diff options
| author | Kristofer Jonsson <kristofer.jonsson@arm.com> | 2023-01-23 13:05:36 +0100 |
|---|---|---|
| committer | Kristofer Jonsson <kristofer.jonsson@arm.com> | 2023-02-02 16:30:40 +0100 |
| commit | 074ef905e834cff238e708f2e673e100884218ba (patch) | |
| tree | a99762832b461441b0319e984b3ecdb908efe433 /kernel/ethosu_device.h | |
| parent | ec47704ab3fd50a9ef8339f33139ddae4caa00b6 (diff) | |
| download | ethos-u-linux-driver-stack-074ef905e834cff238e708f2e673e100884218ba.tar.gz | |
Create device for Ethos-U kernel driver
When the Ethos-U kernel driver is probed it creates a /dev/ethosu<nr>
device node, which user space use ioctl to communicate with. When
the driver is removed the Ethos-U resources must live on until all
open file handles have been closed.
The rpmsg device can be removed for a number of reasons, for example
if the firmware is stopped or the remoteproc driver is removed. To
allow the remove to complete without waiting for all file handles to
close, a new 'struct device' is created by the kernel driver. This
device will be used to memory allocations and will live on until the
last file handle has been closed.
Change-Id: I790d8219960f25fe64f58c11a865eb65c7b08974
Diffstat (limited to 'kernel/ethosu_device.h')
| -rw-r--r-- | kernel/ethosu_device.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/kernel/ethosu_device.h b/kernel/ethosu_device.h index d02f29d..d866514 100644 --- a/kernel/ethosu_device.h +++ b/kernel/ethosu_device.h @@ -42,11 +42,11 @@ * struct ethosu_device - Device structure */ struct ethosu_device { + struct device dev; struct rpmsg_device *rpdev; struct rpmsg_endpoint *ept; struct cdev cdev; struct class *class; - dev_t devt; struct ethosu_mailbox mailbox; }; |