summaryrefslogtreecommitdiff
path: root/drivers/of/irq.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2017-09-08 00:43:33 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-08 00:43:33 +0300
commit74fee4e88fd196c712abfdae89acfa272abf10f8 (patch)
tree942a2668830b36f5cf9bc9f2c77948f8b04c2742 /drivers/of/irq.c
parent7d955656121f547ff9a708ed7ee4c86a08bf628a (diff)
parent84024468cf1612783e6ab317da5b72fa41487ac6 (diff)
downloadlinux-74fee4e88fd196c712abfdae89acfa272abf10f8.tar.xz
Merge tag 'devicetree-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull DeviceTree updates from Rob Herring: "There's a few orphans in the conversion to %pOF printf specifiers included here that no one else picked up. Summary: - Convert more DT code to use of_property_read_* API. - Improve DT overlay support when adding multiple overlays - Convert printk's to %pOF format specifiers. Most went via subsystem trees, but picked up the remaining orphans - Correct unittests to use preferred "okay" for "status" property value - Add a KASLR seed property - Vendor prefixes for Mellanox, Theobroma System, Adaptrum, Moxa - Fix modalias buffer handling - Clean-up of include paths for building dtbs - Add bindings for amc6821, isl1208, tsl2x7x, srf02, and srf10 devices - Add nvmem bindings for MediaTek MT7623 and MT7622 SoC - Add compatible string for Allwinner H5 Mali-450 GPU - Fix links to old OpenFirmware docs with new mirror on devicetree.org - Remove status property from binding doc examples" * tag 'devicetree-for-4.14' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (45 commits) devicetree: Adjust status "ok" -> "okay" under drivers/of/ dt-bindings: Remove "status" from examples dt-bindings: pinctrl: sh-pfc: Use generic node name dt-bindings: Add vendor Mellanox dt-binding: net/phy: fix interrupts description virt: Convert to using %pOF instead of full_name macintosh: Convert to using %pOF instead of full_name ide: pmac: Convert to using %pOF instead of full_name microblaze: Convert to using %pOF instead of full_name dt-bindings: usb: musb: Grammar s/the/to/, s/is/are/ of: Use PLATFORM_DEVID_NONE definition of/device: Fix of_device_get_modalias() buffer handling of/device: Prevent buffer overflow in of_device_modalias() dt-bindings: add amc6821, isl1208 trivial bindings dt-bindings: add vendor prefix for Theobroma Systems of: search scripts/dtc/include-prefixes path for both CPP and DTC of: remove arch/$(SRCARCH)/boot/dts from include search path for CPP of: remove drivers/of/testcase-data from include search path for CPP of: return of_get_cpu_node from of_cpu_device_node_get if CPUs are not registered iio: srf08: add device tree binding for srf02 and srf10 ...
Diffstat (limited to 'drivers/of/irq.c')
-rw-r--r--drivers/of/irq.c77
1 files changed, 31 insertions, 46 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index ab21c846eb27..ec00ae7384c2 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -59,20 +59,19 @@ EXPORT_SYMBOL_GPL(irq_of_parse_and_map);
struct device_node *of_irq_find_parent(struct device_node *child)
{
struct device_node *p;
- const __be32 *parp;
+ phandle parent;
if (!of_node_get(child))
return NULL;
do {
- parp = of_get_property(child, "interrupt-parent", NULL);
- if (parp == NULL)
+ if (of_property_read_u32(child, "interrupt-parent", &parent)) {
p = of_get_parent(child);
- else {
+ } else {
if (of_irq_workarounds & OF_IMAP_NO_PHANDLE)
p = of_node_get(of_irq_dflt_pic);
else
- p = of_find_node_by_phandle(be32_to_cpup(parp));
+ p = of_find_node_by_phandle(parent);
}
of_node_put(child);
child = p;
@@ -117,11 +116,8 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
* is none, we are nice and just walk up the tree
*/
do {
- tmp = of_get_property(ipar, "#interrupt-cells", NULL);
- if (tmp != NULL) {
- intsize = be32_to_cpu(*tmp);
+ if (!of_property_read_u32(ipar, "#interrupt-cells", &intsize))
break;
- }
tnode = ipar;
ipar = of_irq_find_parent(ipar);
of_node_put(tnode);
@@ -131,7 +127,7 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
goto fail;
}
- pr_debug("of_irq_parse_raw: ipar=%s, size=%d\n", of_node_full_name(ipar), intsize);
