From: Arnd Bergmann <arnd@arndb.de> To: stable@vger.kernel.org, Felipe Balbi <balbi@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Roger Quadros <rogerq@ti.com>, Felipe Balbi <felipe.balbi@linux.intel.com>, Arnd Bergmann <arnd@arndb.de>, Thinh Nguyen <thinh.nguyen@synopsys.com>, Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [BACKPORT 4.4.y 09/25] usb: dwc3: gadget: Fix suspend/resume during device mode Date: Fri, 22 Mar 2019 16:44:00 +0100 [thread overview] Message-ID: <20190322154425.3852517-10-arnd@arndb.de> (raw) In-Reply-To: <20190322154425.3852517-1-arnd@arndb.de> From: Roger Quadros <rogerq@ti.com> Gadget controller might not be always active during system suspend/resume as gadget driver might not have yet been loaded or might have been unloaded prior to system suspend. Check if we're active and only then perform necessary actions during suspend/resume. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> (cherry picked from commit 9772b47a4c2916d645c551228b6085ea24acbe5d) Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/usb/dwc3/gadget.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index b6037a0ae829..58e67c228971 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2893,6 +2893,9 @@ void dwc3_gadget_exit(struct dwc3 *dwc) int dwc3_gadget_suspend(struct dwc3 *dwc) { + if (!dwc->gadget_driver) + return 0; + if (dwc->pullups_connected) { dwc3_gadget_disable_irq(dwc); dwc3_gadget_run_stop(dwc, true, true); @@ -2911,6 +2914,9 @@ int dwc3_gadget_resume(struct dwc3 *dwc) struct dwc3_ep *dep; int ret; + if (!dwc->gadget_driver) + return 0; + /* Start with SuperSpeed Default */ dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512); -- 2.20.0
WARNING: multiple messages have this Message-ID (diff)
From: Arnd Bergmann <arnd@arndb.de> To: stable@vger.kernel.org, Felipe Balbi <balbi@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Roger Quadros <rogerq@ti.com>, Felipe Balbi <felipe.balbi@linux.intel.com>, Arnd Bergmann <arnd@arndb.de>, Thinh Nguyen <thinh.nguyen@synopsys.com>, Anurag Kumar Vulisha <anurag.kumar.vulisha@xilinx.com>, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [BACKPORT,4.4.y,09/25] usb: dwc3: gadget: Fix suspend/resume during device mode Date: Fri, 22 Mar 2019 16:44:00 +0100 [thread overview] Message-ID: <20190322154425.3852517-10-arnd@arndb.de> (raw) From: Roger Quadros <rogerq@ti.com> Gadget controller might not be always active during system suspend/resume as gadget driver might not have yet been loaded or might have been unloaded prior to system suspend. Check if we're active and only then perform necessary actions during suspend/resume. Signed-off-by: Roger Quadros <rogerq@ti.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com> (cherry picked from commit 9772b47a4c2916d645c551228b6085ea24acbe5d) Signed-off-by: Arnd Bergmann <arnd@arndb.de> --- drivers/usb/dwc3/gadget.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index b6037a0ae829..58e67c228971 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2893,6 +2893,9 @@ void dwc3_gadget_exit(struct dwc3 *dwc) int dwc3_gadget_suspend(struct dwc3 *dwc) { + if (!dwc->gadget_driver) + return 0; + if (dwc->pullups_connected) { dwc3_gadget_disable_irq(dwc); dwc3_gadget_run_stop(dwc, true, true); @@ -2911,6 +2914,9 @@ int dwc3_gadget_resume(struct dwc3 *dwc) struct dwc3_ep *dep; int ret; + if (!dwc->gadget_driver) + return 0; + /* Start with SuperSpeed Default */ dwc3_gadget_ep0_desc.wMaxPacketSize = cpu_to_le16(512);
next prev parent reply other threads:[~2019-03-22 15:47 UTC|newest] Thread overview: 67+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-22 15:43 [BACKPORT 4.4.y 00/25] candidates from spreadtrum 4.4 product kernel Arnd Bergmann 2019-03-22 15:43 ` Arnd Bergmann 2019-03-22 15:43 ` Arnd Bergmann 2019-03-22 15:43 ` Arnd Bergmann 2019-03-22 15:43 ` [BACKPORT 4.4.y 01/25] mmc: pwrseq: constify mmc_pwrseq_ops structures Arnd Bergmann 2019-03-26 1:08 ` Greg KH 2019-03-26 6:44 ` Julia Lawall 2019-03-26 8:11 ` Arnd Bergmann 2019-03-22 15:43 ` [BACKPORT 4.4.y 02/25] ALSA: compress: add support for 32bit calls in a 64bit kernel Arnd Bergmann 2019-03-26 1:09 ` Greg KH 2019-03-26 