Messages in this thread | | | Subject | Re: [RFC PATCH] convert uhci-hcd to use debugfs | From | Josh Boyer <> | Date | Fri, 10 Dec 2004 08:15:18 -0600 |
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On Thu, 2004-12-09 at 18:55, Greg KH wrote: > diff -Nru a/drivers/usb/host/uhci-debug.c b/drivers/usb/host/uhci-debug.c > --- a/drivers/usb/host/uhci-debug.c 2004-12-09 16:32:17 -08:00 > +++ b/drivers/usb/host/uhci-debug.c 2004-12-09 16:32:17 -08:00 > @@ -11,7 +11,7 @@ > > #include <linux/config.h> > #include <linux/kernel.h> > -#include <linux/proc_fs.h> > +#include <linux/debugfs.h> > #include <linux/smp_lock.h> > #include <asm/io.h> > > @@ -507,7 +496,7 @@ > > #define MAX_OUTPUT (64 * 1024) > > -static struct proc_dir_entry *uhci_proc_root = NULL; > +static struct dentry *uhci_debugfs_root = NULL; > > struct uhci_proc { > int size; > @@ -517,8 +506,7 @@ > > static int uhci_proc_open(struct inode *inode, struct file *file) > {
Didn't want to rename this uhci_debug_open?
> - const struct proc_dir_entry *dp = PDE(inode); > - struct uhci_hcd *uhci = dp->data; > + struct uhci_hcd *uhci = inode->u.generic_ip; > struct uhci_proc *up; > int ret = -ENOMEM; > > diff -Nru a/drivers/usb/host/uhci-hcd.c b/drivers/usb/host/uhci-hcd.c > --- a/drivers/usb/host/uhci-hcd.c 2004-12-09 16:32:31 -08:00 > +++ b/drivers/usb/host/uhci-hcd.c 2004-12-09 16:32:31 -08:00 > @@ -46,7 +46,7 @@ > #include <linux/unistd.h> > #include <linux/interrupt.h> > #include <linux/spinlock.h> > -#include <linux/proc_fs.h> > +#include <linux/debugfs.h> > #include <linux/pm.h> > #include <linux/dmapool.h> > #include <linux/dma-mapping.h> > @@ -1927,12 +1927,10 @@ > uhci->fl = NULL; > } > > -#ifdef CONFIG_PROC_FS > - if (uhci->proc_entry) { > - remove_proc_entry(uhci->hcd.self.bus_name, uhci_proc_root); > - uhci->proc_entry = NULL; > + if (uhci->dentry) { > + debugfs_remove(uhci->dentry); > + uhci->dentry = NULL; > } > -#endif > } > > static int uhci_reset(struct usb_hcd *hcd) > @@ -1972,25 +1970,17 @@ > unsigned io_size; > dma_addr_t dma_handle; > struct usb_device *udev; > -#ifdef CONFIG_PROC_FS > - struct proc_dir_entry *ent; > -#endif > + struct dentry *dentry; > > io_size = pci_resource_len(to_pci_dev(uhci_dev(uhci)), hcd->region); > > -#ifdef CONFIG_PROC_FS > - ent = create_proc_entry(hcd->self.bus_name, S_IFREG|S_IRUGO|S_IWUSR, uhci_proc_root); > - if (!ent) { > - dev_err(uhci_dev(uhci), "couldn't create uhci proc entry\n"); > + dentry = debugfs_create_file(hcd->self.bus_name, S_IFREG|S_IRUGO|S_IWUSR, uhci_debugfs_root, uhci, &uhci_proc_operations); > + if (!dentry) {
That won't work if debugfs is not configured. You'll get back (void *) -ENODEV, which is not NULL.
> + dev_err(uhci_dev(uhci), "couldn't create uhci debugfs entry\n"); > retval = -ENOMEM; > goto err_create_proc_entry; > } > - > - ent->data = uhci; > - ent->proc_fops = &uhci_proc_operations; > - ent->size = 0; > - uhci->proc_entry = ent; > -#endif > + uhci->dentry = dentry; > > uhci->fsbr = 0; > uhci->fsbrtimeout = 0; > @@ -2192,13 +2182,10 @@ > uhci->fl = NULL; > > err_alloc_fl: > -#ifdef CONFIG_PROC_FS > - remove_proc_entry(hcd->self.bus_name, uhci_proc_root); > - uhci->proc_entry = NULL; > + debugfs_remove(uhci->dentry); > + uhci->dentry = NULL; > > err_create_proc_entry: > -#endif > - > return retval; > } > > @@ -2405,11 +2392,9 @@ > goto errbuf_failed; > } > > -#ifdef CONFIG_PROC_FS > - uhci_proc_root = create_proc_entry("driver/uhci", S_IFDIR, NULL); > - if (!uhci_proc_root) > + uhci_debugfs_root = debugfs_create_dir("uhci", NULL); > + if (!uhci_debugfs_root)
Same thing here.
> goto proc_failed; > -#endif > > uhci_up_cachep = kmem_cache_create("uhci_urb_priv", > sizeof(struct urb_priv), 0, 0, NULL, NULL);
josh
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