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USB: uhci: no need to check return value of debugfs_create functions

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When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2018-05-29 17:30:51 +02:00
parent 26d0b228b4
commit 377058707e
1 changed files with 4 additions and 11 deletions
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15
drivers/usb/host/uhci-hcd.c
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@ -590,14 +590,10 @@ static int uhci_start(struct usb_hcd *hcd)
init_waitqueue_head(&uhci->waitqh);
#ifdef UHCI_DEBUG_OPS
dentry = debugfs_create_file(hcd->self.bus_name,
S_IFREG|S_IRUGO|S_IWUSR, uhci_debugfs_root,
uhci, &uhci_debug_operations);
if (!dentry) {
dev_err(uhci_dev(uhci), "couldn't create uhci debugfs entry\n");
return -ENOMEM;
}
uhci->dentry = dentry;
uhci->dentry = debugfs_create_file(hcd->self.bus_name,
S_IFREG|S_IRUGO|S_IWUSR,
uhci_debugfs_root, uhci,
&uhci_debug_operations);
#endif
uhci->frame = dma_zalloc_coherent(uhci_dev(uhci),
@ -882,8 +878,6 @@ static int __init uhci_hcd_init(void)
if (!errbuf)
goto errbuf_failed;
uhci_debugfs_root = debugfs_create_dir("uhci", usb_debug_root);
if (!uhci_debugfs_root)
goto debug_failed;
#endif
uhci_up_cachep = kmem_cache_create("uhci_urb_priv",
@ -918,7 +912,6 @@ up_failed:
#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
debugfs_remove(uhci_debugfs_root);
debug_failed:
kfree(errbuf);
errbuf_failed: