linux/drivers/staging/android/sync.c, branch v3.18

Merge 3.17-rc5 into staging-next.

2014-09-15T02:33:47Z

This fixes a merge conflict in lustre, and we want the other fixes that went into 3.17-rc5 as well. Signed-off-by: Greg Kroah-Hartman

android: fix reference leak in sync_fence_create

2014-09-08T20:42:00Z

According to the documentation sync_fence_create takes ownership of the point, not a reference on the point. This fixes a memory leak introduced in 3.17's android fence rework. Signed-off-by: Maarten Lankhorst Cc: Colin Cross Cc: Dan Carpenter Signed-off-by: Greg Kroah-Hartman

staging: android: use braces on all arms of if

2014-09-02T19:28:45Z

Signed-off-by: Grzegorz Swirski Signed-off-by: Greg Kroah-Hartman

staging: android: sync: Fix checkpatch warning: Missing a blank line after declarations

2014-08-30T21:04:58Z

Signed-off-by: Dipak Zope Signed-off-by: Greg Kroah-Hartman

Merge tag 'staging-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging

2014-08-05T01:36:12Z

Pull staging driver updates from Greg KH: "Here's the big pull request for the staging driver tree for 3.17-rc1. Lots of things in here, over 2000 patches, but the best part is this: 1480 files changed, 39070 insertions(+), 254659 deletions(-) Thanks to the great work of Kristina Martšenko, 14 different staging drivers have been removed from the tree as they were obsolete and no one was willing to work on cleaning them up. Other than the driver removals, loads of cleanups are in here (comedi, lustre, etc.) as well as the usual IIO driver updates and additions. All of this has been in the linux-next tree for a while" * tag 'staging-3.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging: (2199 commits) staging: comedi: addi_apci_1564: remove diagnostic interrupt support code staging: comedi: addi_apci_1564: add subdevice to check diagnostic status staging: wlan-ng: coding style problem fix staging: wlan-ng: fixing coding style problems staging: comedi: ii_pci20kc: request and ioremap memory staging: lustre: bitwise vs logical typo staging: dgnc: Remove unneeded dgnc_trace.c and dgnc_trace.h staging: dgnc: rephrase comment staging: comedi: ni_tio: remove some dead code staging: rtl8723au: Fix static symbol sparse warning staging: rtl8723au: usb_dvobj_init(): Remove unused variable 'pdev_desc' staging: rtl8723au: Do not duplicate kernel provided USB macros staging: rtl8723au: Remove never set struct pwrctrl_priv.bHWPowerdown staging: rtl8723au: Remove two never set variables staging: rtl8723au: RSSI_test is never set staging:r8190: coding style: Fixed checkpatch reported Error staging:r8180: coding style: Fixed too long lines staging:r8180: coding style: Fixed commenting style staging: lustre: ptlrpc: lproc_ptlrpc.c - fix dereferenceing user space buffer staging: lustre: ldlm: ldlm_resource.c - fix dereferenceing user space buffer ...

staging: android: Clean up else statement from sync_fence_poll()

2014-07-15T19:08:13Z

Kernel coding style. Remove useless else statement after return. Signed-off-by: Lucas Tanure Signed-off-by: Greg Kroah-Hartman

android: convert sync to fence api, v6

2014-07-08T20:28:26Z

Just to show it's easy. Android syncpoints can be mapped to a timeline. This removes the need to maintain a separate api for synchronization. I've left the android trace events in place, but the core fence events should already be sufficient for debugging. v2: - Call fence_remove_callback in sync_fence_free if not all fences have fired. v3: - Merge Colin Cross' bugfixes, and the android fence merge optimization. v4: - Merge with the upstream fixes. v5: - Fix small style issues pointed out by Thomas Hellstrom. v6: - Fix for updates to fence api. Signed-off-by: Maarten Lankhorst Acked-by: John Stultz Acked-by: Sumit Semwal Acked-by: Daniel Vetter Signed-off-by: Greg Kroah-Hartman

staging: android: describe use of memory barrier on sync.c

2014-05-25T18:09:14Z

Added comments describing the purpose of using write memory barrier in the context of sync_timeline_destory. Signed-off-by: Niv Yehezkel Signed-off-by: Greg Kroah-Hartman

staging: android: fix missing a blank line after declarations

2014-05-03T23:46:30Z

This patch fixes "Missing a blank line after declarations" warnings. Signed-off-by: Seunghun Lee Signed-off-by: Greg Kroah-Hartman

staging: android: sync: Signal pt before sync_timeline object gets destroyed

2014-02-07T17:36:27Z

There is a race condition Assume we have *one* sync_fence object, with *one* sync_pt which belongs to *one* sync_timeline, given this condition, sync_timeline->kref will have two counts, one for sync_timeline (implicit) and another for sync_pt. Assume following is the situation on CPU Theead-1 : (Thread which calls sync_timeline_destroy()) -> (some function calls) -> sync_timeline_destory() -> sync_timeline_signal() (CPU is inside this function after putting reference to sync_timeline) At this time Thread-2 comes and does following Thread-2 : (fclose on fence fd) > sync_fence_release() -> because of fclose() on fence object -> sync_fence_free() -> sync_pt_free() -> kref_put(&pt->parent->kref, sync_timeline_free); -> sync_timeline_free() (CPU is inside this because this time kref will be zero after _put) Thread-2 will free sync_timeline object before Thread-1 has finished its work inside sync_timeline_signal. With this change we signals all sync_pt before putting reference to sync_timeline object. Cc: Colin Cross Cc: Android Kernel Team Signed-off-by: Prakash Kamliya [jstultz: minor commit subject tweak] Signed-off-by: John Stultz Signed-off-by: Greg Kroah-Hartman