Merge tag 'dt-for-linus' of git://git.secretlab.ca/git/linux

Pull devicetree bug fixes from Grant Likely:
 "These are some important bug fixes that need to get into v3.15.

  This branch contains a pair of important bug fixes for the DT code:

   - Fix some incorrect binding property names before they enter common
     usage

   - Fix bug where some platform devices will be unable to get their
     interrupt number when they depend on an interrupt controller that
     is not available at device creation time.  This is a problem
     causing mainline to fail on a number of ARM platforms"

* tag 'dt-for-linus' of git://git.secretlab.ca/git/linux:
  of/irq: do irq resolution in platform_get_irq
  of: selftest: add deferred probe interrupt test
  dt: Fix binding typos in clock-names and interrupt-names

14 files changed, 105 insertions, 22 deletions

diff --git a/Documentation/devicetree/bindings/net/socfpga-dwmac.txt b/Documentation/devicetree/bindings/net/socfpga-dwmac.txt
index 636f0ac4e223..2a60cd3e8d5d 100644
--- a/Documentation/devicetree/bindings/net/socfpga-dwmac.txt
+++ b/Documentation/devicetree/bindings/net/socfpga-dwmac.txt
@@ -23,5 +23,5 @@ gmac0: ethernet@ff700000 {
         interrupt-names = "macirq";
         mac-address = [00 00 00 00 00 00];/* Filled in by U-Boot */
         clocks = <&emac_0_clk>;
-        clocks-names = "stmmaceth";
+        clock-names = "stmmaceth";
 };
diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt
index 80c1fb8bfbb8..a2acd2b26baf 100644
--- a/Documentation/devicetree/bindings/net/stmmac.txt
+++ b/Documentation/devicetree/bindings/net/stmmac.txt
@@ -33,7 +33,7 @@ Optional properties:
 - max-frame-size: See ethernet.txt file in the same directory
 - clocks: If present, the first clock should be the GMAC main clock,
   further clocks may be specified in derived bindings.
-- clocks-names: One name for each entry in the clocks property, the
+- clock-names: One name for each entry in the clocks property, the
   first one should be "stmmaceth".
 
 Examples:
diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-st.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-st.txt
index 4bd5be0e5e7d..26bcb18f4e60 100644
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-st.txt
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-st.txt
@@ -83,7 +83,7 @@ Example:
                 reg             = <0xfe61f080 0x4>;
                 reg-names       = "irqmux";
                 interrupts      = <GIC_SPI 180 IRQ_TYPE_LEVEL_HIGH>;
-                interrupts-names = "irqmux";
+                interrupt-names = "irqmux";
                 ranges          = <0 0xfe610000 0x5000>;
 
                 PIO0: gpio@fe610000 {
@@ -165,7 +165,7 @@ sdhci0:sdhci@fe810000{
         interrupt-parent = <&PIO3>;
         #interrupt-cells = <2>;
         interrupts = <3 IRQ_TYPE_LEVEL_HIGH>; /* Interrupt line via PIO3-3 */
-        interrupts-names = "card-detect";
+        interrupt-names = "card-detect";
         pinctrl-names = "default";
         pinctrl-0       = <&pinctrl_mmc>;
 };
diff --git a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
index 569b26c4a81e..60ca07996458 100644
--- a/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
+++ b/Documentation/devicetree/bindings/sound/davinci-mcasp-audio.txt
@@ -47,7 +47,7 @@ mcasp0: mcasp0@1d00000 {
         reg = <0x100000 0x3000>;
         reg-names "mpu";
         interrupts = <82>, <83>;
-        interrupts-names = "tx", "rx";
+        interrupt-names = "tx", "rx";
         op-mode = <0>;          /* MCASP_IIS_MODE */
         tdm-slots = <2>;
         serial-dir = <
diff --git a/arch/arm/boot/dts/am33xx.dtsi b/arch/arm/boot/dts/am33xx.dtsi
index 07f283c20eb1..cb6811e5ae5a 100644
--- a/arch/arm/boot/dts/am33xx.dtsi
+++ b/arch/arm/boot/dts/am33xx.dtsi
@@ -802,7 +802,7 @@
                               <0x46000000 0x400000>;
                         reg-names = "mpu", "dat";
                         interrupts = <80>, <81>;
-                        interrupts-names = "tx", "rx";
+                        interrupt-names = "tx", "rx";
                         status = "disabled";
                         dmas = <&edma 8>,
                                 <&edma 9>;
@@ -816,7 +816,7 @@
                               <0x46400000 0x400000>;
                         reg-names = "mpu", "dat";
                         interrupts = <82>, <83>;
-                        interrupts-names = "tx", "rx";
+                        interrupt-names = "tx", "rx";
                         status = "disabled";
                         dmas = <&edma 10>,
                                 <&edma 11>;
diff --git a/arch/arm/boot/dts/am4372.dtsi b/arch/arm/boot/dts/am4372.dtsi
index 36d523a26831..d1f8707ff1df 100644
--- a/arch/arm/boot/dts/am4372.dtsi
+++ b/arch/arm/boot/dts/am4372.dtsi
@@ -691,7 +691,7 @@
                               <0x46000000 0x400000>;
                         reg-names = "mpu", "dat";
                         interrupts = <80>, <81>;
-                        interrupts-names = "tx", "rx";
+                        interrupt-names = "tx", "rx";
                         status = "disabled";
                         dmas = <&edma 8>,
                                <&edma 9>;
@@ -705,7 +705,7 @@
                               <0x46400000 0x400000>;
                         reg-names = "mpu", "dat";
                         interrupts = <82>, <83>;
-                        interrupts-names = "tx", "rx";
+                        interrupt-names = "tx", "rx";
                         status = "disabled";
                         dmas = <&edma 10>,
                                <&edma 11>;
diff --git a/arch/arm/boot/dts/stih415-pinctrl.dtsi b/arch/arm/boot/dts/stih415-pinctrl.dtsi
index f09fb10a3791..81df870e5ee6 100644
--- a/arch/arm/boot/dts/stih415-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stih415-pinctrl.dtsi
@@ -49,7 +49,7 @@
                         reg             = <0xfe61f080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 180 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges          = <0 0xfe610000 0x5000>;
 
