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author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-15 14:52:16 -0300 |
commit | 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch) | |
tree | e9891aa6c295060d065adffd610c4f49ecf884f3 /drivers/staging/unisys/include/visorbus.h | |
parent | a71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff) |
Linux-libre 4.3.2-gnu
Diffstat (limited to 'drivers/staging/unisys/include/visorbus.h')
-rw-r--r-- | drivers/staging/unisys/include/visorbus.h | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/staging/unisys/include/visorbus.h b/drivers/staging/unisys/include/visorbus.h index e4a21e42e..9235536fa 100644 --- a/drivers/staging/unisys/include/visorbus.h +++ b/drivers/staging/unisys/include/visorbus.h @@ -113,7 +113,8 @@ struct visor_driver { struct driver_attribute version_attr; }; -#define to_visor_driver(x) container_of(x, struct visor_driver, driver) +#define to_visor_driver(x) ((x) ? \ + (container_of(x, struct visor_driver, driver)) : (NULL)) /** A device type for things "plugged" into the visorbus bus */ @@ -200,6 +201,8 @@ bool visorchannel_signalremove(struct visorchannel *channel, u32 queue, void *msg); bool visorchannel_signalinsert(struct visorchannel *channel, u32 queue, void *msg); +bool visorchannel_signalempty(struct visorchannel *channel, u32 queue); + int visorchannel_signalqueue_slots_avail(struct visorchannel *channel, u32 queue); int visorchannel_signalqueue_max_slots(struct visorchannel *channel, u32 queue); |