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2019-11-16xhci: Add tracing for xhci doorbell register writesMathias Nyman3-0/+61
Trace when a register in the doorbell array is written, both for host controller command doorbell and device doorbells, including for which endpoint and stream Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/1573836603-10871-3-git-send-email-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-16usb: host: xhci: update event ring dequeue pointer on purposePeter Chen1-17/+43
On some situations, the software handles TRB events slower than adding TRBs, then xhci_handle_event can't return zero long time, the xHC will consider the event ring is full, and trigger "Event Ring Full" error, but in fact, the software has already finished lots of events, just no chance to update ERDP (event ring dequeue pointer). In this commit, we force update ERDP if half of TRBS_PER_SEGMENT events have handled to avoid "Event Ring Full" error. Signed-off-by: Peter Chen <peter.chen@nxp.com> Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com> Link: https://lore.kernel.org/r/1573836603-10871-2-git-send-email-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14USB: serial: ftdi_sio: add device IDs for U-Blox C099-F9PFabio D'Urso2-0/+10
This device presents itself as a USB hub with three attached devices: - An ACM serial port connected to the GPS module (not affected by this commit) - An FTDI serial port connected to the GPS module (1546:0502) - Another FTDI serial port connected to the ODIN-W2 radio module (1546:0503) This commit registers U-Blox's VID and the PIDs of the second and third devices. Datasheet: https://www.u-blox.com/sites/default/files/C099-F9P-AppBoard-Mbed-OS3-FW_UserGuide_%28UBX-18063024%29.pdf Signed-off-by: Fabio D'Urso <fabiodurso@hotmail.it> Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-14usb: gadget: udc: s3c2410_udc: create debugfs directory under usb rootChunfeng Yun1-1/+2
Now the USB gadget subsystem can use the USB debugfs root directory, so move it's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-13-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14usb: gadget: pxa27x: create debugfs directory under usb rootChunfeng Yun1-1/+1
Now the USB gadget subsystem can use the USB debugfs root directory, so move it's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-11-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14usb: gadget: udc: renesas_usb3: create debugfs directory under usb rootChunfeng Yun1-1/+1
Now the USB gadget subsystem can use the USB debugfs root directory, so move it's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-10-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14usb: gadget: bcm63xx_udc: create debugfs directory under usb rootChunfeng Yun1-1/+1
Now the USB gadget subsystem can use the USB debugfs root directory, so move it's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-8-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14usb: dwc2: create debugfs directory under usb rootChunfeng Yun1-1/+1
Now the USB gadget subsystem can use the USB debugfs root directory, so move dwc2's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-7-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14usb: musb: dsps: create debugfs directory under usb rootChunfeng Yun1-1/+1
Now the USB gadget subsystem can use the USB debugfs root directory, so move dsps's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-6-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14media: uvcvideo: drop error check of debugfs_create_dir()Chunfeng Yun1-9/+1
No need check the return value of debugfs_create_dir() Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-1-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14usb: dwc3: create debugfs directory under usb rootChunfeng Yun1-1/+1
Now the USB gadget subsystem can use the USB debugfs root directory, so move dwc3's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-4-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14usb: host: imx21: create debugfs directory under usb rootChunfeng Yun1-1/+1
Move it's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-3-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14usb: chipidea: debug: create debugfs directory under usb rootChunfeng Yun1-1/+1
Move it's directory from the root of the debugfs filesystem into the root of usb Signed-off-by: Chunfeng Yun <chunfeng.yun@mediatek.com> Link: https://lore.kernel.org/r/1573541519-28488-2-git-send-email-chunfeng.yun@mediatek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-14usb: renesas_usbhs: Use dma_request_chan() directly for channel requestPeter Ujfalusi1-2/+2
dma_request_slave_channel_reason() is: #define dma_request_slave_channel_reason(dev, name) \ dma_request_chan(dev, name) Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Link: https://lore.kernel.org/r/20191113094838.2141-1-peter.ujfalusi@ti.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-13USB: serial: option: add support for Foxconn T77W968 LTE modulesAleksander Morgado1-0/+4
