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x86/platform/iosf_mbi: Check return value of debugfs_create properly 

The code checks the result of the first debugfs_create call several
times and fails to check the result of the subsequent calls due to
missing assigments.

Add the missing assignments and check only for !res because
debugfs_create() returns only NULL on error and not an encoded error
code.

[ tglx: Massaged changelog ]

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: David E . Box <david.e.box@linux.intel.com>
Link: http://lkml.kernel.org/r/1436366709-17683-3-git-send-email-andriy.shevchenko@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Andy Shevchenko 2015-07-08 17:45:06 +03:00 committed by Thomas Gleixner
parent 23ae2a16bb
commit 64279c7e05
1 changed files with 5 additions and 5 deletions
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10
arch/x86/platform/intel/iosf_mbi.c
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@ -240,17 +240,17 @@ static void iosf_sideband_debug_init(void)
/* mdr */
d = debugfs_create_x32("mdr", 0660, iosf_dbg, &dbg_mdr);
if (IS_ERR_OR_NULL(d))
if (!d)
goto cleanup;
/* mcrx */
debugfs_create_x32("mcrx", 0660, iosf_dbg, &dbg_mcrx);
if (IS_ERR_OR_NULL(d))
d = debugfs_create_x32("mcrx", 0660, iosf_dbg, &dbg_mcrx);
if (!d)
goto cleanup;
/* mcr - initiates mailbox tranaction */
debugfs_create_file("mcr", 0660, iosf_dbg, &dbg_mcr, &iosf_mcr_fops);
if (IS_ERR_OR_NULL(d))
d = debugfs_create_file("mcr", 0660, iosf_dbg, &dbg_mcr, &iosf_mcr_fops);
if (!d)
goto cleanup;
return;