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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-05-29 18:31:05 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-05-31 13:54:22 +0300
commitedbeb6bc696ec727815bc6b17f7c29f4102d94b6 (patch)
tree7e163407addf01de99e313f722717c5efa60db4a /drivers/usb
parent37ea71074d13e06bbceeef6d465df81c86c99860 (diff)
downloadlinux-edbeb6bc696ec727815bc6b17f7c29f4102d94b6.tar.xz
USB: gadget: udc: pxa27x_udc: 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. There is also no need to keep the file dentries around at all, so remove those variables from the device structure. Cc: Daniel Mack <daniel@zonque.org> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: Felipe Balbi <balbi@kernel.org> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
-rw-r--r--drivers/usb/gadget/udc/pxa27x_udc.c43
-rw-r--r--drivers/usb/gadget/udc/pxa27x_udc.h3
2 files changed, 6 insertions, 40 deletions
diff --git a/drivers/usb/gadget/udc/pxa27x_udc.c b/drivers/usb/gadget/udc/pxa27x_udc.c
index a58242e901df..014233252299 100644
--- a/drivers/usb/gadget/udc/pxa27x_udc.c
+++ b/drivers/usb/gadget/udc/pxa27x_udc.c
@@ -205,50 +205,19 @@ DEFINE_SHOW_ATTRIBUTE(eps_dbg);
static void pxa_init_debugfs(struct pxa_udc *udc)
{
- struct dentry *root, *state, *queues, *eps;
+ struct dentry *root;
root = debugfs_create_dir(udc->gadget.name, NULL);
- if (IS_ERR(root) || !root)
- goto err_root;
-
- state = debugfs_create_file("udcstate", 0400, root, udc,
- &state_dbg_fops);
- if (!state)
- goto err_state;
- queues = debugfs_create_file("queues", 0400, root, udc,
- &queues_dbg_fops);
- if (!queues)
- goto err_queues;
- eps = debugfs_create_file("epstate", 0400, root, udc,
- &eps_dbg_fops);
- if (!eps)
- goto err_eps;
-
udc->debugfs_root = root;
- udc->debugfs_state = state;
- udc->debugfs_queues = queues;
- udc->debugfs_eps = eps;
- return;
-err_eps:
- debugfs_remove(eps);
-err_queues:
- debugfs_remove(queues);
-err_state:
- debugfs_remove(root);
-err_root:
- dev_err(udc->dev, "debugfs is not available\n");
+
+ debugfs_create_file("udcstate", 0400, root, udc, &state_dbg_fops);
+ debugfs_create_file("queues", 0400, root, udc, &queues_dbg_fops);
+ debugfs_create_file("epstate", 0400, root, udc, &eps_dbg_fops);
}
static void pxa_cleanup_debugfs(struct pxa_udc *udc)
{
- debugfs_remove(udc->debugfs_eps);
- debugfs_remove(udc->debugfs_queues);
- debugfs_remove(udc->debugfs_state);
- debugfs_remove(udc->debugfs_root);
- udc->debugfs_eps = NULL;
- udc->debugfs_queues = NULL;
- udc->debugfs_state = NULL;
- udc->debugfs_root = NULL;
+ debugfs_remove_recursive(udc->debugfs_root);
}
#else
diff --git a/drivers/usb/gadget/udc/pxa27x_udc.h b/drivers/usb/gadget/udc/pxa27x_udc.h
index 1128d39a4255..13b2977399ab 100644
--- a/drivers/usb/gadget/udc/pxa27x_udc.h
+++ b/drivers/usb/gadget/udc/pxa27x_udc.h
@@ -476,9 +476,6 @@ struct pxa_udc {
#endif
#ifdef CONFIG_USB_GADGET_DEBUG_FS
struct dentry *debugfs_root;
- struct dentry *debugfs_state;
- struct dentry *debugfs_queues;
- struct dentry *debugfs_eps;
#endif
};
#define to_pxa(g) (container_of((g), struct pxa_udc, gadget))