struct mon_bin_hdr allows for a 64-bit seconds timestamp. The code
currently uses 'struct timeval' to populate the timestamp in mon_bin_hdr,
which has a 32-bit seconds field and will overflow in year 2038 and beyond.
This patch replaces 'struct timeval' with 'struct timespec64' which is
y2038 safe. This patch is part of a larger attempt to remove instances
of struct timeval and other 32-bit timekeeping (time_t, struct timespec)
from the kernel.
Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
timeval is deprecated and not y2038 safe. Its size also changes according
to 32 bit/ 64 bit compilation. Replace it with 32 and 64 bit versions of
its individual fields, giving two ioctls with different code values.
The two ioctls are necessary to maintain the 32 bit and 64 bit userspace
compatibility with a 64/32 bit kernel.
Change unsigned to __u32 types for a definitive userspace interface.
This is in accordance with the psABI that the unsigned type is always
32 bits.
Also use motonic timer instead of real time to ensure positive delta
values.
Refactor usbtest_ioctl for readability to isolate the handling of the
testing timing measurement.
The official testusb userspace tool can be changed in a separate patch
to reflect the __u32 changes as well. It can use the usbtest_param_32
struct, since 32 bit seconds is long enough for test durations.
Signed-off-by: Deepa Dinamani <deepa.kernel@gmail.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
struct timeval' uses 32-bits for its seconds field and will overflow in
the year 2038 and beyond. This patch replaces the usage of 'struct timeval'
in mon_get_timestamp() with timespec64 which uses a 64-bit seconds field
and is y2038-safe. mon_get_timestamp() truncates the timestamp at 4096 seconds,
so the correctness of the code is not affected. This patch is part of a larger
attempt to remove instances of struct timeval and other 32-bit timekeeping
(time_t, struct timespec) from the kernel.
Signed-off-by: Tina Ruchandani <ruchandani.tina@gmail.com>
Suggested-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
So far we were using simple (legacy) GPIO functions & some poor logic to
control power. It got many drawbacks: we were ignoring OF flags
(GPIO_ACTIVE_LOW), we were not setting direction to output and we were
assuming gpio_request success all the time.
Fix it by switching to gpiod functions and adding appropriate checks.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
usb_parse_ss_endpoint_companion() now decodes the burst multiplier
correctly in order to check that it's <= 3, but still uses the wrong
expression if warning that it's > 3.
Fixes: ff30cbc8da ("usb: Use the USB_SS_MULT() macro to get the ...")
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
qset_fill_page_list() do not check for dma mapping errors.
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When a USB 3.0 mass storage device is disconnected in transporting
state, storage device driver may handle it as a transport error and
reset the device by invoking usb_reset_and_verify_device()
and following could happen:
in usb_reset_and_verify_device():
udev->bos = NULL;
For U1/U2 enabled devices, driver will disable LPM, and in some
conditions:
from usb_unlocked_disable_lpm()
--> usb_disable_lpm()
--> usb_enable_lpm()
udev->bos->ss_cap->bU1devExitLat;
And it causes 'NULL pointer' and 'kernel panic':
[ 157.976257] Unable to handle kernel NULL pointer dereference
at virtual address 00000010
...
[ 158.026400] PC is at usb_enable_link_state+0x34/0x2e0
[ 158.031442] LR is at usb_enable_lpm+0x98/0xac
...
[ 158.137368] [<ffffffc0006a1cac>] usb_enable_link_state+0x34/0x2e0
[ 158.143451] [<ffffffc0006a1fec>] usb_enable_lpm+0x94/0xac
[ 158.148840] [<ffffffc0006a20e8>] usb_disable_lpm+0xa8/0xb4
...
[ 158.214954] Kernel panic - not syncing: Fatal exception
This commit moves 'udev->bos = NULL' behind usb_unlocked_disable_lpm()
to prevent from NULL pointer access.
Issue can be reproduced by following setup:
1) A SS pen drive behind a SS hub connected to the host.
