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| author | Ioana Ciornei <ioana.ciornei@nxp.com> | 2018-12-10 19:50:19 +0300 |
|---|---|---|
| committer | Li Yang <leoyang.li@nxp.com> | 2019-01-12 00:06:54 +0300 |
| commit | afb77422819ff60612e9b7d36461b9b2bc8e038e (patch) | |
| tree | a9976bca434fae99f9064cb9b745990f117d2365 /drivers/bus/fsl-mc/fsl-mc-allocator.c | |
| parent | 47441f7f73b7cf0c2d6e7d6372f026ea81193fd6 (diff) | |
| download | linux-afb77422819ff60612e9b7d36461b9b2bc8e038e.tar.xz | |
bus: fsl-mc: automatically add a device_link on fsl_mc_[portal,object]_allocate
Allocatable devices can be acquired by drivers on the fsl-mc bus using
the fsl_mc_portal_allocate or fsl_mc_object_allocate functions. Add a
device link between the consumer device and the supplier device so that
proper resource management is achieved.
Also, adding a link between these devices ensures that a proper unbind
order is respected (ie before the supplier device is unbound from its
respective driver all consumer devices will be notified and unbound
first).
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Signed-off-by: Li Yang <leoyang.li@nxp.com>
Diffstat (limited to 'drivers/bus/fsl-mc/fsl-mc-allocator.c')
| -rw-r--r-- | drivers/bus/fsl-mc/fsl-mc-allocator.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/bus/fsl-mc/fsl-mc-allocator.c b/drivers/bus/fsl-mc/fsl-mc-allocator.c index e906ecfe23dd..8ad77246f322 100644 --- a/drivers/bus/fsl-mc/fsl-mc-allocator.c +++ b/drivers/bus/fsl-mc/fsl-mc-allocator.c @@ -295,6 +295,14 @@ int __must_check fsl_mc_object_allocate(struct fsl_mc_device *mc_dev, if (!mc_adev) goto error; + mc_adev->consumer_link = device_link_add(&mc_dev->dev, + &mc_adev->dev, + DL_FLAG_AUTOREMOVE_CONSUMER); + if (!mc_adev->consumer_link) { + error = -EINVAL; + goto error; + } + *new_mc_adev = mc_adev; return 0; error: @@ -321,6 +329,9 @@ void fsl_mc_object_free(struct fsl_mc_device *mc_adev) return; fsl_mc_resource_free(resource); + + device_link_del(mc_adev->consumer_link); + mc_adev->consumer_link = NULL; } EXPORT_SYMBOL_GPL(fsl_mc_object_free); |