From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Mathias Nyman <mathias.nyman@linux.intel.com>,
stable@kernel.org
Subject: [PATCH 4.19 097/120] usb: hub: Fix link power management max exit latency (MEL) calculations
Date: Mon, 26 Jul 2021 17:39:09 +0200 [thread overview]
Message-ID: <20210726153835.519331431@linuxfoundation.org> (raw)
In-Reply-To: <20210726153832.339431936@linuxfoundation.org>
From: Mathias Nyman <mathias.nyman@linux.intel.com>
commit 1bf2761c837571a66ec290fb66c90413821ffda2 upstream.
Maximum Exit Latency (MEL) value is used by host to know how much in
advance it needs to start waking up a U1/U2 suspended link in order to
service a periodic transfer in time.
Current MEL calculation only includes the time to wake up the path from
U1/U2 to U0. This is called tMEL1 in USB 3.1 section C 1.5.2
Total MEL = tMEL1 + tMEL2 +tMEL3 + tMEL4 which should additinally include:
- tMEL2 which is the time it takes for PING message to reach device
- tMEL3 time for device to process the PING and submit a PING_RESPONSE
- tMEL4 time for PING_RESPONSE to traverse back upstream to host.
Add the missing tMEL2, tMEL3 and tMEL4 to MEL calculation.
Cc: <stable@kernel.org> # v3.5
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20210715150122.1995966-1-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/usb/core/hub.c | 52 ++++++++++++++++++++++++++-----------------------
1 file changed, 28 insertions(+), 24 deletions(-)
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -45,6 +45,7 @@
#define USB_TP_TRANSMISSION_DELAY 40 /* ns */
#define USB_TP_TRANSMISSION_DELAY_MAX 65535 /* ns */
+#define USB_PING_RESPONSE_TIME 400 /* ns */
/* Protect struct usb_device->state and ->children members
* Note: Both are also protected by ->dev.sem, except that ->state can
@@ -179,8 +180,9 @@ int usb_device_supports_lpm(struct usb_d
}
/*
- * Set the Maximum Exit Latency (MEL) for the host to initiate a transition from
- * either U1 or U2.
+ * Set the Maximum Exit Latency (MEL) for the host to wakup up the path from
+ * U1/U2, send a PING to the device and receive a PING_RESPONSE.
+ * See USB 3.1 section C.1.5.2
*/
static void usb_set_lpm_mel(struct usb_device *udev,
struct usb3_lpm_parameters *udev_lpm_params,
@@ -190,35 +192,37 @@ static void usb_set_lpm_mel(struct usb_d
unsigned int hub_exit_latency)
{
unsigned int total_mel;
- unsigned int device_mel;
- unsigned int hub_mel;
/*
- * Calculate the time it takes to transition all links from the roothub
- * to the parent hub into U0. The parent hub must then decode the
- * packet (hub header decode latency) to figure out which port it was
- * bound for.
- *
- * The Hub Header decode latency is expressed in 0.1us intervals (0x1
- * means 0.1us). Multiply that by 100 to get nanoseconds.
+ * tMEL1. time to transition path from host to device into U0.
+ * MEL for parent already contains the delay up to parent, so only add
+ * the exit latency for the last link (pick the slower exit latency),
+ * and the hub header decode latency. See USB 3.1 section C 2.2.1
+ * Store MEL in nanoseconds
*/
total_mel = hub_lpm_params->mel +
- (hub->descriptor->u.ss.bHubHdrDecLat * 100);
+ max(udev_exit_latency, hub_exit_latency) * 1000 +
+ hub->descriptor->u.ss.bHubHdrDecLat * 100;
/*
- * How long will it take to transition the downstream hub's port into
- * U0? The greater of either the hub exit latency or the device exit
- * latency.
- *
- * The BOS U1/U2 exit latencies are expressed in 1us intervals.
- * Multiply that by 1000 to get nanoseconds.