7:55 ` Arnd Bergmann 2019-03-30 9:40 ` Greg KH 2019-03-22 15:43 ` [BACKPORT 4.4.y 03/25] mmc: pwrseq_simple: Make reset-gpios optional to match doc Arnd Bergmann 2019-03-22 15:43 ` [BACKPORT 4.4.y 04/25] USB: iowarrior: fix oops with malicious USB descriptors Arnd Bergmann 2019-03-22 15:43 ` [BACKPORT,4.4.y,04/25] " Arnd Bergmann 2019-03-26 1:13 ` [BACKPORT 4.4.y 04/25] " Greg Kroah-Hartman 2019-03-26 1:13 ` [BACKPORT,4.4.y,04/25] " Greg Kroah-Hartman 2019-03-26 8:20 ` [BACKPORT 4.4.y 04/25] " Arnd Bergmann 2019-03-26 8:20 ` [BACKPORT,4.4.y,04/25] " Arnd Bergmann 2019-03-26 9:35 ` [BACKPORT 4.4.y 04/25] " Baolin Wang 2019-03-26 9:35 ` [BACKPORT,4.4.y,04/25] " Baolin Wang 2019-03-26 9:47 ` [BACKPORT 4.4.y 04/25] " 翟京 (Orson Zhai) 2019-03-26 9:47 ` [BACKPORT,4.4.y,04/25] " 翟京 (Orson Zhai) 2019-03-22 15:43 ` [BACKPORT 4.4.y 05/25] mmc: debugfs: Add a restriction to mmc debugfs clock setting Arnd Bergmann 2019-03-22 15:43 ` [BACKPORT 4.4.y 06/25] mmc: make MAN_BKOPS_EN message a debug Arnd Bergmann 2019-03-22 15:43 ` [BACKPORT 4.4.y 07/25] mmc: sanitize 'bus width' in debug output Arnd Bergmann 2019-03-22 15:43 ` [BACKPORT 4.4.y 08/25] mmc: core: shut up "voltage-ranges unspecified" pr_info() Arnd Bergmann 2019-03-22 15:44 ` Arnd Bergmann [this message] 2019-03-22 15:44 ` [BACKPORT,4.4.y,09/25] usb: dwc3: gadget: Fix suspend/resume during device mode Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 10/25] arm64: mm: Add trace_irqflags annotations to do_debug_exception() Arnd Bergmann 2019-03-22 15:44 ` Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 11/25] mmc: core: fix using wrong io voltage if mmc_select_hs200 fails Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 12/25] mm/rmap: replace BUG_ON(anon_vma->degree) with VM_WARN_ON Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 13/25] extcon: usb-gpio: Don't miss event during suspend/resume Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 14/25] kbuild: setlocalversion: print error to STDERR Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 15/25] usb: gadget: composite: fix dereference after null check coverify warning Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT,4.4.y,15/25] " Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 16/25] usb: gadget: Add the gserial port checking in gs_start_tx() Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT,4.4.y,16/25] " Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 17/25] mmc: core: don't try to switch block size for dual rate mode Arnd Bergmann 2019-03-26 1:27 ` Greg KH 2019-03-26 8:14 ` Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 18/25] tcp/dccp: drop SYN packets if accept queue is full Arnd Bergmann 2019-03-22 15:44 ` Arnd Bergmann 2019-03-26 1:21 ` Greg KH 2019-03-26 1:21 ` Greg KH 2019-03-22 15:44 ` [BACKPORT 4.4.y 19/25] serial: sprd: adjust TIMEOUT to a big value Arnd Bergmann 2019-03-26 1:21 ` Greg KH 2019-03-22 15:44 ` [BACKPORT 4.4.y 20/25] Hang/soft lockup in d_invalidate with simultaneous calls Arnd Bergmann 2019-03-26 1:30 ` Greg KH 2019-03-22 15:44 ` [BACKPORT 4.4.y 21/25] arm64: traps: disable irq in die() Arnd Bergmann 2019-03-22 15:44 ` Arnd Bergmann 2019-03-26 1:31 ` Greg KH 2019-03-26 1:31 ` Greg KH 2019-03-22 15:44 ` [BACKPORT 4.4.y 22/25] usb: renesas_usbhs: gadget: fix unused-but-set-variable warning Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT,4.4.y,22/25] " Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT 4.4.y 23/25] serial: sprd: clear timeout interrupt only rather than all interrupts Arnd Bergmann 2019-03-26 1:34 ` Greg KH 2019-03-22 15:44 ` [BACKPORT 4.4.y 24/25] lib/int_sqrt: optimize small argument Arnd Bergmann 2019-03-26 1:36 ` Greg KH 2019-03-22 15:44 ` [BACKPORT 4.4.y 25/25] USB: core: only clean up what we allocated Arnd Bergmann 2019-03-22 15:44 ` [BACKPORT,4.4.y,25/25] " Arnd Bergmann 2019-03-26 1:36 ` [BACKPORT 4.4.y 25/25] " Greg Kroah-Hartman 2019-03-26 1:36 ` [BACKPORT,4.4.y,25/25] " Greg Kroah-Hartman 2019-03-26 2:18 ` [BACKPORT 4.4.y 00/25] candidates from spreadtrum 4.4 product kernel Greg KH 2019-03-26 2:18 ` Greg KH 2019-03-26 2:18 ` Greg KH
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