                         PIO0: gpio@fe610000 {
@@ -187,7 +187,7 @@
                         reg             = <0xfee0f080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 181 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges          = <0 0xfee00000 0x8000>;
 
                         PIO5: gpio@fee00000 {
@@ -282,7 +282,7 @@
                         reg             = <0xfe82f080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 182 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges          = <0 0xfe820000 0x8000>;
 
                         PIO13: gpio@fe820000 {
@@ -423,7 +423,7 @@
                         reg             = <0xfd6bf080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges          = <0 0xfd6b0000 0x3000>;
 
                         PIO100: gpio@fd6b0000 {
@@ -460,7 +460,7 @@
                         reg             = <0xfd33f080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges          = <0 0xfd330000 0x5000>;
 
                         PIO103: gpio@fd330000 {
diff --git a/arch/arm/boot/dts/stih416-pinctrl.dtsi b/arch/arm/boot/dts/stih416-pinctrl.dtsi
index aeea304086eb..250d5ecc951e 100644
--- a/arch/arm/boot/dts/stih416-pinctrl.dtsi
+++ b/arch/arm/boot/dts/stih416-pinctrl.dtsi
@@ -53,7 +53,7 @@
                         reg             = <0xfe61f080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 182 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges          = <0 0xfe610000 0x6000>;
 
                         PIO0: gpio@fe610000 {
@@ -201,7 +201,7 @@
                         reg             = <0xfee0f080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 183 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges          = <0 0xfee00000 0x10000>;
 
                         PIO5: gpio@fee00000 {
@@ -333,7 +333,7 @@
                         reg             = <0xfe82f080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges          = <0 0xfe820000 0x6000>;
 
                         PIO13: gpio@fe820000 {
@@ -461,7 +461,7 @@
                         reg             = <0xfd6bf080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 113 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges          = <0 0xfd6b0000 0x3000>;
 
                         PIO100: gpio@fd6b0000 {
@@ -498,7 +498,7 @@
                         reg             = <0xfd33f080 0x4>;
                         reg-names       = "irqmux";
                         interrupts      = <GIC_SPI 114 IRQ_TYPE_LEVEL_HIGH>;
-                        interrupts-names = "irqmux";
+                        interrupt-names = "irqmux";
                         ranges                  = <0 0xfd330000 0x5000>;
 
                         PIO103: gpio@fd330000 {
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index e714709704e4..5b47210889e0 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -13,6 +13,7 @@
 #include <linux/string.h>
 #include <linux/platform_device.h>
 #include <linux/of_device.h>
+#include <linux/of_irq.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/dma-mapping.h>
@@ -87,7 +88,11 @@ int platform_get_irq(struct platform_device *dev, unsigned int num)
                 return -ENXIO;
         return dev->archdata.irqs[num];
 #else
-        struct resource *r = platform_get_resource(dev, IORESOURCE_IRQ, num);
+        struct resource *r;
+        if (IS_ENABLED(CONFIG_OF_IRQ) && dev->dev.of_node)
+                return of_irq_get(dev->dev.of_node, num);
+
+        r = platform_get_resource(dev, IORESOURCE_IRQ, num);
 
         return r ? r->start : -ENXIO;
 #endif
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 9bcf2cf19357..5aeb89411350 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -364,7 +364,7 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
 
                 memset(r, 0, sizeof(*r));
                 /*
-                 * Get optional "interrupts-names" property to add a name
+                 * Get optional "interrupt-names" property to add a name
                  * to the resource.
                  */
                 of_property_read_string_index(dev, "interrupt-names", index,
@@ -380,6 +380,32 @@ int of_irq_to_resource(struct device_node *dev, int index, struct resource *r)
 EXPORT_SYMBOL_GPL(of_irq_to_resource);
 