These are the Foxconn-branded variants of the Dell DW5821e modules, same USB layout as those. The device exposes AT, NMEA and DIAG ports in both USB configurations. P: Vendor=0489 ProdID=e0b4 Rev=03.18 S: Manufacturer=FII S: Product=T77W968 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#=0x0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan I: If#=0x1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option P: Vendor=0489 ProdID=e0b4 Rev=03.18 S: Manufacturer=FII S: Product=T77W968 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 7 Cfg#= 2 Atr=a0 MxPwr=500mA I: If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim I: If#=0x1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#=0x6 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> [ johan: drop id defines ] Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-13usbip: Fix uninitialized symbol 'nents' in stub_recv_cmd_submit()Suwan Kim1-18/+32
Smatch reported that nents is not initialized and used in stub_recv_cmd_submit(). nents is currently initialized by sgl_alloc() and used to allocate multiple URBs when host controller doesn't support scatter-gather DMA. The use of uninitialized nents means that buf_len is zero and use_sg is true. But buffer length should not be zero when an URB uses scatter-gather DMA. To prevent this situation, add the conditional that checks buf_len and use_sg. And move the use of nents right after the sgl_alloc() to avoid the use of uninitialized nents. If the error occurs, it adds SDEV_EVENT_ERROR_MALLOC and stub_priv will be released by stub event handler and connection will be shut down. Fixes: ea44d190764b ("usbip: Implement SG support to vhci-hcd and stub driver") Reported-by: kbuild test robot <lkp@intel.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Suwan Kim <suwan.kim027@gmail.com> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191111141035.27788-1-suwan.kim027@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-12USBIP: add config dependency for SGL_ALLOCOliver Neukum1-0/+1
USBIP uses lib/scatterlist.h Hence it needs to set CONFIG_SGL_ALLOC Signed-off-by: Oliver Neukum <oneukum@suse.com> Cc: stable <stable@vger.kernel.org> Acked-by: Shuah Khan <skhan@linuxfoundation.org> Link: https://lore.kernel.org/r/20191112154939.21217-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-12USB: serial: mos7840: drop port open flagJohan Hovold1-28/+1
Drop the redundant port open flag and corresponding checks. USB serial core will not call any of these driver callbacks for a closed port, and the write URBs are stopped at close(). Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: drop read-urb checkJohan Hovold1-11/+0
Drop read-urb check which is always false from completion the callback. The driver read-urb pointer is set at every open and is never cleared. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: drop port driver data accessorsJohan Hovold1-91/+13
Drop the custom port driver data accessors and paranoid sanity checks. The driver data is not cleared until the driver is unbound. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: drop serial struct accessorJohan Hovold1-30/+0
Drop the helper used to retrieve the serial struct pointer from the port structure. Note that this helper was only used when the serial structure was actually not needed. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: drop paranoid serial checksJohan Hovold1-36/+2
Drop the likewise paranoid serial structure sanity checks. USB serial core sets the serial pointer in the port structures at initialisation and it is never cleared, and similar for the serial structure type. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: drop paranoid port checksJohan Hovold1-84/+8
Drop the paranoid port structure sanity checks which are confusing at best. The driver data port pointer is set at port probe and never cleared, while USB serial core sets the tty driver data at install and won't call any driver functions with a NULL port pointer. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: drop redundant urb context checkJohan Hovold1-5/+1
The bulk-in URB context is set to the driver-data struct at open and is never cleared so drop the redundant check in the completion callback. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: rip out broken interrupt handlingJohan Hovold1-291/+3
The interrupt handling is completely broken and has in fact never been been enabled due to an inverted test for an interrupt endpoint in open() that prevented the interrupt URB from being submitted. Other highlights include missing interrupt URB resubmission (had it ever been submitted), missing locking when managing the open-port count, and NULL-pointer dereferences that could have been triggered by a malicious device. Rip out this broken crap which is beyond repair instead of pretending we support this feature. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: fix probe error handlingJohan Hovold1-20/+28
The driver would return success and leave the port structures half-initialised if any of the register accesses during probe fails. This would specifically leave the port control urb unallocated, something which could trigger a NULL pointer dereference on interrupt events. Fortunately the interrupt implementation is completely broken and has never even been enabled... Note that the zero-length-enable register write used to set the zle-flag for all ports is moved to attach. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: document MCS7810 detection hackJohan Hovold1-0/+7
