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authorMika Westerberg <mika.westerberg@linux.intel.com>2012-04-05 12:15:16 +0300
committerGrant Likely <grant.likely@secretlab.ca>2012-04-05 21:38:23 -0700
commitb3e35af2b0ea9ad1618e01f40a1ffee83333ef35 (patch)
tree1ccbeb72bab9f989076780a466f82ab4602ef90f /drivers/gpio
parent8302c7413814e26959f69d36a0dcc1f945573bc9 (diff)
gpio/langwell: allocate IRQ descriptors dynamically for SPARSE_IRQ
Since x86 is using SPARSE_IRQ by default nowadays it means that we need to allocate IRQ descriptors dynamically using irq_alloc_descs() otherwise the genirq code fails to convert our irq numbers to suitable descriptors. Signed-off-by: Mika Westerberg <mika.westerberg@linux.intel.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-langwell.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/gpio/gpio-langwell.c b/drivers/gpio/gpio-langwell.c
index 0bea41b8a226..bc15ae3d7cf2 100644
--- a/drivers/gpio/gpio-langwell.c
+++ b/drivers/gpio/gpio-langwell.c
@@ -306,6 +306,7 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
u32 irq_base;
u32 gpio_base;
int retval = 0;
+ int ngpio = id->driver_data;
retval = pci_enable_device(pdev);
if (retval)
@@ -344,8 +345,15 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
retval = -ENOMEM;
goto err3;
}
+
+ retval = irq_alloc_descs(-1, irq_base, ngpio, 0);
+ if (retval < 0) {
+ dev_err(&pdev->dev, "can't allocate IRQ descs\n");
+ goto err3;
+ }
+ lnw->irq_base = retval;
+
lnw->reg_base = base;
- lnw->irq_base = irq_base;
lnw->chip.label = dev_name(&pdev->dev);
lnw->chip.request = lnw_gpio_request;
lnw->chip.direction_input = lnw_gpio_direction_input;
@@ -354,14 +362,14 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
lnw->chip.set = lnw_gpio_set;
lnw->chip.to_irq = lnw_gpio_to_irq;
lnw->chip.base = gpio_base;
- lnw->chip.ngpio = id->driver_data;
+ lnw->chip.ngpio = ngpio;
lnw->chip.can_sleep = 0;
lnw->pdev = pdev;
pci_set_drvdata(pdev, lnw);
retval = gpiochip_add(&lnw->chip);
if (retval) {
dev_err(&pdev->dev, "langwell gpiochip_add error %d\n", retval);
- goto err3;
+ goto err4;
}
irq_set_handler_data(pdev->irq, lnw);
irq_set_chained_handler(pdev->irq, lnw_irq_handler);
@@ -378,6 +386,8 @@ static int __devinit lnw_gpio_probe(struct pci_dev *pdev,
return 0;
+err4:
+ irq_free_descs(lnw->irq_base, ngpio);
err3:
pci_release_regions(pdev);
err2: