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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-27 13:13:43 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-27 13:13:43 +0300 |
| commit | 53c2f13c1ee59c8889bf23ef58653677e3ec1644 (patch) | |
| tree | 8a34720bf4bc2329d2ff328318cb78ea474f0d41 /drivers/bus/fsl-mc/mc-io.c | |
| parent | 3394ade23d7e3934a166e973e664046ea6f559d4 (diff) | |
| parent | e60eb441596d1c70e4a264d2bac726c6cd2da067 (diff) | |
| download | linux-rolling-stable.tar.xz | |
Merge v6.15.4linux-rolling-stable
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/bus/fsl-mc/mc-io.c')
| -rw-r--r-- | drivers/bus/fsl-mc/mc-io.c | 19 |
1 files changed, 13 insertions, 6 deletions
diff --git a/drivers/bus/fsl-mc/mc-io.c b/drivers/bus/fsl-mc/mc-io.c index a0ad7866cbfc..cd8754763f40 100644 --- a/drivers/bus/fsl-mc/mc-io.c +++ b/drivers/bus/fsl-mc/mc-io.c @@ -214,12 +214,19 @@ int __must_check fsl_mc_portal_allocate(struct fsl_mc_device *mc_dev, if (error < 0) goto error_cleanup_resource; - dpmcp_dev->consumer_link = device_link_add(&mc_dev->dev, - &dpmcp_dev->dev, - DL_FLAG_AUTOREMOVE_CONSUMER); - if (!dpmcp_dev->consumer_link) { - error = -EINVAL; - goto error_cleanup_mc_io; + /* If the DPRC device itself tries to allocate a portal (usually for + * UAPI interaction), don't add a device link between them since the + * DPMCP device is an actual child device of the DPRC and a reverse + * dependency is not allowed. + */ + if (mc_dev != mc_bus_dev) { + dpmcp_dev->consumer_link = device_link_add(&mc_dev->dev, + &dpmcp_dev->dev, + DL_FLAG_AUTOREMOVE_CONSUMER); + if (!dpmcp_dev->consumer_link) { + error = -EINVAL; + goto error_cleanup_mc_io; + } } *new_mc_io = mc_io; |