From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org, Zeng Tao <prime.zeng@hisilicon.com>,
Felipe Balbi <felipe.balbi@linux.intel.com>,
Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.19 15/78] usb: dwc3: gadget: Fix the uninitialized link_state when udc starts
Date: Mon, 4 Mar 2019 09:21:58 +0100 [thread overview]
Message-ID: <20190304081626.183536774@linuxfoundation.org> (raw)
In-Reply-To: <20190304081625.508788074@linuxfoundation.org>
4.19-stable review patch. If anyone has any objections, please let me know.
------------------
[ Upstream commit 88b1bb1f3b88e0bf20b05d543a53a5b99bd7ceb6 ]
Currently the link_state is uninitialized and the default value is 0(U0)
before the first time we start the udc, and after we start the udc then
stop the udc, the link_state will be undefined.
We may have the following warnings if we start the udc again with
an undefined link_state:
WARNING: CPU: 0 PID: 327 at drivers/usb/dwc3/gadget.c:294 dwc3_send_gadget_ep_cmd+0x304/0x308
dwc3 100e0000.hidwc3_0: wakeup failed --> -22
[...]
Call Trace:
[<c010f270>] (unwind_backtrace) from [<c010b3d8>] (show_stack+0x10/0x14)
[<c010b3d8>] (show_stack) from [<c034a4dc>] (dump_stack+0x84/0x98)
[<c034a4dc>] (dump_stack) from [<c0118000>] (__warn+0xe8/0x100)
[<c0118000>] (__warn) from [<c0118050>](warn_slowpath_fmt+0x38/0x48)
[<c0118050>] (warn_slowpath_fmt) from [<c0442ec0>](dwc3_send_gadget_ep_cmd+0x304/0x308)
[<c0442ec0>] (dwc3_send_gadget_ep_cmd) from [<c0445e68>](dwc3_ep0_start_trans+0x48/0xf4)
[<c0445e68>] (dwc3_ep0_start_trans) from [<c0446750>](dwc3_ep0_out_start+0x64/0x80)
[<c0446750>] (dwc3_ep0_out_start) from [<c04451c0>](__dwc3_gadget_start+0x1e0/0x278)
[<c04451c0>] (__dwc3_gadget_start) from [<c04452e0>](dwc3_gadget_start+0x88/0x10c)
[<c04452e0>] (dwc3_gadget_start) from [<c045ee54>](udc_bind_to_driver+0x88/0xbc)
[<c045ee54>] (udc_bind_to_driver) from [<c045f29c>](usb_gadget_probe_driver+0xf8/0x140)
[<c045f29c>] (usb_gadget_probe_driver) from [<bf005424>](gadget_dev_desc_UDC_store+0xac/0xc4 [libcomposite])
[<bf005424>] (gadget_dev_desc_UDC_store [libcomposite]) from[<c023d8e0>] (configfs_write_file+0xd4/0x160)
[<c023d8e0>] (configfs_write_file) from [<c01d51e8>] (__vfs_write+0x1c/0x114)
[<c01d51e8>] (__vfs_write) from [<c01d5ff4>] (vfs_write+0xa4/0x168)
[<c01d5ff4>] (vfs_write) from [<c01d6d40>] (SyS_write+0x3c/0x90)
[<c01d6d40>] (SyS_write) from [<c0107400>] (ret_fast_syscall+0x0/0x3c)
Signed-off-by: Zeng Tao <prime.zeng@hisilicon.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/usb/dwc3/gadget.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index f6cd7feeb1c4f..700fb626ad03b 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1864,6 +1864,7 @@ static int __dwc3_gadget_start(struct dwc3 *dwc)
/* begin to receive SETUP packets */
dwc->ep0state = EP0_SETUP_PHASE;
+ dwc->link_state = DWC3_LINK_STATE_SS_DIS;
dwc3_ep0_out_start(dwc);
dwc3_gadget_enable_irq(dwc);
--
2.19.1
next prev parent reply other threads:[~2019-03-04 8:28 UTC|newest]
Thread overview: 83+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-04 8:21 [PATCH 4.19 00/78] 4.19.27-stable review Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 01/78] irq/matrix: Split out the CPU selection code into a helper Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 02/78] irq/matrix: Spread managed interrupts on allocation Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 03/78] genirq/matrix: Improve target CPU selection for managed interrupts Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 04/78] mac80211: Change default tx_sk_pacing_shift to 7 Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 05/78] scsi: libsas: Fix rphy phy_identifier for PHYs with end devices attached Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 06/78] drm/msm: Unblock writer if reader closes file Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 07/78] ASoC: Intel: Haswell/Broadwell: fix setting for .dynamic field Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 08/78] ALSA: compress: prevent potential divide by zero bugs Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 09/78] ASoC: Variable "val" in function rt274_i2c_probe() could be uninitialized Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 10/78] clk: tegra: dfll: Fix a potential Oop in remove() Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 11/78] clk: sysfs: fix invalid JSON in clk_dump Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 12/78] clk: vc5: Abort clock configuration without upstream clock Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 13/78] thermal: int340x_thermal: Fix a NULL vs IS_ERR() check Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.19 14/78] usb: dwc3: gadget: synchronize_irq dwc irq in suspend Greg Kroah-Hartman
2019-03-04 8:21 ` Greg Kroah-Hartman [this message]
2019-03-04 8:21 ` [PATCH 4.19 16/78] usb: gadget: Potential NULL dereference on allocation error Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 17/78] selftests: rtc: rtctest: fix alarm tests Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 18/78] selftests: rtc: rtctest: add alarm test on minute boundary Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 19/78] genirq: Make sure the initial affinity is not empty Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 20/78] x86/mm/mem_encrypt: Fix erroneous sizeof() Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 21/78] ASoC: rt5682: Fix PLL source register definitions Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 22/78] ASoC: dapm: change snprintf to scnprintf for possible overflow Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 23/78] ASoC: imx-audmux: " Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 24/78] selftests/vm/gup_benchmark.c: match gup struct to kernel Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 25/78] phy: ath79-usb: Fix the power on error path Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 26/78] phy: ath79-usb: Fix the main reset name to match the DT binding Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 