diff options
Diffstat (limited to 'drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c')
| -rw-r--r-- | drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c index bb69c91c44b0..39d15f9f4a18 100644 --- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c +++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_core.c @@ -3213,11 +3213,28 @@ error_exit: return status; } -enum vchiq_status vchiq_queue_kernel_message(unsigned int handle, void *context, - size_t size) +int vchiq_queue_kernel_message(unsigned handle, void *data, unsigned size) { - return vchiq_queue_message(handle, memcpy_copy_callback, context, size); + enum vchiq_status status; + + while (1) { + status = vchiq_queue_message(handle, memcpy_copy_callback, + data, size); + + /* + * vchiq_queue_message() may return VCHIQ_RETRY, so we need to + * implement a retry mechanism since this function is supposed + * to block until queued + */ + if (status != VCHIQ_RETRY) + break; + + msleep(1); + } + + return status; } +EXPORT_SYMBOL(vchiq_queue_kernel_message); void vchiq_release_message(unsigned int handle, |