 /**
+ * of_irq_get - Decode a node's IRQ and return it as a Linux irq number
+ * @dev: pointer to device tree node
+ * @index: zero-based index of the irq
+ *
+ * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain
+ * is not yet created.
+ *
+ */
+int of_irq_get(struct device_node *dev, int index)
+{
+        int rc;
+        struct of_phandle_args oirq;
+        struct irq_domain *domain;
+
+        rc = of_irq_parse_one(dev, index, &oirq);
+        if (rc)
+                return rc;
+
+        domain = irq_find_host(oirq.np);
+        if (!domain)
+                return -EPROBE_DEFER;
+
+        return irq_create_of_mapping(&oirq);
+}
+
+/**
  * of_irq_count - Count the number of IRQs a node uses
  * @dev: pointer to device tree node
  */
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 404d1daebefa..bd47fbc53dc9 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -168,7 +168,9 @@ struct platform_device *of_device_alloc(struct device_node *np,
                         rc = of_address_to_resource(np, i, res);
                         WARN_ON(rc);
                 }
-                WARN_ON(of_irq_to_resource_table(np, res, num_irq) != num_irq);
+                if (of_irq_to_resource_table(np, res, num_irq) != num_irq)
+                        pr_debug("not all legacy IRQ resources mapped for %s\n",
+                                 np->name);
         }
 
         dev->dev.of_node = of_node_get(np);
diff --git a/drivers/of/selftest.c b/drivers/of/selftest.c
index ae4450070503..fe70b86bcffb 100644
--- a/drivers/of/selftest.c
+++ b/drivers/of/selftest.c
@@ -10,6 +10,7 @@
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/of_irq.h>
+#include <linux/of_platform.h>
 #include <linux/list.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
@@ -427,6 +428,36 @@ static void __init of_selftest_match_node(void)
         }
 }
 
+static void __init of_selftest_platform_populate(void)
+{
+        int irq;
+        struct device_node *np;
+        struct platform_device *pdev;
+
+        np = of_find_node_by_path("/testcase-data");
+        of_platform_populate(np, of_default_bus_match_table, NULL, NULL);
+
+        /* Test that a missing irq domain returns -EPROBE_DEFER */
+        np = of_find_node_by_path("/testcase-data/testcase-device1");
+        pdev = of_find_device_by_node(np);
+        if (!pdev)
+                selftest(0, "device 1 creation failed\n");
+        irq = platform_get_irq(pdev, 0);
+        if (irq != -EPROBE_DEFER)
+                selftest(0, "device deferred probe failed - %d\n", irq);
+
+        /* Test that a parsing failure does not return -EPROBE_DEFER */
+        np = of_find_node_by_path("/testcase-data/testcase-device2");
+        pdev = of_find_device_by_node(np);
+        if (!pdev)
+                selftest(0, "device 2 creation failed\n");
+        irq = platform_get_irq(pdev, 0);
+        if (irq >= 0 || irq == -EPROBE_DEFER)
+                selftest(0, "device parsing error failed - %d\n", irq);
+
+        selftest(1, "passed");
+}
+
 static int __init of_selftest(void)
 {
         struct device_node *np;
@@ -445,6 +476,7 @@ static int __init of_selftest(void)
         of_selftest_parse_interrupts();
         of_selftest_parse_interrupts_extended();
         of_selftest_match_node();
+        of_selftest_platform_populate();
         pr_info("end of selftest - %i passed, %i failed\n",
                 selftest_results.passed, selftest_results.failed);
         return 0;
diff --git a/drivers/of/testcase-data/tests-interrupts.dtsi b/drivers/of/testcase-data/tests-interrupts.dtsi
index c843720bd3e5..da4695f60351 100644
--- a/drivers/of/testcase-data/tests-interrupts.dtsi
+++ b/drivers/of/testcase-data/tests-interrupts.dtsi
@@ -54,5 +54,18 @@
                                                       <&test_intmap1 1 2>;
                         };
                 };
+
+                testcase-device1 {
+                        compatible = "testcase-device";
+                        interrupt-parent = <&test_intc0>;
+                        interrupts = <1>;
+                };
+
+                testcase-device2 {
+                        compatible = "testcase-device";
+                        interrupt-parent = <&test_intc2>;
+                        interrupts = <1>; /* invalid specifier - too short */
+                };
         };
+
 };
diff --git a/include/linux/of_irq.h b/include/linux/of_irq.h
index 3f23b4472c31..6404253d810d 100644
--- a/include/linux/of_irq.h
+++ b/include/linux/of_irq.h
@@ -44,11 +44,16 @@ extern void of_irq_init(const struct of_device_id *matches);
 
 #ifdef CONFIG_OF_IRQ
 extern int of_irq_count(struct device_node *dev);
+extern int of_irq_get(struct device_node *dev, int index);
 #else
 static inline int of_irq_count(struct device_node *dev)
 {
         return 0;
 }
+static inline int of_irq_get(struct device_node *dev, int index)
+{
+        return 0;
+}
 #endif
 
 #if defined(CONFIG_OF)