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cxgb4vf: Behave properly when CONFIG_DEBUG_FS isn't defined ...

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When CONFIG_DEBUG_FS we get "ERR_PTR()"s back from the debugfs routines
instead of NULL.  Use the right predicates to check for this.

Signed-off-by: Casey Leedom <leedom@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Casey Leedom 2011-02-14 12:56:23 +00:00 committed by David S. Miller
parent bb14a1af86
commit 843635e034
1 changed files with 8 additions and 8 deletions
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16
drivers/net/cxgb4vf/cxgb4vf_main.c
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@ -2040,7 +2040,7 @@ static int __devinit setup_debugfs(struct adapter *adapter)
{
int i;
BUG_ON(adapter->debugfs_root == NULL);
BUG_ON(IS_ERR_OR_NULL(adapter->debugfs_root));
/*
* Debugfs support is best effort.
@ -2061,7 +2061,7 @@ static int __devinit setup_debugfs(struct adapter *adapter)
*/
static void cleanup_debugfs(struct adapter *adapter)
{
BUG_ON(adapter->debugfs_root == NULL);
BUG_ON(IS_ERR_OR_NULL(adapter->debugfs_root));
/*
* Unlike our sister routine cleanup_proc(), we don't need to remove
@ -2700,11 +2700,11 @@ static int __devinit cxgb4vf_pci_probe(struct pci_dev *pdev,
/*
* Set up our debugfs entries.
*/
if (cxgb4vf_debugfs_root) {
if (!IS_ERR_OR_NULL(cxgb4vf_debugfs_root)) {
adapter->debugfs_root =
debugfs_create_dir(pci_name(pdev),
cxgb4vf_debugfs_root);
if (adapter->debugfs_root == NULL)
if (IS_ERR_OR_NULL(adapter->debugfs_root))
dev_warn(&pdev->dev, "could not create debugfs"
" directory");
else
@ -2759,7 +2759,7 @@ static int __devinit cxgb4vf_pci_probe(struct pci_dev *pdev,
*/
err_free_debugfs:
if (adapter->debugfs_root) {
if (!IS_ERR_OR_NULL(adapter->debugfs_root)) {
cleanup_debugfs(adapter);
debugfs_remove_recursive(adapter->debugfs_root);
}
@ -2828,7 +2828,7 @@ static void __devexit cxgb4vf_pci_remove(struct pci_dev *pdev)
/*
* Tear down our debugfs entries.
*/
if (adapter->debugfs_root) {
if (!IS_ERR_OR_NULL(adapter->debugfs_root)) {
cleanup_debugfs(adapter);
debugfs_remove_recursive(adapter->debugfs_root);
}
@ -2916,12 +2916,12 @@ static int __init cxgb4vf_module_init(void)
/* Debugfs support is optional, just warn if this fails */
cxgb4vf_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
if (!cxgb4vf_debugfs_root)
if (IS_ERR_OR_NULL(cxgb4vf_debugfs_root))
printk(KERN_WARNING KBUILD_MODNAME ": could not create"
" debugfs entry, continuing\n");
ret = pci_register_driver(&cxgb4vf_driver);
if (ret < 0)
if (ret < 0 && !IS_ERR_OR_NULL(cxgb4vf_debugfs_root))
debugfs_remove(cxgb4vf_debugfs_root);
return ret;
}