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ARM: cleanup: debugfs error handling 

Debugfs functions return NULL when they fail, or an error pointer
when not configured.  The intention behind the error pointer is that
it appears as a valid pointer to the caller, and so the caller
continues inspite of debugfs not being available.

Debugfs failure should only ever be checked with (!ptr) and not the
IS_ERR*() functions.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2013-02-24 10:52:18 +00:00
parent 23cbd4e84f
commit d808aa69a7
1 changed files with 3 additions and 3 deletions
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6
arch/arm/mach-omap2/pm-debug.c
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@ -219,7 +219,7 @@ static int __init pwrdms_setup(struct powerdomain *pwrdm, void *dir)
return 0; return 0;
d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir); d = debugfs_create_dir(pwrdm->name, (struct dentry *)dir);
if (!(IS_ERR_OR_NULL(d))) if (d)
(void) debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d, (void) debugfs_create_file("suspend", S_IRUGO|S_IWUSR, d,
(void *)pwrdm, &pwrdm_suspend_fops); (void *)pwrdm, &pwrdm_suspend_fops);
@ -263,8 +263,8 @@ static int __init pm_dbg_init(void)
return 0; return 0;
d = debugfs_create_dir("pm_debug", NULL); d = debugfs_create_dir("pm_debug", NULL);
if (IS_ERR_OR_NULL(d)) if (!d)
return PTR_ERR(d); return -EINVAL;
(void) debugfs_create_file("count", S_IRUGO, (void) debugfs_create_file("count", S_IRUGO,
d, (void *)DEBUG_FILE_COUNTERS, &debug_fops); d, (void *)DEBUG_FILE_COUNTERS, &debug_fops);