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path: root/drivers/usb/host/ohci-dbg.c
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Diffstat (limited to 'drivers/usb/host/ohci-dbg.c')
-rw-r--r--drivers/usb/host/ohci-dbg.c31
1 files changed, 10 insertions, 21 deletions
diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c
index d3269656aa4d..811f5dfdc582 100644
--- a/drivers/usb/host/ohci-dbg.c
+++ b/drivers/usb/host/ohci-dbg.c
@@ -431,7 +431,7 @@ static struct dentry *ohci_debug_root;
struct debug_buffer {
ssize_t (*fill_func)(struct debug_buffer *); /* fill method */
- struct device *dev;
+ struct ohci_hcd *ohci;
struct mutex mutex; /* protect filling of buffer */
size_t count; /* number of characters filled into buffer */
char *page;
@@ -505,15 +505,11 @@ show_list (struct ohci_hcd *ohci, char *buf, size_t count, struct ed *ed)
static ssize_t fill_async_buffer(struct debug_buffer *buf)
{
- struct usb_bus *bus;
- struct usb_hcd *hcd;
struct ohci_hcd *ohci;
size_t temp;
unsigned long flags;
- bus = dev_get_drvdata(buf->dev);
- hcd = bus_to_hcd(bus);
- ohci = hcd_to_ohci(hcd);
+ ohci = buf->ohci;
/* display control and bulk lists together, for simplicity */
spin_lock_irqsave (&ohci->lock, flags);
@@ -529,8 +525,6 @@ static ssize_t fill_async_buffer(struct debug_buffer *buf)
static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
{
- struct usb_bus *bus;
- struct usb_hcd *hcd;
struct ohci_hcd *ohci;
struct ed **seen, *ed;
unsigned long flags;
@@ -542,9 +536,7 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
return 0;
seen_count = 0;
- bus = (struct usb_bus *)dev_get_drvdata(buf->dev);
- hcd = bus_to_hcd(bus);
- ohci = hcd_to_ohci(hcd);
+ ohci = buf->ohci;
next = buf->page;
size = PAGE_SIZE;
@@ -626,7 +618,6 @@ static ssize_t fill_periodic_buffer(struct debug_buffer *buf)
static ssize_t fill_registers_buffer(struct debug_buffer *buf)
{
- struct usb_bus *bus;
struct usb_hcd *hcd;
struct ohci_hcd *ohci;
struct ohci_regs __iomem *regs;
@@ -635,9 +626,8 @@ static ssize_t fill_registers_buffer(struct debug_buffer *buf)
char *next;
u32 rdata;
- bus = (struct usb_bus *)dev_get_drvdata(buf->dev);
- hcd = bus_to_hcd(bus);
- ohci = hcd_to_ohci(hcd);
+ ohci = buf->ohci;
+ hcd = ohci_to_hcd(ohci);
regs = ohci->regs;
next = buf->page;
size = PAGE_SIZE;
@@ -710,7 +700,7 @@ done:
return PAGE_SIZE - size;
}
-static struct debug_buffer *alloc_buffer(struct device *dev,
+static struct debug_buffer *alloc_buffer(struct ohci_hcd *ohci,
ssize_t (*fill_func)(struct debug_buffer *))
{
struct debug_buffer *buf;
@@ -718,7 +708,7 @@ static struct debug_buffer *alloc_buffer(struct device *dev,
buf = kzalloc(sizeof(struct debug_buffer), GFP_KERNEL);
if (buf) {
- buf->dev = dev;
+ buf->ohci = ohci;
buf->fill_func = fill_func;
mutex_init(&buf->mutex);
}
@@ -810,26 +800,25 @@ static int debug_registers_open(struct inode *inode, struct file *file)
static inline void create_debug_files (struct ohci_hcd *ohci)
{
struct usb_bus *bus = &ohci_to_hcd(ohci)->self;
- struct device *dev = bus->dev;
ohci->debug_dir = debugfs_create_dir(bus->bus_name, ohci_debug_root);
if (!ohci->debug_dir)
goto dir_error;
ohci->debug_async = debugfs_create_file("async", S_IRUGO,
- ohci->debug_dir, dev,
+ ohci->debug_dir, ohci,
&debug_async_fops);
if (!ohci->debug_async)
goto async_error;
ohci->debug_periodic = debugfs_create_file("periodic", S_IRUGO,
- ohci->debug_dir, dev,
+ ohci->debug_dir, ohci,
&debug_periodic_fops);
if (!ohci->debug_periodic)
goto periodic_error;
ohci->debug_registers = debugfs_create_file("registers", S_IRUGO,
- ohci->debug_dir, dev,
+ ohci->debug_dir, ohci,
&debug_registers_fops);
if (!ohci->debug_registers)
goto registers_error;