2) Transporting data between the pen drive and the host.
3) Abruptly disconnect hub and pen drive from host.
4) With a chance it crashes.
Signed-off-by: Hans Yang <hansy@nvidia.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The usb_mon_operations structure is never modified, so declare it as const.
Done with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Now the function of complicated_callback is not only used for iso
transfer, improve the error message to reflect it.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
for checking if a property is present or not,
of_property_read_bool is more appropriate than of_get_property()
Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This function must be called with a spinlock held.
Memory can be allocated only with GFP_ATOMIC. Passing
a gfp_t argument is a waste.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Use this macro to make the driver more readable.
Signed-off-by: Oliver Neukum <oneukum@suse.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The dma_pool_destroy() function tests whether its argument is NULL
and then returns immediately. Thus the test around the calls is not needed.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
replace dma_pool_alloc and memset with a single call to dma_pool_zalloc
Signed-off-by: Saurabh Sengar <saurabh.truth@gmail.com>
Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Replace the existing two extended capability parsing helper functions with
one called xhci_find_next_ext_cap().
The extended capabilities are read both in pci-quirks before xhci driver is
loaded, and inside the xhci driver when adding ports. The existing helpers
did not suit well for these cases and a lot of custom parsing code was
needed.
The new helper function simplifies these two cases a lot.
The motivation for this rework was that code to support xhci debug
capability needed to parse extended capabilities, and it included
yet another capability parsing helper specific for its needs. With
this solution it debug capability code can use this new helper as well
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Don't use dev_warn() for intened behaviour, use dev_dbg()
Rounding down the interval to the nearest power of 2 is required
by xhci specs.
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
There some vendor quirks for MTK xhci host controller:
1. It defines some extra SW scheduling parameters for HW
to minimize the scheduling effort for synchronous and
interrupt endpoints. The parameters are put into reseved
DWs of slot context and endpoint context.
2. Its IMODI unit for Interrupter Moderation register is
8 times as much as that defined in xHCI spec.
3. Its TDS in Normal TRB defines a number of packets that
remains to be transferred for a TD after processing all
Max packets in all previous TRBs.
Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com>
Tested-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The R-Car H3 has two xHCI controllers. This SoC is compatible with
R-Car Gen2 SoCs, however this SoC doesn't need some specific registers
setting, and need a new firmware.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds support for R-Car M2-N (r8a7793) xHCI controller.
This SoC is compatible with R-Car H2 (r8a7790) and R-Car M2-W (r8a7791).
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch changes code to ease the addition of next generation SoCs.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds a member "firmware_name" in struct xhci_plat_priv
to simplify the code to match specific firmware name.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds struct xhci_plat_priv to simplify the code to match
platform specific variables. For now, this patch adds a member "type"
in the structure.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds an xhci->priv field for private use by
XHCI platform drivers. Until now none of the platform drivers
has used this private space.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch cleanups the hcd private size to suitable size.
The previous code has "sizeof(struct xhci_hcd *)" in xhci_hc_driver
as hcd_priv_size and sizeof(struct xhci_hcd) in xhci_plat_overrides
or xhci_pci_overrides as extra_priv_size. However, the xhci driver
uses a "sizeof(struct xhcd_hcd)" memory space in each hcd
(main_hcd and shared_hcd) actually.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
use the variables defined for populating the port status and
port chage bits retuend by GetPortStatus request intead of
the hub class feature selectors.
The defines for hub class feature selectors are used for other purposes,
they work as port status and feature selectors are in the same order, and
set the same bits, but it makes the code very hard to follow
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch adds a new warning message to ehci-hcd. The warning is
triggered whenever the driver finds that the hardware has set the
Active bit in a QH at a time when the driver expects the QH to be
completely idle. Such bugs have been observed by users in the past,
and since they can lead to serious problems (such as inability to
unlink an URB that never completes), it would be good to know about
them when they occur.
