diff options
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/platform.c | 29 |
1 files changed, 27 insertions, 2 deletions
diff --git a/drivers/of/platform.c b/drivers/of/platform.c index ea87a3cf786..5cc9a8e91be 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -475,10 +475,35 @@ struct of_device *of_device_alloc(struct device_node *np, struct device *parent) { struct of_device *dev; - - dev = kzalloc(sizeof(*dev), GFP_KERNEL); + int rc, i, num_reg = 0, num_irq = 0; + struct resource *res, temp_res; + + /* First count how many resources are needed */ + while (of_address_to_resource(np, num_reg, &temp_res) == 0) + num_reg++; + while (of_irq_to_resource(np, num_irq, &temp_res) != NO_IRQ) + num_irq++; + + /* Allocate memory for both the struct device and the resource table */ + dev = kzalloc(sizeof(*dev) + (sizeof(*res) * (num_reg + num_irq)), + GFP_KERNEL); if (!dev) return NULL; + res = (struct resource *) &dev[1]; + + /* Populate the resource table */ + if (num_irq || num_reg) { + dev->num_resources = num_reg + num_irq; + dev->resource = res; + for (i = 0; i < num_reg; i++, res++) { + rc = of_address_to_resource(np, i, res); + WARN_ON(rc); + } + for (i = 0; i < num_irq; i++, res++) { + rc = of_irq_to_resource(np, i, res); + WARN_ON(rc == NO_IRQ); + } + } dev->dev.of_node = of_node_get(np); dev->dev.dma_mask = &dev->archdata.dma_mask; |