* Huawei integrated modem causes instant resume from suspend on Acer P648-G3
@ 2017-09-27 6:14 Daniel Drake
2017-09-27 7:12 ` Oliver Neukum
0 siblings, 1 reply; 4+ messages in thread
From: Daniel Drake @ 2017-09-27 6:14 UTC (permalink / raw)
To: linux-usb, linux-pm; +Cc: linux
Hi,
The Acer TravelMate P648-G3 laptop includes this integrated Huawei 4G modem
on the USB bus:
T: Bus=01 Lev=01 Prnt=01 Port=08 Cnt=04 Dev#= 5 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=ff MxPS=64 #Cfgs= 3
P: Vendor=12d1 ProdID=15c3 Rev= 1.02
S: Manufacturer=Huawei Technologies Co., Ltd.
S: Product=HUAWEI Mobile
S: SerialNumber=0123456789ABCDEF
C: #Ifs= 5 Cfg#= 1 Atr=a0 MxPwr= 2mA
Under Linux, this system has an issue where it will automatically resume
3-4 seconds after going into suspend. After some experimentation we realised
that it is related to this 4G modem.
The problem can be worked around with:
echo 1-9 > /sys/bus/usb/drivers/usb/unbind
or the attached hacky patch which does something similar. Now the system
goes into suspend and stays asleep.
The problem happens even though we are not using the modem at all (checked
from rescue.target/runlevel1). Under Windows the system can suspend fine.
Seeking a better fix, we've tried a lot of things, including:
- Unbind usb serial interface(ttyUSB0-3) and cdc-eth interface (instead of
the whole port)
- Check that the device's power/wakeup is disabled
- All the quirks in drivers/usb/core/quirks.c e.g. USB_QUIRK_RESET_RESUME,
USB_QUIRK_RESET, USB_QUIRK_IGNORE_REMOTE_WAKEUP, USB_QUIRK_NO_LPM.
- Check usb_port_suspend() to see if the do_remote_wakeup path is followed
(it's not)
but none of that makes any difference.
There are no errors in the logs showing any suspend/resume-related issues.
When the system wakes up due to the modem, log-wise it appears to be a
normal resume.
Does anyone have any suggestions for how we can investigate further, or how
we should workaround this issue in upstreamable form?
Thanks
Daniel
---
drivers/usb/core/hub.c | 4 ++++
drivers/usb/core/quirks.c | 4 ++++
include/linux/usb/quirks.h | 5 +++++
3 files changed, 13 insertions(+)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 822f8c50e423..ac9ceacdc76c 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -3160,6 +3160,10 @@ int usb_port_suspend(struct usb_device *udev, pm_message_t msg)
goto err_ltm;
}
+ if (udev->quirks & USB_QUIRK_DISCONNECT_SUSPEND) {
+ usb_clear_port_feature(hub->hdev, port1, USB_PORT_FEAT_ENABLE);
+ }
+
/* see 7.1.7.6 */
if (hub_is_superspeed(hub->hdev))
status = hub_set_port_link_state(hub, port1, USB_SS_PORT_LS_U3);
diff --git a/drivers/usb/core/quirks.c b/drivers/usb/core/quirks.c
index 82806e311202..9325be88bb02 100644
--- a/drivers/usb/core/quirks.c
+++ b/drivers/usb/core/quirks.c
@@ -203,6 +203,10 @@ static const struct usb_device_id usb_quirk_list[] = {
{ USB_DEVICE(0x10d6, 0x2200), .driver_info =
USB_QUIRK_STRING_FETCH_255 },
+ /* Huawei 4G LTE module */
+ { USB_DEVICE(0x12d1, 0x15c3), .driver_info = USB_QUIRK_DISCONNECT_SUSPEND},
+ { USB_DEVICE(0x12d1, 0x15bb), .driver_info = USB_QUIRK_DISCONNECT_SUSPEND},
+
/* SKYMEDI USB_DRIVE */
{ USB_DEVICE(0x1516, 0x8628), .driver_info = USB_QUIRK_RESET_RESUME },
diff --git a/include/linux/usb/quirks.h b/include/linux/usb/quirks.h
index de2a722fe3cf..45ad360dfa21 100644
--- a/include/linux/usb/quirks.h
+++ b/include/linux/usb/quirks.h
@@ -56,4 +56,9 @@
*/
#define USB_QUIRK_LINEAR_FRAME_INTR_BINTERVAL BIT(11)
+/* device need to be disconnect before suspend to prevent from unexpected
+ * wakeup.
+ */
+#define USB_QUIRK_DISCONNECT_SUSPEND BIT(12)
+
#endif /* __LINUX_USB_QUIRKS_H */
--
2.11.0
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: Huawei integrated modem causes instant resume from suspend on Acer P648-G3
2017-09-27 6:14 Huawei integrated modem causes instant resume from suspend on Acer P648-G3 Daniel Drake
@ 2017-09-27 7:12 ` Oliver Neukum
[not found] ` <1506496379.28482.1.camel-IBi9RG/b67k@public.gmane.org>
0 siblings, 1 reply; 4+ messages in thread
From: Oliver Neukum @ 2017-09-27 7:12 UTC (permalink / raw)
To: Daniel Drake, linux-usb, linux-pm; +Cc: linux
Am Mittwoch, den 27.09.2017, 14:14 +0800 schrieb Daniel Drake:
> There are no errors in the logs showing any suspend/resume-related issues.
> When the system wakes up due to the modem, log-wise it appears to be a
> normal resume.
>
> Does anyone have any suggestions for how we can investigate further, or how
> we should workaround this issue in upstreamable form?
Hi,
unfortunately you left out the most important information
1) kernel version?
2) driver used?
3) device descriptors (lsusb)
4) s2idle or S3?
Regards
Oliver
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Huawei integrated modem causes instant resume from suspend on Acer P648-G3
[not found] ` <1506496379.28482.1.camel-IBi9RG/b67k@public.gmane.org>
@ 2017-10-02 2:23 ` Daniel Drake
2017-10-04 13:31 ` Oliver Neukum
0 siblings, 1 reply; 4+ messages in thread
From: Daniel Drake @ 2017-10-02 2:23 UTC (permalink / raw)
To: Oliver Neukum
Cc: Linux USB Mailing List, linux-pm-u79uwXL29TY76Z2rM5mHXA,
Linux Upstreaming Team
On Wed, Sep 27, 2017 at 3:12 PM, Oliver Neukum <oneukum-IBi9RG/b67k@public.gmane.org> wrote:
> 1) kernel version?
Currently testing 4.14.0-rc2 but reproduced on multiple older versions
too going back to 4.8. (Have not found a working kernel version)
> 2) driver used?
The problem is reproducible just with the base usb driver, without any
USB modem drivers loaded. (It would ordinarily load option and
cdc-ether)
> 3) device descriptors (lsusb)
Bus 001 Device 005: ID 12d1:15c3 Huawei Technologies Co., Ltd.
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 255
bMaxPacketSize0 64
idVendor 0x12d1 Huawei Technologies Co., Ltd.
idProduct 0x15c3
bcdDevice 1.02
iManufacturer 1 Huawei Technologies Co., Ltd.
iProduct 2 HUAWEI Mobile
iSerial 3 0123456789ABCDEF
bNumConfigurations 3
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 259
bNumInterfaces 5
bConfigurationValue 1
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 16
iInterface 0
** UNRECOGNIZED: 05 24 00 10 01
** UNRECOGNIZED: 04 24 02 02
** UNRECOGNIZED: 05 24 01 00 00
** UNRECOGNIZED: 05 24 06 00 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x000a 1x 10 bytes
bInterval 9
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 19
iInterface 0
** UNRECOGNIZED: 05 24 00 10 01
** UNRECOGNIZED: 04 24 02 02
** UNRECOGNIZED: 05 24 01 00 01
** UNRECOGNIZED: 05 24 06 00 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 18
iInterface 0
** UNRECOGNIZED: 05 24 00 10 01
** UNRECOGNIZED: 04 24 02 02
** UNRECOGNIZED: 05 24 01 00 02
** UNRECOGNIZED: 05 24 06 00 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 22
iInterface 7 NCM Network Control Model
** UNRECOGNIZED: 05 24 00 10 01
** UNRECOGNIZED: 06 24 1a 00 01 1f
** UNRECOGNIZED: 0d 24 0f 09 0f 00 00 00 ea 05 03 00 01
** UNRECOGNIZED: 05 24 06 03 03
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 5
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 1
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 22
iInterface 8 CDC Network Data
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 5
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 27
iInterface 0
** UNRECOGNIZED: 05 24 00 10 01
** UNRECOGNIZED: 04 24 02 02
** UNRECOGNIZED: 05 24 01 00 04
** UNRECOGNIZED: 05 24 06 00 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x87 EP 7 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x05 EP 5 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 246
bNumInterfaces 6
bConfigurationValue 2
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 2mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 6 Ethernet Networking
bInterfaceProtocol 0
iInterface 11 CDC Ethernet Control Model (ECM)
CDC Header:
bcdCDC 1.10
CDC Union:
bMasterInterface 0
bSlaveInterface 1
CDC Ethernet:
iMacAddress 13 021E101F0000
bmEthernetStatistics 0x00000000
wMaxSegmentSize 1514
wNumberMCFilters 0x0000
bNumberPowerFilters 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 5
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 6
bInterfaceProtocol 0
iInterface 12 CDC Ethernet Data