This won't fix these bugs; that's a bigger job for a later patch. But
success isn't guaranteed, since this depends on aspects of the
hardware which are not documented in the EHCI spec or for which the
spec's recommendations are clearly unworkable. It therefore seems
worthwhile to check for these bugs proactively.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Michael Reutman <mreutman@epiqsolutions.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch enhances the "async" debugfs file in ehci-hcd by printing
out several additional fields in the hardware-accessible data
structures. These fields are important for determining the hardware's
view of the async schedule, in particular, the addresses of the
current and next qTDs for each QH along with the start address of each
qTD's data buffer.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This patch improves the usbfs_snoop debugging facility by adding
messages for a couple of significant events which, up to now, have not
been logged. The events are reaping and discarding (i.e.,
cancelling) an URB. The debugging messages include the userspace
address of the URB being reaped or discarded.
The reaping messages have to be added in four places, in order to
handle blocking and non-blocking reaps in both normal and 32-bit
compatibility mode.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The usbfs_snoop facility can be very useful for debugging problems
involving usbfs. However, it always prints out the entire contents of
every URB. When dealing with large quantities of data, this can be
less than helpful.
This patch ameliorates the situation by adding a module parameter to
usbcore for controlling the maximum number of bytes to print when
snooping an URB. This makes debugging much easier. For backward
compatibility, the default value is set unreasonably high.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The patch extends the family of SATA-to-USB JMicron adapters that need
FUA to be disabled and applies the same policy for uas driver.
See details in http://unix.stackexchange.com/questions/237204/
Signed-off-by: Dmitry Katsubo <dmitry.katsubo@gmail.com>
Tested-by: Dmitry Katsubo <dmitry.katsubo@gmail.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Like other buggy models that had their fixes [1], the touchscreen with
id 04f3:21b8 from ELAN Microelectronics needs the device-qualifier
quirk. Otherwise, it fails to respond, blocks the boot for a random
amount of time and pollutes dmesg with:
[ 2887.373196] usb 1-5: new full-speed USB device number 41 using xhci_hcd
[ 2889.502000] usb 1-5: unable to read config index 0 descriptor/start: -71
[ 2889.502005] usb 1-5: can't read configurations, error -71
[ 2889.654571] usb 1-5: new full-speed USB device number 42 using xhci_hcd
[ 2891.783438] usb 1-5: unable to read config index 0 descriptor/start: -71
[ 2891.783443] usb 1-5: can't read configurations, error -71
[1]: See commits c68929f, 876af5d, d749947, a32c99e and dc703ec.
Tested-by: Adrien Vergé <adrienverge@gmail.com>
Signed-off-by: Adrien Vergé <adrienverge@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are some device-id fixes that remove a HID device from cp210x, and
adds support for another Infineon flash-loader device. The flash-loader
device presents itself as a CDC-ACM device even though it is clearly
not, so we need to blacklist it in the cdc-acm driver as well.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.4-rc3
Here are some device-id fixes that remove a HID device from cp210x, and
adds support for another Infineon flash-loader device. The flash-loader
device presents itself as a CDC-ACM device even though it is clearly
not, so we need to blacklist it in the cdc-acm driver as well.
Signed-off-by: Johan Hovold <johan@kernel.org>
Here's our second round of fixes. Some of the bugs are pretty old like
the one on pxa27x suspend implementation.
The most important part is a randbuild warning fix on MUSB CPPI DMA
engine by Arnd, a couple fixes by Felipe Tonello on f_midi (first one
makes sure we only transmit on enabled ep IN while second plugs a memory
leak) and a NULL pointer dereference fix on renesas usbhs.
Note that we also have a new compatible string being added for the MXS
PHY.
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Merge tag 'fixes-for-v4.4-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb into usb-linus
Felipe writes:
usb: fixes for v4.4-rc3
Here's our second round of fixes. Some of the bugs are pretty old like
the one on pxa27x suspend implementation.