Document the MCS7810 detection hack which relies on having the GPO and GPI pins connected as recommended by ASIX. Note that GPO (pin 42) is really RTS of the third port which will be toggled for the corresponding physical port on two- and four-port devices. Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: clean up device-type handlingJohan Hovold1-77/+44
The current device-type detection is fragile and can't really be relied upon. Instead of sprinkling device-id conditionals throughout the driver, let's use the device-id table to encode the number of ports and whether the device has a driver-controlled activity LED (MCS7810). Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7840: fix remote wakeupJohan Hovold1-5/+0
The driver was setting the device remote-wakeup feature during probe in violation of the USB specification (which says it should only be set just prior to suspending the device). This could potentially waste power during suspend as well as lead to spurious wakeups. Note that USB core would clear the remote-wakeup feature at first resume. Fixes: 3f5429746d91 ("USB: Moschip 7840 USB-Serial Driver") Cc: stable <stable@vger.kernel.org> # 2.6.19 Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-12USB: serial: mos7720: fix remote wakeupJohan Hovold1-4/+0
The driver was setting the device remote-wakeup feature during probe in violation of the USB specification (which says it should only be set just prior to suspending the device). This could potentially waste power during suspend as well as lead to spurious wakeups. Note that USB core would clear the remote-wakeup feature at first resume. Fixes: 0f64478cbc7a ("USB: add USB serial mos7720 driver") Cc: stable <stable@vger.kernel.org> # 2.6.19 Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-11USB: chaoskey: fix error case of a timeoutOliver Neukum1-3/+21
In case of a timeout or if a signal aborts a read communication with the device needs to be ended lest we overwrite an active URB the next time we do IO to the device, as the URB may still be active. Signed-off-by: Oliver Neukum <oneukum@suse.de> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191107142856.16774-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-11dt-bindings: usb: rt1711h: Add connector bindingsJohn Stultz1-0/+29
Add connector binding documentation for Richtek RT1711H Type-C chip driver It was noted by Rob Herring that the rt1711h binding docs doesn't include the connector binding. Thus this patch adds such documentation following the details in Documentation/devicetree/bindings/usb/typec-tcpci.txt Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> CC: ShuFan Lee <shufan_lee@richtek.com> Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com> Cc: Suzuki K Poulose <suzuki.poulose@arm.com> Cc: Chunfeng Yun <chunfeng.yun@mediatek.com> Cc: Yu Chen <chenyu56@huawei.com> Cc: Felipe Balbi <balbi@kernel.org> Cc: Hans de Goede <hdegoede@redhat.com> Cc: Andy Shevchenko <andy.shevchenko@gmail.com> Cc: Jun Li <lijun.kernel@gmail.com> Cc: Valentin Schneider <valentin.schneider@arm.com> Cc: linux-usb@vger.kernel.org Cc: devicetree@vger.kernel.org Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: John Stultz <john.stultz@linaro.org> Link: https://lore.kernel.org/r/20191108005657.31464-1-john.stultz@linaro.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-11dt-bindings: usb: renesas_usbhs: convert bindings to json-schemaYoshihiro Shimoda2-58/+126
Convert Renesas USBHS (HS-USB) controller bindings documentation to json-schema. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/1573102944-11095-1-git-send-email-yoshihiro.shimoda.uh@renesas.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: serial: option: add support for DW5821e with eSIM supportAleksander Morgado1-0/+3
The device exposes AT, NMEA and DIAG ports in both USB configurations. Exactly same layout as the default DW5821e module, just a different vid/pid. P: Vendor=413c ProdID=81e0 Rev=03.18 S: Manufacturer=Dell Inc. S: Product=DW5821e-eSIM Snapdragon X20 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 6 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#=0x0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=ff Prot=ff Driver=qmi_wwan I: If#=0x1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option P: Vendor=413c ProdID=81e0 Rev=03.18 S: Manufacturer=Dell Inc. S: Product=DW5821e-eSIM Snapdragon X20 LTE S: SerialNumber=0123456789ABCDEF C: #Ifs= 7 Cfg#= 2 Atr=a0 MxPwr=500mA I: If#=0x0 Alt= 0 #EPs= 1 Cls=02(commc) Sub=0e Prot=00 Driver=cdc_mbim I: If#=0x1 Alt= 1 #EPs= 2 Cls=0a(data ) Sub=00 Prot=02 Driver=cdc_mbim I: If#=0x2 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x3 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x4 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=00 Driver=option I: If#=0x5 Alt= 0 #EPs= 2 Cls=ff(vend.) Sub=ff Prot=ff Driver=option I: If#=0x6 Alt= 0 #EPs= 1 Cls=ff(vend.) Sub=ff Prot=ff Driver=(none) Signed-off-by: Aleksander Morgado <aleksander@aleksander.es> Cc: stable <stable@vger.kernel.org> Signed-off-by: Johan Hovold <johan@kernel.org>
2019-11-07usbip: tools: fix fd leakage in the function of read_attr_usbip_statusHewenliang1-1/+1
