From: Thomas Petazzoni Date: Fri, 9 Aug 2013 20:27:10 +0000 (+0200) Subject: irqchip: armada-370-xp: properly request resources X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=627dfcc249e2eae07982272808ad560592e730e0;p=linux-beck.git irqchip: armada-370-xp: properly request resources Instead of using of_iomap(), we now use of_address_to_resource(), request_mem_region() and ioremap(). This allows the corresponding I/O regions to be properly requested and visible in /proc/iomem. The main motivation for this change is that the introduction of the MSI support requires us to get the physical address of the main interrupt controller registers, so we will need the corresponding 'struct resource' anyway. We also take this opportunity to change a panic() to BUG_ON(), in order to be consistent with the rest of the driver. Signed-off-by: Thomas Petazzoni Tested-by: Daniel Price Acked-by: Gregory CLEMENT Signed-off-by: Jason Cooper --- diff --git a/drivers/irqchip/irq-armada-370-xp.c b/drivers/irqchip/irq-armada-370-xp.c index bb328a366122..26adc741f764 100644 --- a/drivers/irqchip/irq-armada-370-xp.c +++ b/drivers/irqchip/irq-armada-370-xp.c @@ -248,12 +248,25 @@ armada_370_xp_handle_irq(struct pt_regs *regs) static int __init armada_370_xp_mpic_of_init(struct device_node *node, struct device_node *parent) { + struct resource main_int_res, per_cpu_int_res; u32 control; - main_int_base = of_iomap(node, 0); - per_cpu_int_base = of_iomap(node, 1); + BUG_ON(of_address_to_resource(node, 0, &main_int_res)); + BUG_ON(of_address_to_resource(node, 1, &per_cpu_int_res)); + BUG_ON(!request_mem_region(main_int_res.start, + resource_size(&main_int_res), + node->full_name)); + BUG_ON(!request_mem_region(per_cpu_int_res.start, + resource_size(&per_cpu_int_res), + node->full_name)); + + main_int_base = ioremap(main_int_res.start, + resource_size(&main_int_res)); BUG_ON(!main_int_base); + + per_cpu_int_base = ioremap(per_cpu_int_res.start, + resource_size(&per_cpu_int_res)); BUG_ON(!per_cpu_int_base); control = readl(main_int_base + ARMADA_370_XP_INT_CONTROL); @@ -262,8 +275,7 @@ static int __init armada_370_xp_mpic_of_init(struct device_node *node, irq_domain_add_linear(node, (control >> 2) & 0x3ff, &armada_370_xp_mpic_irq_ops, NULL); - if (!armada_370_xp_mpic_domain) - panic("Unable to add Armada_370_Xp MPIC irq domain (DT)\n"); + BUG_ON(!armada_370_xp_mpic_domain); irq_set_default_host(armada_370_xp_mpic_domain);