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PCI: Convert Downstream Port Containment driver to use devm_* functions

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Use the device resource management (devm) interfaces so we don't need to
explicitly release resources on failure paths or when the driver is
removed.

Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Keith Busch <keith.busch@intel.com>
This commit is contained in:
Mika Westerberg 2016-06-06 16:06:07 +03:00 committed by Bjorn Helgaas
parent af8c34ce6a
commit 733f3d1339
1 changed files with 4 additions and 9 deletions
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13
drivers/pci/pcie/pcie-dpc.c
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@ -89,7 +89,7 @@ static int dpc_probe(struct pcie_device *dev)
int status;
u16 ctl, cap;
dpc = kzalloc(sizeof(*dpc), GFP_KERNEL);
dpc = devm_kzalloc(&dev->device, sizeof(*dpc), GFP_KERNEL);
if (!dpc)
return -ENOMEM;
@ -98,11 +98,12 @@ static int dpc_probe(struct pcie_device *dev)
INIT_WORK(&dpc->work, interrupt_event_handler);
set_service_data(dev, dpc);
status = request_irq(dev->irq, dpc_irq, IRQF_SHARED, "pcie-dpc", dpc);
status = devm_request_irq(&dev->device, dev->irq, dpc_irq, IRQF_SHARED,
"pcie-dpc", dpc);
if (status) {
dev_warn(&dev->device, "request IRQ%d failed: %d\n", dev->irq,
status);
goto out;
return status;
}
pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CAP, &cap);
@ -117,9 +118,6 @@ static int dpc_probe(struct pcie_device *dev)
FLAG(cap, PCI_EXP_DPC_CAP_SW_TRIGGER), (cap >> 8) & 0xf,
FLAG(cap, PCI_EXP_DPC_CAP_DL_ACTIVE));
return status;
out:
kfree(dpc);
return status;
}
static void dpc_remove(struct pcie_device *dev)
@ -131,9 +129,6 @@ static void dpc_remove(struct pcie_device *dev)
pci_read_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, &ctl);
ctl &= ~(PCI_EXP_DPC_CTL_EN_NONFATAL | PCI_EXP_DPC_CTL_INT_EN);
pci_write_config_word(pdev, dpc->cap_pos + PCI_EXP_DPC_CTL, ctl);
free_irq(dev->irq, dpc);
kfree(dpc);
}
static struct pcie_port_service_driver dpcdriver = {