From b8fc7743406d883e68d60ad6e73a86ae9059f1e6 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 29 May 2018 17:30:57 +0200 Subject: [PATCH] USB: ehci-hcd: no need to check return value of debugfs_create functions 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 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-dbg.c | 30 ++++++++---------------------- drivers/usb/host/ehci-hcd.c | 5 ----- 2 files changed, 8 insertions(+), 27 deletions(-) diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c index 3ed75aaa09d9..7619cfb06883 100644 --- a/drivers/usb/host/ehci-dbg.c +++ b/drivers/usb/host/ehci-dbg.c @@ -1028,29 +1028,15 @@ static inline void create_debug_files(struct ehci_hcd *ehci) struct usb_bus *bus = &ehci_to_hcd(ehci)->self; ehci->debug_dir = debugfs_create_dir(bus->bus_name, ehci_debug_root); - if (!ehci->debug_dir) - return; - if (!debugfs_create_file("async", S_IRUGO, ehci->debug_dir, bus, - &debug_async_fops)) - goto file_error; - - if (!debugfs_create_file("bandwidth", S_IRUGO, ehci->debug_dir, bus, - &debug_bandwidth_fops)) - goto file_error; - - if (!debugfs_create_file("periodic", S_IRUGO, ehci->debug_dir, bus, - &debug_periodic_fops)) - goto file_error; - - if (!debugfs_create_file("registers", S_IRUGO, ehci->debug_dir, bus, - &debug_registers_fops)) - goto file_error; - - return; - -file_error: - debugfs_remove_recursive(ehci->debug_dir); + debugfs_create_file("async", S_IRUGO, ehci->debug_dir, bus, + &debug_async_fops); + debugfs_create_file("bandwidth", S_IRUGO, ehci->debug_dir, bus, + &debug_bandwidth_fops); + debugfs_create_file("periodic", S_IRUGO, ehci->debug_dir, bus, + &debug_periodic_fops); + debugfs_create_file("registers", S_IRUGO, ehci->debug_dir, bus, + &debug_registers_fops); } static inline void remove_debug_files(struct ehci_hcd *ehci) diff --git a/drivers/usb/host/ehci-hcd.c b/drivers/usb/host/ehci-hcd.c index d927adf3afcd..89c47ae5c7d3 100644 --- a/drivers/usb/host/ehci-hcd.c +++ b/drivers/usb/host/ehci-hcd.c @@ -1311,10 +1311,6 @@ static int __init ehci_hcd_init(void) #ifdef CONFIG_DYNAMIC_DEBUG ehci_debug_root = debugfs_create_dir("ehci", usb_debug_root); - if (!ehci_debug_root) { - retval = -ENOENT; - goto err_debug; - } #endif #ifdef PLATFORM_DRIVER @@ -1361,7 +1357,6 @@ clean0: #ifdef CONFIG_DYNAMIC_DEBUG debugfs_remove(ehci_debug_root); ehci_debug_root = NULL; -err_debug: #endif clear_bit(USB_EHCI_LOADED, &usb_hcds_loaded); return retval; -- 2.11.4.GIT