The most important part is a randbuild warning fix on MUSB CPPI DMA
engine by Arnd, a couple fixes by Felipe Tonello on f_midi (first one
makes sure we only transmit on enabled ep IN while second plugs a memory
leak) and a NULL pointer dereference fix on renesas usbhs.
Note that we also have a new compatible string being added for the MXS
PHY.
Because interrupt endpoints usually transmit such
small amounts of data, it seems pointless to prestart
transfers and try to get speed improvements. This
patch also sorts out a problem with CDC ECM function
where its notification endpoint gets stuck in busy
state and we continuously issue Update Transfer
commands.
Fixes: 8a1a9c9e45 ("usb: dwc3: gadget: start transfer on XFER_COMPLETE")
Signed-off-by: Felipe Balbi <balbi@ti.com>
Added tx_empty callback needed for generic wait-until-sent support.
Without this function, when the port is closed usbserial can't know that
there are still data in the chip's transmit FIFO. The chip gets disabled
and untransmitted data lost. When the actual byte count is reported by
tx-empty the close can be delayed until all data are sent.
Signed-off-by: Konstantin Shkolnyy <konstantin.shkolnyy@gmail.com>
[johan: modify tx_empty error handling ]
Signed-off-by: Johan Hovold <johan@kernel.org>
This allows to write
drm-$(CONFIG_AGP) += drm_agpsupport.o
without having to handle CONFIG_AGP=y vs. CONFIG_AGP=m. Only support
this syntax for modules, since built-in code depending on something
modular cannot work and init/Makefile actually relies on the current
semantics. There are a few drivers which adapted to the current
semantics out of necessity; these are fixed to also work when the
respective subsystem is modular.
Acked-by: Peter Chen <peter.chen@freescale.com> [chipidea]
Signed-off-by: Michal Marek <mmarek@suse.com>
For historic reasons, the tegra platform selects USB_ULPI from architecture
code, but that hasn't really made sense for a long time, as the only
user of that code is the Tegra EHCI driver that has its own Kconfig
symbol.
This removes the 'select' statements from mach-tegra and drivers/soc/tegra
and adds them with the device driver that actually needs them.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The flash loader has been seen on a Telit UE910 modem. The flash loader
is a bit special, it presents both an ACM and CDC Data interface but
only the latter is useful. Unless a magic string is sent to the device
it will disappear and the regular modem device appears instead.
Signed-off-by: Jonas Jonsson <jonas@ludd.ltu.se>
Tested-by: Daniele Palmas <dnlplm@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Some modems, such as the Telit UE910, are using an Infineon Flash Loader
utility. It has two interfaces, 2/2/0 (Abstract Modem) and 10/0/0 (CDC
Data). The latter can be used as a serial interface to upgrade the
firmware of the modem. However, that isn't possible when the cdc-acm
driver takes control of the device.
The following is an explanation of the behaviour by Daniele Palmas during
discussion on linux-usb.
"This is what happens when the device is turned on (without modifying
the drivers):
[155492.352031] usb 1-3: new high-speed USB device number 27 using ehci-pci
[155492.485429] usb 1-3: config 1 interface 0 altsetting 0 endpoint 0x81 has an invalid bInterval 255, changing to 11
[155492.485436] usb 1-3: New USB device found, idVendor=058b, idProduct=0041
[155492.485439] usb 1-3: New USB device strings: Mfr=0, Product=0, SerialNumber=0
[155492.485952] cdc_acm 1-3:1.0: ttyACM0: USB ACM device
This is the flashing device that is caught by the cdc-acm driver. Once
the ttyACM appears, the application starts sending a magic string
(simple write on the file descriptor) to keep the device in flashing
mode. If this magic string is not properly received in a certain time
interval, the modem goes on in normal operative mode:
[155493.748094] usb 1-3: USB disconnect, device number 27
[155494.916025] usb 1-3: new high-speed USB device number 28 using ehci-pci
[155495.059978] usb 1-3: New USB device found, idVendor=1bc7, idProduct=0021
[155495.059983] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[155495.059986] usb 1-3: Product: 6 CDC-ACM + 1 CDC-ECM
[155495.059989] usb 1-3: Manufacturer: Telit
[155495.059992] usb 1-3: SerialNumber: 359658044004697
[155495.138958] cdc_acm 1-3:1.0: ttyACM0: USB ACM device
[155495.140832] cdc_acm 1-3:1.2: ttyACM1: USB ACM device
[155495.142827] cdc_acm 1-3:1.4: ttyACM2: USB ACM device
[155495.144462] cdc_acm 1-3:1.6: ttyACM3: USB ACM device
[155495.145967] cdc_acm 1-3:1.8: ttyACM4: USB ACM device
[155495.147588] cdc_acm 1-3:1.10: ttyACM5: USB ACM device
[155495.154322] cdc_ether 1-3:1.12 wwan0: register 'cdc_ether' at usb-0000:00:1a.7-3, Mobile Broadband Network Device, 00:00:11:12:13:14
Using the cdc-acm driver, the string, though being sent in the same way
than using the usb-serial-simple driver (I can confirm that the data is
passing properly since I used an hw usb sniffer), does not make the
device to stay in flashing mode."
Signed-off-by: Jonas Jonsson <jonas@ludd.ltu.se>
Tested-by: Daniele Palmas <dnlplm@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
CP2110 ID (0x10c4, 0xea80) doesn't belong here because it's a HID
and completely different from CP210x devices.
Signed-off-by: Konstantin Shkolnyy <konstantin.shkolnyy@gmail.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
This patch make sure that all necessary members of dwc2_hsotg
are initialized before the irq handler is requested. So
the kernel oops triggered by dwc2_handle_common_intr has
been fixed.
dwc2 20980000.usb: Configuration mismatch. Forcing host mode
dwc2 20980000.usb: no platform data or transceiver defined
Unable to handle kernel paging request at virtual address cc860040
pgd = c0004000
[cc860040] *pgd=0b41e811, *pte=00000000, *ppte=00000000
Internal error: Oops: 7 [#1] ARM
CPU: 0 PID: 1 Comm: swapper Not tainted 4.3.0-rc3+ #19
Hardware name: BCM2835
task: cb494000 ti: cb4d0000 task.ti: cb4d0000
PC is at dwc2_is_controller_alive+0x18/0x34
LR is at dwc2_handle_common_intr+0x24/0xb60
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
It is not permitted to set task state before lock. usblp_wwait sets
the state to TASK_INTERRUPTIBLE and calls mutex_lock_interruptible.
Upon return from that function, the state will be TASK_RUNNING again.
This is clearly a bug and a warning is generated with LOCKDEP too:
WARNING: CPU: 1 PID: 5109 at kernel/sched/core.c:7404 __might_sleep+0x7d/0x90()
do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffffa0c588d0>] usblp_wwait+0xa0/0x310 [usblp]
Modules linked in: ...
CPU: 1 PID: 5109 Comm: captmon Tainted: G W 4.2.5-0.gef2823b-default #1
Hardware name: LENOVO 23252SG/23252SG, BIOS G2ET33WW (1.13 ) 07/24/2012
ffffffff81a4edce ffff880236ec7ba8 ffffffff81716651 0000000000000000
ffff880236ec7bf8 ffff880236ec7be8 ffffffff8106e146 0000000000000282
ffffffff81a50119 000000000000028b 0000000000000000 ffff8802dab7c508
Call Trace:
...
[<ffffffff8106e1c6>] warn_slowpath_fmt+0x46/0x50
[<ffffffff8109a8bd>] __might_sleep+0x7d/0x90
[<ffffffff8171b20f>] mutex_lock_interruptible_nested+0x2f/0x4b0
[<ffffffffa0c588fc>] usblp_wwait+0xcc/0x310 [usblp]
[<ffffffffa0c58bb2>] usblp_write+0x72/0x350 [usblp]
[<ffffffff8121ed98>] __vfs_write+0x28/0xf0
...
