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path: root/drivers/uwb/rsv.c
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2015-10-24uwb: rsv: Use setup_timerMuhammad Falak R Wani1-6/+3
Use timer API function setup_timer instead of init_timer to initialize the timer. Signed-off-by: Muhammad Falak R Wani <falakreyaz@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-11-03uwb: Remove bogus colon after newline from debug messageGeert Uytterhoeven1-2/+2
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27uwb: add error messages when reservation establish failsThomas Pugliese1-2/+12
Add better error messages during the channel change/reservation establish process. Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-05-27uwb: fix channel change failureThomas Pugliese1-1/+6
Make the transition to the UWB_RSV_STATE_NONE state synchronous so that there is not a race between uwb_rsv_terminate and uwb_rsv_establish. uwb_rsv_terminate would set the rsv->state to UWB_RSV_STATE_NONE but did not release the stream resource until a 320ms timeout had expired. If a user called uwb_rsv_establish during that time, it could fail to establish the reservation because no stream resources were available. This patch removes the timer from the uwb_rsv_terminate process since it is not needed when transitioning to UWB_RSV_STATE_NONE. Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20uwb: use uwb_rsv_callback instead of calling rsv->callback directlyThomas Pugliese1-1/+1
Use uwb_rsv_callback wrapper instead of calling rsv->callback directly. uwb_rsv_callback checks for NULL and is used by other callers of the callback routine. Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-12-20uwb: whitespace and comment cleanupsThomas Pugliese1-7/+7
various whitespace and comment cleanups Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-05-21usb: uwb: use correct locking calls for rc datatpugliese1-2/+2
The rc object's members can be accessed from both a timer and URB callback. Use spin_*_irq instead of spin_*_bh. Signed-off-by: Thomas Pugliese <thomas.pugliese@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-04-29uwb: rename random32() to prandom_u32()Akinobu Mita1-2/+2
Use preferable function name which implies using a pseudo-random number generator. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.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>
2010-03-30include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo1-0/+1
implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2009-01-23uwb: lock rc->rsvs_lock with spin_lock_bh()David Vrabel1-2/+2
rc->rsvs_lock may be taken in a timer so lock it with spin_lock_bh(). Signed-off-by: David Vrabel <david.vrabel@csr.com>
2009-01-06uwb: safely remove all reservationsDavid Vrabel1-4/+13
When removing all reservations during shutdown, terminate them first and then wait for any pending timeout work to complete. This prevents the timeout work from running after the reservation has been freed. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-12-12uwb: fix oops when terminating an already terminated reservationDavid Vrabel1-1/+2
Calling uwb_rsv_terminate() on a reservation already in UWB_RSV_STATE_NONE should do nothing. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-12-12uwb: improved MAS allocator and reservation conflict handlingStefano Panella1-100/+382
Greatly enhance the MAS allocator: - Handle row and column reservations. - Permit all the available MAS to be allocated. - Follows the WiMedia rules on MAS selection. Take appropriate action when reservation conflicts are detected. - Correctly identify which reservation wins the conflict. - Protect alien BP reservations. - If an owned reservation loses, resize/move it. - Follow the backoff procedure before requesting additional MAS. When reservations are terminated, move the remaining reservations (if necessary) so they keep following the MAS allocation rules. Signed-off-by: Stefano Panella <stefano.panella@csr.com> Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-11-19uwb: add basic radio managerDavid Vrabel1-2/+2
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>
2008-11-17uwb: add pal parameter to new reservation callbackDavid Vrabel1-1/+1
The pal parameter allows PALs to retrieve their PAL-specific data structure. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-11-07uwb: don't unbind the radio controller driver when resettingDavid Vrabel1-9/+20
Use pre_reset and post_reset methods to avoid unbinding the radio controller driver after a uwb_rc_reset_all() call. This avoids a deadlock in uwb_rc_rm() when waiting for the uwb event thread to stop. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-10-31uwb: remove unused #include <version.h>Huang Weiyi1-1/+0
The file(s) below do not use LINUX_VERSION_CODE nor KERNEL_VERSION. drivers/uwb/drp-ie.c drivers/uwb/hwa-rc.c drivers/uwb/i1480/dfu/usb.c drivers/uwb/i1480/i1480u-wlp/lc.c drivers/uwb/i1480/i1480u-wlp/sysfs.c drivers/uwb/rsv.c drivers/uwb/whc-rc.c This patch removes the said #include <version.h>. Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-10-28uwb: reference count reservationsDavid Vrabel1-16/+32
Reference counting the struct uwb_rsv's is safer and easier to get right than the transferring ownership of the structures from the PAL to reservation manager. This fixes an oops in the debug PAL after a reservation timed out. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-10-28uwb: target reservations shouldn't get streamsDavid Vrabel1-2/+2
The reservation owner should decide the stream index to use based on what reservations it's created. Signed-off-by: David Vrabel <david.vrabel@csr.com>
2008-09-17uwb: add the UWB stack (reservation manager)David Vrabel1-0/+680
DRP and reservation management. Signed-off-by: David Vrabel <david.vrabel@csr.com>