diff options
Diffstat (limited to 'target/linux/mvebu/patches-3.10/0074-irqchip-armada-370-xp-properly-request-resources.patch')
| -rw-r--r-- | target/linux/mvebu/patches-3.10/0074-irqchip-armada-370-xp-properly-request-resources.patch | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/target/linux/mvebu/patches-3.10/0074-irqchip-armada-370-xp-properly-request-resources.patch b/target/linux/mvebu/patches-3.10/0074-irqchip-armada-370-xp-properly-request-resources.patch new file mode 100644 index 0000000000..1cb99118c9 --- /dev/null +++ b/target/linux/mvebu/patches-3.10/0074-irqchip-armada-370-xp-properly-request-resources.patch @@ -0,0 +1,64 @@ +From c8efa45217cbd780dafe12d87b61554c2e19a010 Mon Sep 17 00:00:00 2001 +From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> +Date: Thu, 6 Jun 2013 18:22:51 +0200 +Subject: [PATCH 074/203] 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 <thomas.petazzoni@free-electrons.com> +Tested-by: Daniel Price <daniel.price@gmail.com> +Acked-by: Gregory CLEMENT <gregory.clement@free-electrons.com> +--- + drivers/irqchip/irq-armada-370-xp.c | 20 ++++++++++++++++---- + 1 file changed, 16 insertions(+), 4 deletions(-) + +--- 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 + 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_ + 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); + |