+ * tMEL2. Time to submit PING packet. Sum of tTPTransmissionDelay for
+ * each link + wHubDelay for each hub. Add only for last link.
+ * tMEL4, the time for PING_RESPONSE to traverse upstream is similar.
+ * Multiply by 2 to include it as well.
*/
- device_mel = udev_exit_latency * 1000;
- hub_mel = hub_exit_latency * 1000;
- if (device_mel > hub_mel)
- total_mel += device_mel;
- else
- total_mel += hub_mel;
+ total_mel += (__le16_to_cpu(hub->descriptor->u.ss.wHubDelay) +
+ USB_TP_TRANSMISSION_DELAY) * 2;
+
+ /*
+ * tMEL3, tPingResponse. Time taken by device to generate PING_RESPONSE
+ * after receiving PING. Also add 2100ns as stated in USB 3.1 C 1.5.2.4
+ * to cover the delay if the PING_RESPONSE is queued behind a Max Packet
+ * Size DP.
+ * Note these delays should be added only once for the entire path, so
+ * add them to the MEL of the device connected to the roothub.
+ */
+ if (!hub->hdev->parent)
+ total_mel += USB_PING_RESPONSE_TIME + 2100;
udev_lpm_params->mel = total_mel;
}
next prev parent reply other threads:[~2021-07-26 16:09 UTC|newest]
Thread overview: 130+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-26 15:37 [PATCH 4.19 000/120] 4.19.199-rc1 review Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 001/120] ARM: dts: gemini: rename mdio to the right name Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 002/120] ARM: dts: gemini: add device_type on pci Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 003/120] ARM: dts: rockchip: fix pinctrl sleep nodename for rk3036-kylin and rk3288 Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 004/120] arm64: dts: rockchip: fix pinctrl sleep nodename for rk3399.dtsi Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 005/120] ARM: dts: rockchip: Fix the timer clocks order Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 006/120] ARM: dts: rockchip: Fix IOMMU nodes properties on rk322x Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 007/120] ARM: dts: rockchip: Fix power-controller node names for rk3288 Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 008/120] arm64: dts: rockchip: Fix power-controller node names for rk3328 Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 009/120] reset: ti-syscon: fix to_ti_syscon_reset_data macro Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 010/120] ARM: brcmstb: dts: fix NAND nodes names Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 011/120] ARM: Cygnus: " Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 012/120] ARM: NSP: " Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 013/120] ARM: dts: BCM63xx: Fix " Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 014/120] ARM: dts: Hurricane 2: " Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 015/120] ARM: dts: imx6: phyFLEX: Fix UART hardware flow control Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 016/120] ARM: imx: pm-imx5: Fix references to imx5_cpu_suspend_info Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 017/120] rtc: mxc_v2: add missing MODULE_DEVICE_TABLE Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 018/120] ARM: dts: stm32: fix gpio-keys node on STM32 MCU boards Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 019/120] ARM: dts: stm32: fix RCC node name on stm32f429 MCU Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 020/120] ARM: dts: stm32: fix timer nodes on STM32 MCU to prevent warnings Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 021/120] arm64: dts: juno: Update SCPI nodes as per the YAML schema Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 022/120] ARM: dts: rockchip: fix supply properties in io-domains nodes Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 023/120] ARM: dts: stm32: fix i2c node name on stm32f746 to prevent warnings Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 024/120] ARM: dts: stm32: move stmmac axi config in ethernet node on stm32mp15 Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 025/120] soc/tegra: fuse: Fix Tegra234-only builds Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 026/120] arm64: dts: ls208xa: remove bus-num from dspi node Greg Kroah-Hartman
2021-07-26 15:37 ` [PATCH 4.19 027/120] thermal/core: Correct function name thermal_zone_device_unregister() Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 028/120] kbuild: mkcompile_h: consider timestamp if KBUILD_BUILD_TIMESTAMP is set Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 029/120] rtc: max77686: Do not enforce (incorrect) interrupt trigger type Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 030/120] scsi: aic7xxx: Fix unintentional sign extension issue on left shift of u8 Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 031/120] scsi: libsas: Add LUN number check in .slave_alloc callback Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 032/120] scsi: libfc: Fix array index out of bound exception Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 033/120] sched/fair: Fix CFS bandwidth hrtimer expiry type Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 034/120] mm: slab: fix kmem_cache_create failed when sysfs node not