xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

of/irq: Create of_irq_parse_and_map_pci() to consolidate arch code.

Browse Source 
Several architectures open code effectively the same code block for
finding and mapping PCI irqs. This patch consolidates it down to a
single function.

Signed-off-by: Grant Likely <grant.likely@linaro.org>
Acked-by: Michal Simek <monstr@monstr.eu>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Grant Likely
2013-09-19 16:44:55 -05:00
parent f7578496a6
commit 16b84e5a50
7 changed files with 31 additions and 67 deletions
Download Patch File Download Diff File Expand all files Collapse all files

25
drivers/of/of_pci_irq.c
View File

@@ -94,3 +94,28 @@ int of_irq_parse_pci(const struct pci_dev *pdev, struct of_phandle_args *out_irq
return of_irq_parse_raw(laddr, out_irq);
}
EXPORT_SYMBOL_GPL(of_irq_parse_pci);
/**
* of_irq_parse_and_map_pci() - Decode a PCI irq from the device tree and map to a virq
* @dev: The pci device needing an irq
* @slot: PCI slot number; passed when used as map_irq callback. Unused
* @pin: PCI irq pin number; passed when used as map_irq callback. Unused
*
* @slot and @pin are unused, but included in the function so that this
* function can be used directly as the map_irq callback to pci_fixup_irqs().
*/
int of_irq_parse_and_map_pci(const struct pci_dev *dev, u8 slot, u8 pin)
{
struct of_phandle_args oirq;
int ret;
ret = of_irq_parse_pci(dev, &oirq);
if (ret) {
dev_err(&dev->dev, "of_irq_parse_pci() failed with rc=%d\n", ret);
return 0; /* Proper return code 0 == NO_IRQ */
}
return irq_create_of_mapping(&oirq);
}
EXPORT_SYMBOL_GPL(of_irq_parse_and_map_pci);