Commit 7f477358e2 (usblp: Implement the
ENOSPC convention) moved the set prior locking. So move it back after
the lock.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Fixes: 7f477358e2 ("usblp: Implement the ENOSPC convention")
Acked-By: Pete Zaitcev <zaitcev@yahoo.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
When choose randconfig for kernel build, it reports below warning:
"warning: (USB_OTG_FSM && FSL_USB2_OTG && USB_MV_OTG) selects USB_OTG
which has unmet direct dependencies (USB_SUPPORT && USB && PM)"
In fact, USB_OTG is visible symbol and depends on PM, so the driver
needs to depend on it to reduce dependency problem.
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Cc: Felipe Balbi <balbi@ti.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Thomas reports
"
4gsystems sells two total different LTE-surfsticks under the same name.
..
The newer version of XS Stick W100 is from "omega"
..
Under windows the driver switches to the same ID, and uses MI03\6 for
network and MI01\6 for modem.
..
echo "1c9e 9b01" > /sys/bus/usb/drivers/qmi_wwan/new_id
echo "1c9e 9b01" > /sys/bus/usb-serial/drivers/option1/new_id
T: Bus=01 Lev=01 Prnt=01 Port=03 Cnt=01 Dev#= 4 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=1c9e ProdID=9b01 Rev=02.32
S: Manufacturer=USB Modem
S: Product=USB Modem
S: SerialNumber=
C: #Ifs= 5 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#= 0 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 1 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=option
I: If#= 3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan
I: If#= 4 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
Now all important things are there:
wwp0s29f7u2i3 (net), ttyUSB2 (at), cdc-wdm0 (qmi), ttyUSB1 (at)
There is also ttyUSB0, but it is not usable, at least not for at.
The device works well with qmi and ModemManager-NetworkManager.
"
Reported-by: Thomas Schäfer <tschaefer@t-online.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Here are some new device ids, support for an odd qcserial Gobi interface
layout and a fix for the qcserial Huawei interface layout.
Signed-off-by: Johan Hovold <johan@kernel.org>
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Merge tag 'usb-serial-4.4-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for v4.4-rc2
Here are some new device ids, support for an odd qcserial Gobi interface
layout and a fix for the qcserial Huawei interface layout.
Signed-off-by: Johan Hovold <johan@kernel.org>
Add "fsl,imx6ul-usbphy" compatible string for iMX6ul usb phy
Signed-off-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Li Jun <jun.li@freescale.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This patch fixes a memory leak that occurs when an endpoint fails to enqueue
the request. If that happens the complete function will never be called, thus
never freeing the request.
Signed-off-by: Felipe F. Tonello <eu@felipetonello.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This makes sure f_midi doesn't try to enqueue data when the IN endpoint is
disabled, ie, USB cable is disconnected.
Reviewed-by: Robert Baldyga <r.baldyga@samsung.com>
Signed-off-by: Felipe F. Tonello <eu@felipetonello.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Fixes commit 09a75e8577
("usb: dwc2: refactor common low-level hw code to platform.c")
The above commit consolidated the low-level phy access into a common
location. This change made the otg clk a requirement and broke some
platforms when it was moved into platform.c.
So make clk handling optional again.
Acked-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: John Youn <johnyoun@synopsys.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Fixes: 09a75e8577 ("usb: dwc2: refactor common low-level hw code to platform.c")
Signed-off-by: Felipe Balbi <balbi@ti.com>
When searching for PHYs, any error was treated as if the PHY did not
exist or was not specified. Thus the probe function did not
correctly return error conditions such as -EPROBE_DEFER.
Fixed so that only a non-existing PHY is ignored and any other error
is returned.
Acked-by: Eric Anholt <eric@anholt.net>
Reported-by: Alexander Aring <alex.aring@gmail.com>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