27/78] selftests: seccomp: use LDLIBS instead of LDFLAGS Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 28/78] selftests: gpio-mockup-chardev: Check asprintf() for error Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 29/78] irqchip/gic-v3-mbi: Fix uninitialized mbi_lock Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 30/78] ARC: fix __ffs return value to avoid build warnings Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 31/78] ARC: show_regs: lockdep: avoid page allocator Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 32/78] drivers: thermal: int340x_thermal: Fix sysfs race condition Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 33/78] staging: rtl8723bs: Fix build error with Clang when inlining is disabled Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 34/78] mac80211: fix miscounting of ttl-dropped frames Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 35/78] sched/wait: Fix rcuwait_wake_up() ordering Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 36/78] sched/wake_q: Fix wakeup ordering for wake_q Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 37/78] futex: Fix (possible) missed wakeup Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 38/78] locking/rwsem: " Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 39/78] drm/amd/powerplay: OD setting fix on Vega10 Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 40/78] tty: serial: qcom_geni_serial: Allow mctrl when flow control is disabled Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 41/78] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 42/78] drm/sun4i: hdmi: Fix usage of TMDS clock Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 43/78] staging: android: ion: Support cpu access during dma_buf_detach Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 44/78] direct-io: allow direct writes to empty inodes Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 45/78] writeback: synchronize sync(2) against cgroup writeback membership switches Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 46/78] scsi: lpfc: nvme: avoid hang / use-after-free when destroying localport Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 47/78] scsi: lpfc: nvmet: avoid hang / use-after-free when destroying targetport Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 48/78] scsi: csiostor: fix NULL pointer dereference in csio_vport_set_state() Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 49/78] net: altera_tse: fix connect_local_phy error path Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 50/78] hv_netvsc: Fix ethtool change hash key error Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 51/78] hv_netvsc: Refactor assignments of struct netvsc_device_info Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 52/78] hv_netvsc: Fix hash key value reset after other ops Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 53/78] nvme-rdma: fix timeout handler Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 54/78] nvme-multipath: drop optimization for static ANA group IDs Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 55/78] drm/msm: Fix A6XX support for opp-level Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 56/78] net: usb: asix: ax88772_bind return error when hw_reset fail Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 57/78] net: dev_is_mac_header_xmit() true for ARPHRD_RAWIP Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 58/78] ibmveth: Do not process frames after calling napi_reschedule Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 59/78] mac80211: dont initiate TDLS connection if station is not associated to AP Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 60/78] mac80211: Add attribute aligned(2) to struct action Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 61/78] cfg80211: extend range deviation for DMG Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 62/78] svm: Fix AVIC incomplete IPI emulation Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 63/78] KVM: nSVM: clear events pending from svm_complete_interrupts() when exiting to L1 Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 64/78] kvm: selftests: Fix region overlap check in kvm_util Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 65/78] mmc: spi: Fix card detection during probe Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 66/78] mmc: tmio_mmc_core: dont claim spurious interrupts Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 67/78] mmc: tmio: fix access width of Block Count Register Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 68/78] mmc: core: Fix NULL ptr crash from mmc_should_fail_request Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 69/78] mmc: cqhci: fix space allocated for transfer descriptor Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 70/78] mmc: cqhci: Fix a tiny potential memory leak on error condition Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 71/78] mmc: sdhci-esdhc-imx: correct the fix of ERR004536 Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 72/78] mm: enforce min addr even if capable() in expand_downwards() Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 73/78] drm: Block fb changes for async plane updates Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 74/78] hugetlbfs: fix races and page leaks during migration Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 75/78] MIPS: fix truncation in __cmpxchg_small for short values Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.19 76/78] MIPS: BCM63XX: provide DMA masks for ethernet devices Greg Kroah-Hartman
2019-03-04 8:23 ` [PATCH 4.19 77/78] MIPS: eBPF: Fix icache flush end address Greg Kroah-Hartman
2019-03-04 8:23 ` [PATCH 4.19 78/78] x86/uaccess: Dont leak the AC flag into __put_user() value evaluation Greg Kroah-Hartman
2019-03-04 19:09 ` [PATCH 4.19 00/78] 4.19.27-stable review Naresh Kamboju
2019-03-05 3:39 ` Guenter Roeck
2019-03-05 14:07 ` Jon Hunter
2019-03-05 16:19 ` shuah
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