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serial: 8250_mid: enable MSI on Denverton

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Enable MSI type of interrupt if PCI BIOS supports it.

Reviewed-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2017-01-11 16:31:36 +02:00 committed by Greg Kroah-Hartman
parent 4831e0d905
commit 6d59225f2d
1 changed files with 7 additions and 1 deletions
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8
drivers/tty/serial/8250/8250_mid.c
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@ -164,8 +164,14 @@ static int dnv_setup(struct mid8250 *mid, struct uart_port *p)
unsigned int bar = FL_GET_BASE(mid->board->flags); unsigned int bar = FL_GET_BASE(mid->board->flags);
int ret; int ret;
ret = pci_alloc_irq_vectors(pdev, 1, 1, PCI_IRQ_ALL_TYPES);
if (ret < 0)
return ret;
p->irq = pci_irq_vector(pdev, 0);
chip->dev = &pdev->dev; chip->dev = &pdev->dev;
chip->irq = pdev->irq; chip->irq = pci_irq_vector(pdev, 0);
chip->regs = p->membase; chip->regs = p->membase;
chip->length = pci_resource_len(pdev, bar); chip->length = pci_resource_len(pdev, bar);
chip->offset = DNV_DMA_CHAN_OFFSET; chip->offset = DNV_DMA_CHAN_OFFSET;