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authorRob Herring <robh@kernel.org>2019-02-17 23:14:25 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2019-02-18 12:11:04 -0800
commit0b8f452c9698d48aa92de17294032fac03d47229 (patch)
treeaee83087cb9ad4ac1567c3d0c31a834a0802a90a
parentc1c00aa53a636d635d9bfad15652fa0694b54f9d (diff)
Input: i8042 - rework DT node name comparisons
Convert string compares of DT node names to use of_node_name_eq helper instead. For the root node on SUN DT, we need to retrieve the 'name' property as it is the rare case where the 'name' property and node name differ. With both changes, it removes direct access to the node name pointer. While at it, convert the open coded loop to use for_each_child_of_node(). Signed-off-by: Rob Herring <robh@kernel.org> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
-rw-r--r--drivers/input/serio/i8042-sparcio.h21
1 files changed, 10 insertions, 11 deletions
diff --git a/drivers/input/serio/i8042-sparcio.h b/drivers/input/serio/i8042-sparcio.h
index 796289846204..fce76812843b 100644
--- a/drivers/input/serio/i8042-sparcio.h
+++ b/drivers/input/serio/i8042-sparcio.h
@@ -53,12 +53,11 @@ static struct resource *kbd_res;
static int sparc_i8042_probe(struct platform_device *op)
{
- struct device_node *dp = op->dev.of_node;
+ struct device_node *dp;
- dp = dp->child;
- while (dp) {
- if (!strcmp(dp->name, OBP_PS2KBD_NAME1) ||
- !strcmp(dp->name, OBP_PS2KBD_NAME2)) {
+ for_each_child_of_node(op->dev.of_node, dp) {
+ if (of_node_name_eq(dp, OBP_PS2KBD_NAME1) ||
+ of_node_name_eq(dp, OBP_PS2KBD_NAME2)) {
struct platform_device *kbd = of_find_device_by_node(dp);
unsigned int irq = kbd->archdata.irqs[0];
if (irq == 0xffffffff)
@@ -67,16 +66,14 @@ static int sparc_i8042_probe(struct platform_device *op)
kbd_iobase = of_ioremap(&kbd->resource[0],
0, 8, "kbd");
kbd_res = &kbd->resource[0];
- } else if (!strcmp(dp->name, OBP_PS2MS_NAME1) ||
- !strcmp(dp->name, OBP_PS2MS_NAME2)) {
+ } else if (of_node_name_eq(dp, OBP_PS2MS_NAME1) ||
+ of_node_name_eq(dp, OBP_PS2MS_NAME2)) {
struct platform_device *ms = of_find_device_by_node(dp);
unsigned int irq = ms->archdata.irqs[0];
if (irq == 0xffffffff)
irq = op->archdata.irqs[0];
i8042_aux_irq = irq;
}
-
- dp = dp->sibling;
}
return 0;
@@ -109,8 +106,9 @@ static struct platform_driver sparc_i8042_driver = {
static int __init i8042_platform_init(void)
{
struct device_node *root = of_find_node_by_path("/");
+ const char *name = of_get_property(root, "name", NULL);
- if (!strcmp(root->name, "SUNW,JavaStation-1")) {
+ if (name && !strcmp(name, "SUNW,JavaStation-1")) {
/* Hardcoded values for MrCoffee. */
i8042_kbd_irq = i8042_aux_irq = 13 | 0x20;
kbd_iobase = ioremap(0x71300060, 8);
@@ -139,8 +137,9 @@ static int __init i8042_platform_init(void)
static inline void i8042_platform_exit(void)
{
struct device_node *root = of_find_node_by_path("/");
+ const char *name = of_get_property(root, "name", NULL);
- if (strcmp(root->name, "SUNW,JavaStation-1"))
+ if (!name || strcmp(name, "SUNW,JavaStation-1"))
platform_driver_unregister(&sparc_i8042_driver);
}