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x86/pci/intel_mid_pci: Propagate actual return code 

mp_map_gsi_to_irq() returns different codes if it fails.
intel_mid_pci_irq_enable() hides this under -EBUSY.

Return the actual failure code.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Link: http://lkml.kernel.org/r/1438161409-4671-3-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Andy Shevchenko 2015-07-29 12:16:48 +03:00 committed by Thomas Gleixner
parent 39d9b77b8d
commit 2a61c8eaf1
1 changed files with 4 additions and 2 deletions
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6
arch/x86/pci/intel_mid_pci.c
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@ -213,6 +213,7 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev)
{
struct irq_alloc_info info;
int polarity;
int ret;
if (dev->irq_managed && dev->irq > 0)
return 0;
@ -244,8 +245,9 @@ static int intel_mid_pci_irq_enable(struct pci_dev *dev)
* MRST only have IOAPIC, the PCI irq lines are 1:1 mapped to
* IOAPIC RTE entries, so we just enable RTE for the device.
*/
if (mp_map_gsi_to_irq(dev->irq, IOAPIC_MAP_ALLOC, &info) < 0)
return -EBUSY;
ret = mp_map_gsi_to_irq(dev->irq, IOAPIC_MAP_ALLOC, &info);
if (ret < 0)
return ret;
dev->irq_managed = 1;