+ pr_debug("of_irq_parse_raw: ipar=%pOF, size=%d\n", ipar, intsize);
if (out_irq->args_count != intsize)
goto fail;
@@ -169,8 +165,7 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
/* Now check if cursor is an interrupt-controller and if it is
* then we are done
*/
- if (of_get_property(ipar, "interrupt-controller", NULL) !=
- NULL) {
+ if (of_property_read_bool(ipar, "interrupt-controller")) {
pr_debug(" -> got it !\n");
return 0;
}
@@ -229,14 +224,14 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
/* Get #interrupt-cells and #address-cells of new
* parent
*/
- tmp = of_get_property(newpar, "#interrupt-cells", NULL);
- if (tmp == NULL) {
+ if (of_property_read_u32(newpar, "#interrupt-cells",
+ &newintsize)) {
pr_debug(" -> parent lacks #interrupt-cells!\n");
goto fail;
}
- newintsize = be32_to_cpu(*tmp);
- tmp = of_get_property(newpar, "#address-cells", NULL);
- newaddrsize = (tmp == NULL) ? 0 : be32_to_cpu(*tmp);
+ if (of_property_read_u32(newpar, "#address-cells",
+ &newaddrsize))
+ newaddrsize = 0;
pr_debug(" -> newintsize=%d, newaddrsize=%d\n",
newintsize, newaddrsize);
@@ -269,7 +264,7 @@ int of_irq_parse_raw(const __be32 *addr, struct of_phandle_args *out_irq)
skiplevel:
/* Iterate again with new parent */
out_irq->np = newpar;
- pr_debug(" -> new parent: %s\n", of_node_full_name(newpar));
+ pr_debug(" -> new parent: %pOF\n", newpar);
of_node_put(ipar);
ipar = newpar;
newpar = NULL;
@@ -297,11 +292,11 @@ EXPORT_SYMBOL_GPL(of_irq_parse_raw);
int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_args *out_irq)
{
struct device_node *p;
- const __be32 *intspec, *tmp, *addr;
- u32 intsize, intlen;
+ const __be32 *addr;
+ u32 intsize;
int i, res;
- pr_debug("of_irq_parse_one: dev=%s, index=%d\n", of_node_full_name(device), index);
+ pr_debug("of_irq_parse_one: dev=%pOF, index=%d\n", device, index);
/* OldWorld mac stuff is "special", handle out of line */
if (of_irq_workarounds & OF_IMAP_OLDWORLD_MAC)
@@ -316,42 +311,32 @@ int of_irq_parse_one(struct device_node *device, int index, struct of_phandle_ar
if (!res)
return of_irq_parse_raw(addr, out_irq);
- /* Get the interrupts property */
- intspec = of_get_property(device, "interrupts", &intlen);
- if (intspec == NULL)
- return -EINVAL;
-
- intlen /= sizeof(*intspec);
-
- pr_debug(" intspec=%d intlen=%d\n", be32_to_cpup(intspec), intlen);
-
/* Look for the interrupt parent. */
p = of_irq_find_parent(device);
if (p == NULL)
return -EINVAL;
/* Get size of interrupt specifier */
- tmp = of_get_property(p, "#interrupt-cells", NULL);
- if (tmp == NULL) {
+ if (of_property_read_u32(p, "#interrupt-cells", &intsize)) {
res = -EINVAL;
goto out;
}
- intsize = be32_to_cpu(*tmp);
- pr_debug(" intsize=%d intlen=%d\n", intsize, intlen);
-
- /* Check index */
- if ((index + 1) * intsize > intlen) {
- res = -EINVAL;
- goto out;
- }
+ pr_debug(" parent=%pOF, intsize=%d\n", p, intsize);
/* Copy intspec into irq structure */
- intspec += index * intsize;
out_irq->np = p;
out_irq->args_count = intsize;
- for (i = 0; i < intsize; i++)
- out_irq->args[i] = be32_to_cpup(intspec++);
+ for (i = 0; i < intsize; i++) {
+ res = of_property_read_u32_index(device, "interrupts",
+ (index * intsize) + i,
+ out_irq->args + i);
+ if (res)
+ goto out;
+ }
+
+ pr_debug(" intspec=%d\n", *out_irq->args);
+
/* Check if there are any interrupt-map translations to process */
res = of_irq_parse_raw(addr, out_irq);
@@ -508,7 +493,7 @@ void __init of_irq_init(const struct of_device_id *matches)
INIT_LIST_HEAD(&intc_parent_list);
for_each_matching_node_and_match(np, matches, &match) {
- if (!of_find_property(np, "interrupt-controller", NULL) ||
+ if (!of_property_read_bool(np, "interrupt-controller") ||
!of_device_is_available(np))
continue;
@@ -555,8 +540,8 @@ void __init of_irq_init(const struct of_device_id *matches)
of_node_set_flag(desc->dev, OF_POPULATED);
- pr_debug("of_irq_init: init %s (%p), parent %p\n",
- desc->dev->full_name,
+ pr_debug("of_irq_init: init %pOF (%p), parent %p\n",
+ desc->dev,
desc->dev, desc->interrupt_parent);
ret = desc->irq_init_cb(desc->dev,
desc->interrupt_parent);