In m_can_pci_remove() and error handling path of m_can_pci_probe(),
m_can_class_free_dev() should be called to free resource allocated by
m_can_class_allocate_dev(), otherwise there will be memleak.
Fixes: cab7ffc0324f ("can: m_can: add PCI glue driver for Intel Elkhart Lake")
Signed-off-by: Zhang Changzhong <zhangchangzhong@xxxxxxxxxx>
---
drivers/net/can/m_can/m_can_pci.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/net/can/m_can/m_can_pci.c b/drivers/net/can/m_can/m_can_pci.c
index 8f184a8..f2219aa 100644
--- a/drivers/net/can/m_can/m_can_pci.c
+++ b/drivers/net/can/m_can/m_can_pci.c
@@ -120,7 +120,7 @@ static int m_can_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
ret = pci_alloc_irq_vectors(pci, 1, 1, PCI_IRQ_ALL_TYPES);
if (ret < 0)
- return ret;
+ goto err_free_dev;
mcan_class->dev = &pci->dev;
mcan_class->net->irq = pci_irq_vector(pci, 0);
@@ -132,7 +132,7 @@ static int m_can_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
ret = m_can_class_register(mcan_class);
if (ret)
- goto err;
+ goto err_free_irq;
/* Enable interrupt control at CAN wrapper IP */
writel(0x1, base + CTL_CSR_INT_CTL_OFFSET);
@@ -144,8 +144,10 @@ static int m_can_pci_probe(struct pci_dev *pci, const struct pci_device_id *id)
return 0;
-err:
+err_free_irq:
pci_free_irq_vectors(pci);
+err_free_dev:
+ m_can_class_free_dev(mcan_class->net);
return ret;
}
@@ -161,6 +163,7 @@ static void m_can_pci_remove(struct pci_dev *pci)
writel(0x0, priv->base + CTL_CSR_INT_CTL_OFFSET);
m_can_class_unregister(mcan_class);
+ m_can_class_free_dev(mcan_class->net);
pci_free_irq_vectors(pci);
}
--
2.9.5