We should close the fd before the return of read_attr_usbip_status. Fixes: 3391ba0e2792 ("usbip: tools: Extract generic code to be shared with vudc backend") Signed-off-by: Hewenliang <hewenliang4@huawei.com> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191025043515.20053-1-hewenliang4@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07appledisplay: fix error handling in the scheduled workOliver Neukum1-1/+7
The work item can operate on 1. stale memory left over from the last transfer the actual length of the data transfered needs to be checked 2. memory already freed the error handling in appledisplay_probe() needs to cancel the work in that case Reported-and-tested-by: syzbot+495dab1f175edc9c2f13@syzkaller.appspotmail.com Signed-off-by: Oliver Neukum <oneukum@suse.com> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20191106124902.7765-1-oneukum@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: drop superfluous newlinesJohan Hovold1-5/+0
Drop some superfluous newlines before conditionals which made the code harder to read. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-15-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: drop superfluous bracketsJohan Hovold1-12/+6
Drop superfluous brackets around single-line blocks. Also add missing white space around operators in a for-expression being modified. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-14-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: clean up runaway white spaceJohan Hovold1-85/+87
Drop space between function identifiers and opening parenthesis, which was no longer even used consistently within the driver. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-13-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: drop redundant endianness commentsJohan Hovold1-3/+3
The endianness is already encoded in the type specifier so drop the redundant little-endian comments from the message structs. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-12-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: drop unnecessary packed attributesJohan Hovold1-2/+2
Drop the packed attributes from the two message structs whose fields are naturally aligned and do not have any padding. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-11-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: clean up pointer declarations in driver dataJohan Hovold1-8/+8
Clean up the pointer declarations in the driver data, whose style wasn't even consistent with the rest of the driver. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-10-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: remove tower_abort_transfers()Johan Hovold1-15/+5
Drop the tower_abort_transfers() function which is now only called from release and instead explicitly kill the two URBs. This incidentally also fixes the outdated comment about freeing memory. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-9-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: stop interrupt-out URB unconditionallyJohan Hovold1-2/+1
Stop also the interrupt-out URB unconditionally in tower_abort_transfers() which is called from release() (for connected devices). Calling usb_kill_urb() for an idle URB is perfectly fine. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-8-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: drop redundant interrupt-in running flagJohan Hovold1-16/+5
Drop the redundant interrupt-in-running flag, which tried to keep track of when the interrupt-in URB was in flight. This isn't needed since we can stop the URB unconditionally in tower_abort_transfers() and the URB can not be submitted while usb_kill_urb() is running anyway. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-7-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: drop noisy disconnect messagesJohan Hovold1-2/+0
User space already sees -ENODEV in case it tries to do I/O post disconnect, no need to spam the logs with printk messages that don't even include any device-id information. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-6-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: drop redundant open_count checkJohan Hovold1-8/+0
Drop redundant open_count check in release; the open count is used as a flag and is only set to 0 or 1. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-5-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: zero driver data at allocationJohan Hovold1-23/+2
Zero the driver data at allocation rather than depend on explicit zeroing, which easy to miss. Also drop an unnecessary driver-data pointer initialisation. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-4-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: drop redundant NULL checkJohan Hovold1-3/+0
Drop redundant NULL check from tower_abort_transfers(), which is never called with a NULL argument. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-3-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-11-07USB: legousbtower: drop redundant MODULE_LICENSE ifdefJohan Hovold1-2/+0
The MODULE_LICENSE macro is unconditionally defined in module.h, no need to ifdef its use. Signed-off-by: Johan Hovold <johan@kernel.org> Link: https://lore.kernel.org/r/20191105084152.16322-2-johan@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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