destroyed Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 035/120] dm writecache: return the exact table values that were set Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 036/120] dm writecache: fix writing beyond end of underlying device when shrinking Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 037/120] net: dsa: mv88e6xxx: enable .rmu_disable() on Topaz Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 038/120] net: ipv6: fix return value of ip6_skb_dst_mtu Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 039/120] netfilter: ctnetlink: suspicious RCU usage in ctnetlink_dump_helpinfo Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 040/120] net: bridge: sync fdb to new unicast-filtering ports Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 041/120] net: bcmgenet: Ensure all TX/RX queues DMAs are disabled Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 042/120] net: moxa: fix UAF in moxart_mac_probe Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 043/120] net: qcom/emac: fix UAF in emac_remove Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 044/120] net: ti: fix UAF in tlan_remove_one Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 045/120] net: send SYNACK packet with accepted fwmark Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 046/120] net: validate lwtstate->data before returning from skb_tunnel_info() Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 047/120] dma-buf/sync_file: Dont leak fences on merge failure Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 048/120] tcp: annotate data races around tp->mtu_info Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 049/120] ipv6: tcp: drop silly ICMPv6 packet too big messages Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 050/120] bpftool: Properly close va_list ap by va_end() on error Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 051/120] udp: annotate data races around unix_sk(sk)->gso_size Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 052/120] net: ip_tunnel: fix mtu calculation for ETHER tunnel devices Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 053/120] igb: Fix use-after-free error during reset Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 054/120] ixgbe: Fix an error handling path in ixgbe_probe() Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 055/120] igb: Fix an error handling path in igb_probe() Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 056/120] fm10k: Fix an error handling path in fm10k_probe() Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 057/120] e1000e: Fix an error handling path in e1000_probe() Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 058/120] iavf: Fix an error handling path in iavf_probe() Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 059/120] igb: Check if num of q_vectors is smaller than max before array access Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 060/120] igb: Fix position of assignment to *ring Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 061/120] ipv6: fix disable_policy for fwd packets Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 062/120] nvme-pci: do not call nvme_dev_remove_admin from nvme_remove Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 063/120] perf map: Fix dso->nsinfo refcounting Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 064/120] perf probe: " Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 065/120] perf test session_topology: Delete session->evlist Greg Kroah-Hartman
2021-07-27 3:44 ` Naresh Kamboju
2021-07-27 6:10 ` Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 066/120] perf dso: Fix memory leak in dso__new_map() Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 067/120] perf script: Fix memory threads and cpus leaks on exit Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 068/120] perf lzma: Close lzma stream " Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 069/120] perf test bpf: Free obj_buf Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 070/120] perf probe-file: Delete namelist in del_events() on the error path Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 071/120] spi: mediatek: fix fifo rx mode Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 072/120] liquidio: Fix unintentional sign extension issue on left shift of u16 Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 073/120] s390/bpf: Perform r1 range checking before accessing jit->seen_reg[r1] Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 074/120] bpftool: Check malloc return value in mount_bpffs_for_pin Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 075/120] net: fix uninit-value in caif_seqpkt_sendmsg Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 076/120] net: decnet: Fix sleeping inside in af_decnet Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 077/120] KVM: PPC: Fix kvm_arch_vcpu_ioctl vcpu_load leak Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 078/120] netrom: Decrease sock refcount when sock timers expire Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 079/120] scsi: iscsi: Fix iface sysfs attr