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| author | Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> | 2022-06-23 09:38:17 +0900 |
|---|---|---|
| committer | Lorenzo Pieralisi <lpieralisi@kernel.org> | 2022-10-27 15:02:29 +0200 |
| commit | 7711cbb4862aa00909a248f011ba3fa578bd1cf3 (patch) | |
| tree | 808b2fc90db0b79c5c85599c4e790583c4c9885c /drivers/pci | |
| parent | 9abf2313adc1ca1b6180c508c25f22f9395cc780 (diff) | |
| download | linux-7711cbb4862aa00909a248f011ba3fa578bd1cf3.tar.gz linux-7711cbb4862aa00909a248f011ba3fa578bd1cf3.tar.bz2 linux-7711cbb4862aa00909a248f011ba3fa578bd1cf3.zip | |
PCI: endpoint: Fix WARN() when an endpoint driver is removed
Since there is no release callback defined for the PCI EPC device,
the below warning is thrown by driver core when a PCI endpoint driver is
removed:
Device 'e65d0000.pcie-ep' does not have a release() function, it is broken and must be fixed. See Documentation/core-api/kobject.rst.
WARNING: CPU: 0 PID: 139 at drivers/base/core.c:2232 device_release+0x78/0x8c
Hence, add the release callback and also move the kfree(epc) from
pci_epc_destroy() so that the epc memory is freed when all references are
dropped.
Link: https://lore.kernel.org/r/20220623003817.298173-1-yoshihiro.shimoda.uh@renesas.com
Tested-by: Vidya Sagar <vidyas@nvidia.com>
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Signed-off-by: Lorenzo Pieralisi <lpieralisi@kernel.org>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/endpoint/pci-epc-core.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/pci/endpoint/pci-epc-core.c b/drivers/pci/endpoint/pci-epc-core.c index 3bc9273d0a08..2542196e8c3d 100644 --- a/drivers/pci/endpoint/pci-epc-core.c +++ b/drivers/pci/endpoint/pci-epc-core.c @@ -724,7 +724,6 @@ void pci_epc_destroy(struct pci_epc *epc) { pci_ep_cfs_remove_epc_group(epc->group); device_unregister(&epc->dev); - kfree(epc); } EXPORT_SYMBOL_GPL(pci_epc_destroy); @@ -746,6 +745,11 @@ void devm_pci_epc_destroy(struct device *dev, struct pci_epc *epc) } EXPORT_SYMBOL_GPL(devm_pci_epc_destroy); +static void pci_epc_release(struct device *dev) +{ + kfree(to_pci_epc(dev)); +} + /** * __pci_epc_create() - create a new endpoint controller (EPC) device * @dev: device that is creating the new EPC @@ -779,6 +783,7 @@ __pci_epc_create(struct device *dev, const struct pci_epc_ops *ops, device_initialize(&epc->dev); epc->dev.class = pci_epc_class; epc->dev.parent = dev; + epc->dev.release = pci_epc_release; epc->ops = ops; ret = dev_set_name(&epc->dev, "%s", dev_name(dev)); |