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 4.14 14/52] usb: dwc3: gadget: Fix the uninitialized link_state when udc starts
Date: Mon, 4 Mar 2019 09:22:12 +0100 [thread overview]
Message-ID: <20190304081617.925222967@linuxfoundation.org> (raw)
In-Reply-To: <20190304081617.159014799@linuxfoundation.org>
4.14-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 5da078bf5f76a..32dd0d3462da1 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1910,6 +1910,7 @@ 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 8:27 UTC|newest]
Thread overview: 57+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-03-04 8:21 [PATCH 4.14 00/52] 4.14.105-stable review Greg Kroah-Hartman
2019-03-04 8:21 ` [PATCH 4.14 01/52] Revert "loop: Fix double mutex_unlock(&loop_ctl_mutex) in loop_control_ioctl()" Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 02/52] Revert "loop: Get rid of loop_index_mutex" Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 03/52] Revert "loop: Fold __loop_release into loop_release" Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 04/52] net: stmmac: Fix reception of Broadcom switches tags Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 05/52] net: stmmac: Disable ACS Feature for GMAC >= 4 Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 06/52] scsi: libsas: Fix rphy phy_identifier for PHYs with end devices attached Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 07/52] drm/msm: Unblock writer if reader closes file Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 08/52] ASoC: Intel: Haswell/Broadwell: fix setting for .dynamic field Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 09/52] ALSA: compress: prevent potential divide by zero bugs Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 10/52] ASoC: Variable "val" in function rt274_i2c_probe() could be uninitialized Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 11/52] clk: vc5: Abort clock configuration without upstream clock Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 12/52] thermal: int340x_thermal: Fix a NULL vs IS_ERR() check Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 13/52] usb: dwc3: gadget: synchronize_irq dwc irq in suspend Greg Kroah-Hartman
2019-03-04 8:22 ` Greg Kroah-Hartman [this message]
2019-03-04 8:22 ` [PATCH 4.14 15/52] usb: gadget: Potential NULL dereference on allocation error Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 16/52] genirq: Make sure the initial affinity is not empty Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 17/52] ASoC: dapm: change snprintf to scnprintf for possible overflow Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 18/52] ASoC: imx-audmux: " Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 19/52] selftests: seccomp: use LDLIBS instead of LDFLAGS Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 20/52] selftests: gpio-mockup-chardev: Check asprintf() for error Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 21/52] ARC: fix __ffs return value to avoid build warnings Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 22/52] drivers: thermal: int340x_thermal: Fix sysfs race condition Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 23/52] staging: rtl8723bs: Fix build error with Clang when inlining is disabled Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 24/52] mac80211: fix miscounting of ttl-dropped frames Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 25/52] sched/wait: Fix rcuwait_wake_up() ordering Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 26/52] futex: Fix (possible) missed wakeup Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 27/52] locking/rwsem: " Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 28/52] drm/amd/powerplay: OD setting fix on Vega10 Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 29/52] serial: fsl_lpuart: fix maximum acceptable baud rate with over-sampling Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 30/52] staging: android: ion: Support cpu access during dma_buf_detach Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 31/52] direct-io: allow direct writes to empty inodes Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 32/52] writeback: synchronize sync(2) against cgroup writeback membership switches Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 33/52] scsi: csiostor: fix NULL pointer dereference in csio_vport_set_state() Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 34/52] net: altera_tse: fix connect_local_phy error path Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 35/52] hv_netvsc: Fix ethtool change hash key error Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 36/52] net: usb: asix: ax88772_bind return error when hw_reset fail Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 37/52] net: dev_is_mac_header_xmit() true for ARPHRD_RAWIP Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 38/52] ibmveth: Do not process frames after calling napi_reschedule Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 39/52] mac80211: dont initiate TDLS connection if station is not associated to AP Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 40/52] mac80211: Add attribute aligned(2) to struct action Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 41/52] cfg80211: extend range deviation for DMG Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 42/52] svm: Fix AVIC incomplete IPI emulation Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 43/52] KVM: nSVM: clear events pending from svm_complete_interrupts() when exiting to L1 Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 44/52] powerpc: Always initialize input array when calling epapr_hypercall() Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 45/52] mmc: spi: Fix card detection during probe Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 46/52] mmc: tmio_mmc_core: dont claim spurious interrupts Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 47/52] mmc: tmio: fix access width of Block Count Register Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 48/52] mmc: sdhci-esdhc-imx: correct the fix of ERR004536 Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 49/52] mm: enforce min addr even if capable() in expand_downwards() Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 50/52] MIPS: fix truncation in __cmpxchg_small for short values Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 51/52] MIPS: eBPF: Fix icache flush end address Greg Kroah-Hartman
2019-03-04 8:22 ` [PATCH 4.14 52/52] x86/uaccess: Dont leak the AC flag into __put_user() value evaluation Greg Kroah-Hartman
2019-03-04 18:42 ` [PATCH 4.14 00/52] 4.14.105-stable review Naresh Kamboju
2019-03-05 3:38 ` Guenter Roeck
2019-03-05 14:06 ` Jon Hunter
2019-03-05 16:11 ` shuah
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