Fix debugfs_create_*'s error checking method for arm/plat-omap

debugfs_create_*() returns NULL if an error occurs, returns -ENODEV
when debugfs is not enabled in the kernel.

Comparing to PATCH v1, because clk_debugfs_init is included in
"#if defined CONFIG_DEBUG_FS", we only need to check NULL return.
Thanks Li Zefan <lizf@cn.fujitsu.com>

debugfs_create_u8() and other function's return value's checking method are
also fixed in this patch.

Signed-off-by: Zhao Lei <zhaolei@cn.fujitsu.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 7bbfba2..5178701 100644 (file)
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -432,23 +432,23 @@ static int clk_debugfs_register_one(struct clk *c)
        if (c->id != 0)
                sprintf(p, ":%d", c->id);
        d = debugfs_create_dir(s, pa ? pa->dent : clk_debugfs_root);
-       if (IS_ERR(d))
-               return PTR_ERR(d);
+       if (!d)
+               return -ENOMEM;
        c->dent = d;
 
        d = debugfs_create_u8("usecount", S_IRUGO, c->dent, (u8 *)&c->usecount);
-       if (IS_ERR(d)) {
-               err = PTR_ERR(d);
+       if (!d) {
+               err = -ENOMEM;
                goto err_out;
        }
        d = debugfs_create_u32("rate", S_IRUGO, c->dent, (u32 *)&c->rate);
-       if (IS_ERR(d)) {
-               err = PTR_ERR(d);
+       if (!d) {
+               err = -ENOMEM;
                goto err_out;
        }
        d = debugfs_create_x32("flags", S_IRUGO, c->dent, (u32 *)&c->flags);
-       if (IS_ERR(d)) {
-               err = PTR_ERR(d);
+       if (!d) {
+               err = -ENOMEM;
                goto err_out;
        }
        return 0;
@@ -487,8 +487,8 @@ static int __init clk_debugfs_init(void)
        int err;
 
        d = debugfs_create_dir("clock", NULL);
-       if (IS_ERR(d))
-               return PTR_ERR(d);
+       if (!d)
+               return -ENOMEM;
        clk_debugfs_root = d;
 
        list_for_each_entry(c, &clocks, node) {