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 3
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 16
iInterface 0
** UNRECOGNIZED: 05 24 00 10 01
** UNRECOGNIZED: 04 24 02 02
** UNRECOGNIZED: 05 24 01 00 02
** UNRECOGNIZED: 05 24 06 00 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x84 EP 4 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x000a 1x 10 bytes
bInterval 9
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x83 EP 3 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x02 EP 2 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 19
iInterface 0
** UNRECOGNIZED: 05 24 00 10 01
** UNRECOGNIZED: 04 24 02 02
** UNRECOGNIZED: 05 24 01 00 03
** UNRECOGNIZED: 05 24 06 00 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 4
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 18
iInterface 0
** UNRECOGNIZED: 05 24 00 10 01
** UNRECOGNIZED: 04 24 02 02
** UNRECOGNIZED: 05 24 01 00 04
** UNRECOGNIZED: 05 24 06 00 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x86 EP 6 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x04 EP 4 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 5
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 6
bInterfaceProtocol 27
iInterface 0
** UNRECOGNIZED: 05 24 00 10 01
** UNRECOGNIZED: 04 24 02 02
** UNRECOGNIZED: 05 24 01 00 05
** UNRECOGNIZED: 05 24 06 00 00
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x87 EP 7 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x05 EP 5 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 95
bNumInterfaces 2
bConfigurationValue 3
iConfiguration 0
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 2mA
Interface Association:
bLength 8
bDescriptorType 11
bFirstInterface 0
bInterfaceCount 2
bFunctionClass 2 Communications
bFunctionSubClass 14
bFunctionProtocol 0
iFunction 10 HUAWEI Mobile Broadband Module
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 2 Communications
bInterfaceSubClass 14
bInterfaceProtocol 0
iInterface 7 NCM Network Control Model
CDC Header:
bcdCDC 1.10
CDC MBIM:
bcdMBIMVersion 1.00
wMaxControlMessage 1024
bNumberFilters 32
bMaxFilterSize 128
wMaxSegmentSize 1500
bmNetworkCapabilities 0x20
8-byte ntb input size
UNRECOGNIZED CDC: 08 24 1c 00 01 10 dc 05
CDC Union:
bMasterInterface 0
bSlaveInterface 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0010 1x 16 bytes
bInterval 5
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 2
iInterface 8 CDC Network Data
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 2
bInterfaceClass 10 CDC Data
bInterfaceSubClass 0 Unused
bInterfaceProtocol 2
iInterface 8 CDC Network Data
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Device Qualifier (for other device speed):
bLength 10
bDescriptorType 6
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 255
bMaxPacketSize0 64
bNumConfigurations 3
Device Status: 0x0001
Self Powered
> 4) s2idle or S3?
S3 suspend with: echo mem > /sys/power/state
Thanks
Daniel
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^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Huawei integrated modem causes instant resume from suspend on Acer P648-G3
2017-10-02 2:23 ` Daniel Drake
@ 2017-10-04 13:31 ` Oliver Neukum
0 siblings, 0 replies; 4+ messages in thread
From: Oliver Neukum @ 2017-10-04 13:31 UTC (permalink / raw)
To: Daniel Drake; +Cc: Linux USB Mailing List, linux-pm, Linux Upstreaming Team
Am Montag, den 02.10.2017, 10:23 +0800 schrieb Daniel Drake:
> On Wed, Sep 27, 2017 at 3:12 PM, Oliver Neukum <oneukum@suse.com> wrote:
> >
> > 1) kernel version?
>
> Currently testing 4.14.0-rc2 but reproduced on multiple older versions
> too going back to 4.8. (Have not found a working kernel version)
>
> >
> > 2) driver used?
>
> The problem is reproducible just with the base usb driver, without any
> USB modem drivers loaded. (It would ordinarily load option and
> cdc-ether)
Hi,
this sucks in a major way. I am dismayed at the quality of some hardware.
It looks like your patch, which is a brutal sledge hammer, is indeed
needed and the correct approach.
It suggest you resubmit it with an updated change log containing
the what you wrote in your last mail.
Regards
Oliver
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2017-10-04 13:32 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-09-27 6:14 Huawei integrated modem causes instant resume from suspend on Acer P648-G3 Daniel Drake
2017-09-27 7:12 ` Oliver Neukum
[not found] ` <1506496379.28482.1.camel-IBi9RG/b67k@public.gmane.org>
2017-10-02 2:23 ` Daniel Drake
2017-10-04 13:31 ` Oliver Neukum
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