detection Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 080/120] scsi: target: Fix protect handling in WRITE SAME(32) Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 081/120] spi: cadence: Correct initialisation of runtime PM again Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 082/120] net/tcp_fastopen: fix data races around tfo_active_disable_stamp Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 083/120] net/sched: act_skbmod: Skip non-Ethernet packets Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 084/120] nvme-pci: dont WARN_ON in nvme_reset_work if ctrl.state is not RESETTING Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 085/120] Revert "USB: quirks: ignore remote wake-up on Fibocom L850-GL LTE modem" Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 086/120] sctp: update active_key for asoc when old key is being replaced Greg Kroah-Hartman
2021-07-26 15:38 ` [PATCH 4.19 087/120] net: sched: cls_api: Fix the the wrong parameter Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 088/120] drm/panel: raspberrypi-touchscreen: Prevent double-free Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 089/120] proc: Avoid mixing integer types in mem_rw() Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 090/120] [PATCH] Revert "MIPS: add PMD table accounting into MIPSpmd_alloc_one" Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 091/120] s390/ftrace: fix ftrace_update_ftrace_func implementation Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 092/120] ALSA: usb-audio: Add registration quirk for JBL Quantum headsets Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 093/120] ALSA: sb: Fix potential ABBA deadlock in CSP driver Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 094/120] xhci: Fix lost USB 2 remote wake Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 095/120] KVM: PPC: Book3S: Fix H_RTAS rets buffer overflow Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 096/120] usb: hub: Disable USB 3 device initiated lpm if exit latency is too high Greg Kroah-Hartman
2021-07-26 15:39 ` Greg Kroah-Hartman [this message]
2021-07-26 15:39 ` [PATCH 4.19 098/120] USB: usb-storage: Add LaCie Rugged USB3-FW to IGNORE_UAS Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 099/120] usb: max-3421: Prevent corruption of freed memory Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 100/120] usb: renesas_usbhs: Fix superfluous irqs happen after usb_pkt_pop() Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 101/120] USB: serial: option: add support for u-blox LARA-R6 family Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 102/120] USB: serial: cp210x: fix comments for GE CS1000 Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 103/120] USB: serial: cp210x: add ID for CEL EM3588 USB ZigBee stick Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 104/120] usb: dwc2: gadget: Fix sending zero length packet in DDMA mode Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 105/120] tracing: Fix bug in rb_per_cpu_empty() that might cause deadloop Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 106/120] media: ngene: Fix out-of-bounds bug in ngene_command_config_free_buf() Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 107/120] ixgbe: Fix packet corruption due to missing DMA sync Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 108/120] selftest: use mmap instead of posix_memalign to allocate memory Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 109/120] nds32: fix up stack guard gap Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 110/120] drm: Return -ENOTTY for non-drm ioctls Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 111/120] KVM: do not assume PTE is writable after follow_pfn Greg Kroah-Hartman
2021-07-26 21:17 ` Sudip Mukherjee
2021-07-26 22:02 ` Paolo Bonzini
2021-07-27 8:33 ` Ovidiu Panait
2021-07-26 15:39 ` [PATCH 4.19 112/120] KVM: do not allow mapping valid but non-reference-counted pages Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 113/120] net: dsa: mv88e6xxx: use correct .stats_set_histogram() on Topaz Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 114/120] net: bcmgenet: ensure EXT_ENERGY_DET_MASK is clear Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 115/120] iio: accel: bma180: Use explicit member assignment Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 116/120] iio: accel: bma180: Fix BMA25x bandwidth register values Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 117/120] btrfs: compression: dont try to compress if we dont have enough pages Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 118/120] PCI: Mark AMD Navi14 GPU ATS as broken Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 119/120] spi: spi-fsl-dspi: Fix a resource leak in an error handling path Greg Kroah-Hartman
2021-07-26 15:39 ` [PATCH 4.19 120/120] xhci: add xhci_get_virt_ep() helper Greg Kroah-Hartman
2021-07-26 19:35 ` [PATCH 4.19 000/120] 4.19.199-rc1 review Guenter Roeck
2021-07-27 3:56 ` Naresh Kamboju
2021-07-27 6:12 ` Greg Kroah-Hartman
2021-07-27 0:36 ` Shuah Khan
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