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path: root/drivers/uwb/pal.c
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2016-11-01uwb: fix device reference leaksJohan Hovold1-0/+2
This subsystem consistently fails to drop the device reference taken by class_find_device(). Note that some of these lookup functions already take a reference to the returned data, while others claim no reference is needed (or does not seem need one). Fixes: 183b9b592a62 ("uwb: add the UWB stack (core files)") Signed-off-by: Johan Hovold <johan@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-08-12UWB: fix sysfs warning on HWA device unplug.Thomas Pugliese1-2/+38
In the disconnect routine for the hwa_hc interface, it calls uwb_pal_unregister to unregister itself from the UWB subsystem. This function attempts to clean up the link to the host controller directory in the device's UWB radio control interface directory. If the disconnect routine for the radio control interface has already run, the uwb directory will be gone so the call to sysfs_remove_link generates a warning. Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-06-24USB: HWA: fix device probe failureThomas Pugliese1-0/+2
This patch fixes a race condition that caused the HWA_HC interface probe function to occasionally fail. The HWA_HC would attempt to register itself with the HWA_RC by searching for a uwb_rc class device with the same parent device ptr. If the probe function for the HWA_RC interface had yet to run, the uwb_rc class device would not have been created causing the look up to fail and the HWA_HC probe function to return an error causing the device to be unusable. The fix is for the HWA to delay registering with the HWA_RC until receiving the command from userspace to start the wireless channel. It is the responsibility of userspace to ensure that the uwb_rc class device has been created before starting the HWA channel. Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2011-10-31uwb: Add export.h for EXPORT_SYMBOL/THIS_MODULE as requiredPaul Gortmaker1-0/+1
These macros are no longer in module.h and module.h is no longer present everywhere. Call out export.h for the real users who are making use of these macros, or else we'll get things like: CC drivers/uwb/umc-drv.o drivers/uwb/umc-dev.c:42: warning: data definition has no type or storage class drivers/uwb/umc-dev.c:42: warning: type defaults to ‘int’ in declaration of ‘EXPORT_SYMBOL_GPL’ drivers/uwb/umc-dev.c:42: warning: parameter names (without types) in function declaration Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2008-11-26wusb: add debug files for ASL, PZL and DI to the whci-hcd driverDavid Vrabel1-0/+5
Add asl, pzl and di debugfs files to uwb/uwbN/wusbhc for WHCI host controller. These dump the current ASL, PZL and DI buffer. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-11-19uwb: add basic radio managerDavid Vrabel1-9/+11
The UWB radio manager coordinates the use of the radio between the PALs that may be using it. PALs request use of the radio with uwb_radio_start() and the radio manager will start beaconing if its not already doing so. When the last PAL has called uwb_radio_stop() beaconing will be stopped. In the future, the radio manager will have a more sophisticated channel selection algorithm, probably following the Channel Selection Policy from the WiMedia Alliance when it is finalized. For now, channel 9 (BG1, TFC1) is selected. The user may override the channel selected by the radio manager and may force the radio to stop beaconing. The WUSB Host Controller PAL makes use of this and there are two new debug PAL commands that can be used for testing. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-09-17uwb: add symlinks in sysfs between radio controllers and PALsDavid Vrabel1-0/+20
Add a facility for PALs to have symlinks to their radio controller (and vice-versa) and make WUSB host controllers use this. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-09-17uwb: add the UWB stack (core files)Inaky Perez-Gonzalez1-0/+71
UWB device and radio controller device and event management. Signed-off-by: David Vrabel <david.vrabel@csr.com>

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