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2016-03-03usbip: move usbip_protocol.txt to DocumentationChristian Lamparter1-358/+0
The usbip_protocol.txt, a document which describes usbip's inner workings is currently located in the projects source directory (drivers/usb/usbip/...). This patch moves it to Documentation/usb. This discussion was brought up by Guy Harris [0] during the review of the USBIP dissector I wrote. For anyone interested: support is available with the latest wireshark master/dev tree. Simply select a packet from the usbip's tcp-stream you are intrested on and select the USBIP as the protocol in the "Decode As" dialog box [1]. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> [0] <https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=12127#c2> [1] <https://www.wireshark.org/docs/wsug_html_chunked/ChCustProtocolDissectionSection.html#ChAdvDecodeAs> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-02-03usb: usbip: Fix possible deadlocks reported by lockdepAndrew Goodbody5-65/+91
Change spin_lock calls to spin_lock_irqsave to prevent attmpted recursive lock taking in interrupt context. This patch fixes Bug 109351 https://bugzilla.kernel.org/show_bug.cgi?id=109351 Signed-off-by: Andrew Goodbody <andrew.goodbody@cambrionix.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-04usbip: vhci_hcd: at unlink, return -EIDRM if vhci_rx took the urbIgor Kotrasinski1-1/+1
In a situation where the urb is about to be returned or was never there, we should return -EIDRM (as per usb_hcd_check_unlink_urb). This is exactly the situation when the urb is picked up by vhci_rx before we access priv. Return -EIDRM rather than 0 when this happens. Signed-off-by: Igor Kotrasinski <i.kotrasinsk@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-04usbip: vhci_hcd: only return urb at enqueue when servedIgor Kotrasinski1-1/+3
We handle USB_REQ_SET_ADDRESS at enqueue, so we want to perform cleanup and giveback the urb. We should not call usb_hcd_giveback_urb when we're cleaning up after a failed enqueue, though. Only giveback the urb at cleanup when we claim to have served it. Signed-off-by: Igor Kotrasinski <i.kotrasinsk@samsung.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-10-04usbip: vhci_hcd: Convert use of __constant_cpu_to_le16 to cpu_to_le16Vaishali Thakkar1-1/+1
In big endian cases, macro cpu_to_le16 unfolds to __swab16 which provides special case for constants. In little endian cases, __constant_cpu_to_le16 and cpu_to_le16 expand directly to the same expression. So, replace __constant_cpu_to_le16 with cpu_to_le16 with the goal of getting rid of the definition of __constant_cpu_to_le16 completely. The semantic patch that performs this transformation is as follows: @@expression x;@@ - __constant_cpu_to_le16(x) + cpu_to_le16(x) Signed-off-by: Vaishali Thakkar <vthakkar1994@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-04-03usbip: vhci_hcd: use USB_DT_HUBSergei Shtylyov1-1/+1
Fix using the bare number to set the 'bDescriptorType' field of the Hub Descriptor while the value is #define'd in <linux/usb/ch11.h>. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Valentina Manea <valentina.manea.m@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-01-25usbip: vhci_hcd: use HUB_CHAR_*Sergei Shtylyov1-1/+2
Fix using the bare number to set the 'wHubCharacteristics' field of the Hub Descriptor while the values are #define'd in <linux/usb/ch11.h>. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com> Acked-by: Valentina Manea <valentina.manea.m@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-12-14Merge tag 'driver-core-3.19-rc1' of ↵Linus Torvalds1-1/+0
git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
2014-12-02usbip: fix error handling in stub_probe()Alexey Khoroshilov1-11/+15
If usb_hub_claim_port() fails, no resources are deallocated and if stub_add_files() fails, port is not released. The patch fixes these issues and rearranges error handling code. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru> Acked-by: Valentina Manea <valentina.manea.m@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-24USB-IP: Deletion of unnecessary checks before the function call "usb_put_dev"Markus Elfring1-6/+3
The usb_put_dev() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Acked-by: Valentina Manea <valentina.manea.m@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-20usb: usbip: drop owner assignment from platform_driversWolfram Sang1-1/+0
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-08-25usbip: remove struct usb_device_id tableValentina Manea1-27/+0
This was used back when usbip-host was an interface device driver; after the conversion to device driver, the table remained unused. Remove it in order to stop receiving a warning about it. Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-08-25usbip: move usbip kernel code out of stagingValentina Manea17-0/+5664
At this point, USB/IP kernel code is fully functional and can be moved out of staging. Signed-off-by: Valentina Manea <valentina.manea.m@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>