[PATCH v7 3/4] i2c: designware: Use pcim_alloc_irq_vectors() to allocate IRQ vectors

Dejin Zheng
2021-06-07T15:40:38Z

The pcim_alloc_irq_vectors() function, an explicit device-managed version
of pci_alloc_irq_vectors(). If pcim_enable_device() has been called
before, then pci_alloc_irq_vectors() is actually a device-managed
function. It is used here as a device-managed function, So replace it
with pcim_alloc_irq_vectors(). At the same time, Remove the
pci_free_irq_vectors() function to simplify the error handling path.
the freeing resources will take automatically when device is gone.

Reviewed-by: Robert Richter <rric@kernel.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
---
v6 -> v7:
- rebase to PCI next branch
v5 -> v6:
- rebase to 5.13-rc4
v4 -> v5:
- Modify the subject name.
v3 -> v4:
- add some commit comments.
v2 -> v3:
- simplify the error handling path.
v1 -> v2:
- Modify some commit messages.

drivers/i2c/busses/i2c-designware-pcidrv.c | 15 ++++-----------
1 file changed, 4 insertions(+), 11 deletions(-)

diff --git a/drivers/i2c/busses/i2c-designware-pcidrv.c b/drivers/i2c/busses/i2c-designware-pcidrv.c
index 0f409a4c2da0..2b1ef0934445 100644
--- a/drivers/i2c/busses/i2c-designware-pcidrv.c
+++ b/drivers/i2c/busses/i2c-designware-pcidrv.c
@@ -268,7 +268,7 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
if (!dev)
return -ENOMEM;

- r = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
+ r = pcim_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
if (r < 0)
return r;

@@ -283,10 +283,8 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,

if (controller->setup) {
r = controller->setup(pdev, controller);
- if (r) {
- pci_free_irq_vectors(pdev);
+ if (r)
return r;
- }
}

i2c_dw_adjust_bus_speed(dev);
@@ -295,10 +293,8 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
i2c_dw_acpi_configure(&pdev->dev);

r = i2c_dw_validate_speed(dev);
- if (r) {
- pci_free_irq_vectors(pdev);
+ if (r)
return r;
- }

i2c_dw_configure(dev);

@@ -318,10 +314,8 @@ static int i2c_dw_pci_probe(struct pci_dev *pdev,
adap->nr = controller->bus_num;

r = i2c_dw_probe(dev);
- if (r) {
- pci_free_irq_vectors(pdev);
+ if (r)
return r;
- }

if ((dev->flags & MODEL_MASK) == MODEL_AMD_NAVI_GPU) {
r = navi_amd_register_client(dev);
@@ -349,7 +343,6 @@ static void i2c_dw_pci_remove(struct pci_dev *pdev)

i2c_del_adapter(&dev->adapter);
devm_free_irq(&pdev->dev, dev->irq, dev);
- pci_free_irq_vectors(pdev);
}

/* work with hotplug and coldplug */
--
2.30.1