acpi-5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: ACPICA: Always create namespace nodes using acpi_ns_create_node() ACPI: scan: Use unique number for instance_no ACPI: video: Add missing callback back for Sony VPCEH3U1E
2021-03-26Merge tag 'pm-5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pmLinus Torvalds1-6/+39
Pull power management fixes from Rafael Wysocki: "These fix an issue related to device links in the runtime PM framework and debugfs usage in the Energy Model code. Specifics: - Modify the runtime PM device suspend to avoid suspending supplier devices before the consumer device's status changes to RPM_SUSPENDED (Rafael Wysocki) - Change the Energy Model code to prevent it from attempting to create its main debugfs directory too early (Lukasz Luba)" * tag 'pm-5.12-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: PM: EM: postpone creating the debugfs dir till fs_initcall PM: runtime: Defer suspending suppliers