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[media] cobalt: use pci_irq_allocate_vectors() 

Simplify the interrupt setup by using the new PCI layer helpers.

Despite using pci_enable_msi_range(), this driver was only requesting a
single MSI vector anyway.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
This commit is contained in:
Christoph Hellwig 2017-01-09 21:37:38 +01:00 committed by Bjorn Helgaas
parent dadf17334f
commit e8e8dd6d20
2 changed files with 2 additions and 8 deletions
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8
drivers/media/pci/cobalt/cobalt-driver.c
View File

@ -308,9 +308,7 @@ static void cobalt_pci_iounmap(struct cobalt *cobalt, struct pci_dev *pci_dev)
static void cobalt_free_msi(struct cobalt *cobalt, struct pci_dev *pci_dev)
{
free_irq(pci_dev->irq, (void *)cobalt);
if (cobalt->msi_enabled)
pci_disable_msi(pci_dev);
pci_free_irq_vectors(pci_dev);
}
static int cobalt_setup_pci(struct cobalt *cobalt, struct pci_dev *pci_dev,
@ -387,14 +385,12 @@ static int cobalt_setup_pci(struct cobalt *cobalt, struct pci_dev *pci_dev,
from being generated. */
cobalt_set_interrupt(cobalt, false);
if (pci_enable_msi_range(pci_dev, 1, 1) < 1) {
if (pci_alloc_irq_vectors(pci_dev, 1, 1, PCI_IRQ_MSI) < 1) {
cobalt_err("Could not enable MSI\n");
cobalt->msi_enabled = false;
ret = -EIO;
goto err_release;
}
msi_config_show(cobalt, pci_dev);
cobalt->msi_enabled = true;
/* Register IRQ */
if (request_irq(pci_dev->irq, cobalt_irq_handler, IRQF_SHARED,

2
drivers/media/pci/cobalt/cobalt-driver.h
View File

@ -287,8 +287,6 @@ struct cobalt {
u32 irq_none;
u32 irq_full_fifo;
bool msi_enabled;
/* omnitek dma */
int dma_channels;
int first_fifo_channel;