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authorArnd Bergmann <arnd@arndb.de>2016-10-10 13:12:58 +0200
committerDarren Hart <dvhart@linux.intel.com>2016-10-12 01:12:28 -0700
commit127595ed21c1bb24e20d488914b70ca7a643f7a4 (patch)
treec104bd156e074785c14ca2df8e73648e57f4df28 /drivers/platform
parentea1a76bad8c9d0e7d91e7e4c9adf98fe3c7f09b7 (diff)
platform/x86: intel_pmc_core: avoid boot time warning for !CONFIG_DEBUGFS_FS
While looking at a patch that introduced a compile-time warning "‘pmc_core_dev_state_get’ defined but not used" (I sent a patch for debugfs to fix it), I noticed that the same patch caused it in intel_pmc_core also introduced a bogus run-time warning: "PMC Core: debugfs register failed". The problem is the IS_ERR_OR_NULL() check that as usual gets things wrong: when CONFIG_DEBUGFS_FS is disabled, debugfs_create_dir() fails with an error code, and we don't need to warn about it, unlike the case in which it returns NULL. This reverts the driver to the previous state of not warning about CONFIG_DEBUGFS_FS being disabled. I chose not to restore the driver to making a runtime error in debugfs fatal in pmc_core_probe(). Fixes: df2294fb6428 ("intel_pmc_core: Convert to DEFINE_DEBUGFS_ATTRIBUTE") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Diffstat (limited to 'drivers/platform')
-rw-r--r--drivers/platform/x86/intel_pmc_core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/platform/x86/intel_pmc_core.c b/drivers/platform/x86/intel_pmc_core.c
index 520b58a04daa..e8b1b836ca2d 100644
--- a/drivers/platform/x86/intel_pmc_core.c
+++ b/drivers/platform/x86/intel_pmc_core.c
@@ -100,7 +100,7 @@ static int pmc_core_dbgfs_register(struct pmc_dev *pmcdev)
struct dentry *dir, *file;
dir = debugfs_create_dir("pmc_core", NULL);
- if (IS_ERR_OR_NULL(dir))
+ if (!dir)
return -ENOMEM;
pmcdev->dbgfs_dir = dir;