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usb: dwc3: debugfs: Re-use DEFINE_SHOW_ATTRIBUTE() macro 

...instead of open coding file operations followed by custom ->open()
callbacks per each attribute.

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
This commit is contained in:
Felipe Balbi 2018-02-15 13:03:38 +02:00
parent 2247276989
commit 6d5b53c1fd
1 changed files with 30 additions and 49 deletions
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79
drivers/usb/dwc3/debugfs.c
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@ -487,8 +487,8 @@ static const struct file_operations dwc3_link_state_fops = {
};
struct dwc3_ep_file_map {
char name[25];
int (*show)(struct seq_file *s, void *unused);
const char name[25];
const struct file_operations *const fops;
};
static int dwc3_tx_fifo_queue_show(struct seq_file *s, void *unused)
@ -596,7 +596,7 @@ static int dwc3_event_queue_show(struct seq_file *s, void *unused)
return 0;
}
static int dwc3_ep_transfer_type_show(struct seq_file *s, void *unused)
static int dwc3_transfer_type_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
@ -632,7 +632,7 @@ static int dwc3_ep_transfer_type_show(struct seq_file *s, void *unused)
return 0;
}
static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused)
static int dwc3_trb_ring_show(struct seq_file *s, void *unused)
{
struct dwc3_ep *dep = s->private;
struct dwc3 *dwc = dep->dwc;
@ -670,58 +670,39 @@ static int dwc3_ep_trb_ring_show(struct seq_file *s, void *unused)
return 0;
}
static struct dwc3_ep_file_map map[] = {
{ "tx_fifo_queue", dwc3_tx_fifo_queue_show, },
{ "rx_fifo_queue", dwc3_rx_fifo_queue_show, },
{ "tx_request_queue", dwc3_tx_request_queue_show, },
{ "rx_request_queue", dwc3_rx_request_queue_show, },
{ "rx_info_queue", dwc3_rx_info_queue_show, },
{ "descriptor_fetch_queue", dwc3_descriptor_fetch_queue_show, },
{ "event_queue", dwc3_event_queue_show, },
{ "transfer_type", dwc3_ep_transfer_type_show, },
{ "trb_ring", dwc3_ep_trb_ring_show, },
DEFINE_SHOW_ATTRIBUTE(dwc3_tx_fifo_queue);
DEFINE_SHOW_ATTRIBUTE(dwc3_rx_fifo_queue);
DEFINE_SHOW_ATTRIBUTE(dwc3_tx_request_queue);
DEFINE_SHOW_ATTRIBUTE(dwc3_rx_request_queue);
DEFINE_SHOW_ATTRIBUTE(dwc3_rx_info_queue);
DEFINE_SHOW_ATTRIBUTE(dwc3_descriptor_fetch_queue);
DEFINE_SHOW_ATTRIBUTE(dwc3_event_queue);
DEFINE_SHOW_ATTRIBUTE(dwc3_transfer_type);
DEFINE_SHOW_ATTRIBUTE(dwc3_trb_ring);
static const struct dwc3_ep_file_map dwc3_ep_file_map[] = {
{ "tx_fifo_queue", &dwc3_tx_fifo_queue_fops, },
{ "rx_fifo_queue", &dwc3_rx_fifo_queue_fops, },
{ "tx_request_queue", &dwc3_tx_request_queue_fops, },
{ "rx_request_queue", &dwc3_rx_request_queue_fops, },
{ "rx_info_queue", &dwc3_rx_info_queue_fops, },
{ "descriptor_fetch_queue", &dwc3_descriptor_fetch_queue_fops, },
{ "event_queue", &dwc3_event_queue_fops, },
{ "transfer_type", &dwc3_transfer_type_fops, },
{ "trb_ring", &dwc3_trb_ring_fops, },
};
static int dwc3_endpoint_open(struct inode *inode, struct file *file)
{
const char *file_name = file_dentry(file)->d_iname;
struct dwc3_ep_file_map *f_map;
int i;
for (i = 0; i < ARRAY_SIZE(map); i++) {
f_map = &map[i];
if (strcmp(f_map->name, file_name) == 0)
break;
}
return single_open(file, f_map->show, inode->i_private);
}
static const struct file_operations dwc3_endpoint_fops = {
.open = dwc3_endpoint_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
};
static void dwc3_debugfs_create_endpoint_file(struct dwc3_ep *dep,
struct dentry *parent, int type)
{
struct dentry *file;
struct dwc3_ep_file_map *ep_file = &map[type];
file = debugfs_create_file(ep_file->name, S_IRUGO, parent, dep,
&dwc3_endpoint_fops);
}
static void dwc3_debugfs_create_endpoint_files(struct dwc3_ep *dep,
struct dentry *parent)
{
int i;
for (i = 0; i < ARRAY_SIZE(map); i++)
dwc3_debugfs_create_endpoint_file(dep, parent, i);
for (i = 0; i < ARRAY_SIZE(dwc3_ep_file_map); i++) {
const struct file_operations *fops = dwc3_ep_file_map[i].fops;
const char *name = dwc3_ep_file_map[i].name;
debugfs_create_file(name, S_IRUGO, parent, dep, fops);
}
}
static void dwc3_debugfs_create_endpoint_dir(struct dwc3_ep *dep,