diff options
Diffstat (limited to 'drivers/usb/misc/ldusb.c')
| -rw-r--r-- | drivers/usb/misc/ldusb.c | 53 |
1 files changed, 24 insertions, 29 deletions
diff --git a/drivers/usb/misc/ldusb.c b/drivers/usb/misc/ldusb.c index 3bc5356832db..9d9487c66f87 100644 --- a/drivers/usb/misc/ldusb.c +++ b/drivers/usb/misc/ldusb.c @@ -122,13 +122,13 @@ MODULE_SUPPORTED_DEVICE("LD USB Devices"); * avoid racing conditions and get better performance of the driver. */ static int ring_buffer_size = 128; -module_param(ring_buffer_size, int, 0); +module_param(ring_buffer_size, int, 0000); MODULE_PARM_DESC(ring_buffer_size, "Read ring buffer size in reports"); /* The write_buffer can contain more than one interrupt out transfer. */ static int write_buffer_size = 10; -module_param(write_buffer_size, int, 0); +module_param(write_buffer_size, int, 0000); MODULE_PARM_DESC(write_buffer_size, "Write buffer size in reports"); /* As of kernel version 2.6.4 ehci-hcd uses an @@ -141,30 +141,30 @@ MODULE_PARM_DESC(write_buffer_size, "Write buffer size in reports"); * or set to 1 to use the standard interval from the endpoint descriptors. */ static int min_interrupt_in_interval = 2; -module_param(min_interrupt_in_interval, int, 0); +module_param(min_interrupt_in_interval, int, 0000); MODULE_PARM_DESC(min_interrupt_in_interval, "Minimum interrupt in interval in ms"); static int min_interrupt_out_interval = 2; -module_param(min_interrupt_out_interval, int, 0); +module_param(min_interrupt_out_interval, int, 0000); MODULE_PARM_DESC(min_interrupt_out_interval, "Minimum interrupt out interval in ms"); /* Structure to hold all of our device specific stuff */ struct ld_usb { struct mutex mutex; /* locks this structure */ - struct usb_interface* intf; /* save off the usb interface pointer */ + struct usb_interface *intf; /* save off the usb interface pointer */ int open_count; /* number of times this port has been opened */ - char* ring_buffer; + char *ring_buffer; unsigned int ring_head; unsigned int ring_tail; wait_queue_head_t read_wait; wait_queue_head_t write_wait; - char* interrupt_in_buffer; - struct usb_endpoint_descriptor* interrupt_in_endpoint; - struct urb* interrupt_in_urb; + char *interrupt_in_buffer; + struct usb_endpoint_descriptor *interrupt_in_endpoint; + struct urb *interrupt_in_urb; int interrupt_in_interval; size_t interrupt_in_endpoint_size; int interrupt_in_running; @@ -172,9 +172,9 @@ struct ld_usb { int buffer_overflow; spinlock_t rbsl; - char* interrupt_out_buffer; - struct usb_endpoint_descriptor* interrupt_out_endpoint; - struct urb* interrupt_out_urb; + char *interrupt_out_buffer; + struct usb_endpoint_descriptor *interrupt_out_endpoint; + struct urb *interrupt_out_urb; int interrupt_out_interval; size_t interrupt_out_endpoint_size; int interrupt_out_busy; @@ -244,7 +244,7 @@ static void ld_usb_interrupt_in_callback(struct urb *urb) if (urb->actual_length > 0) { next_ring_head = (dev->ring_head+1) % ring_buffer_size; if (next_ring_head != dev->ring_tail) { - actual_buffer = (size_t*)(dev->ring_buffer + dev->ring_head*(sizeof(size_t)+dev->interrupt_in_endpoint_size)); + actual_buffer = (size_t *)(dev->ring_buffer + dev->ring_head * (sizeof(size_t)+dev->interrupt_in_endpoint_size)); /* actual_buffer gets urb->actual_length + interrupt_in_buffer */ *actual_buffer = urb->actual_length; memcpy(actual_buffer+1, dev->interrupt_in_buffer, urb->actual_length); @@ -483,7 +483,7 @@ static ssize_t ld_usb_read(struct file *file, char __user *buffer, size_t count, } /* actual_buffer contains actual_length + interrupt_in_buffer */ - actual_buffer = (size_t*)(dev->ring_buffer + dev->ring_tail*(sizeof(size_t)+dev->interrupt_in_endpoint_size)); + actual_buffer = (size_t *)(dev->ring_buffer + dev->ring_tail * (sizeof(size_t)+dev->interrupt_in_endpoint_size)); bytes_to_read = min(count, *actual_buffer); if (bytes_to_read < *actual_buffer) dev_warn(&dev->intf->dev, "Read buffer overflow, %zd bytes dropped\n", @@ -561,7 +561,7 @@ static ssize_t ld_usb_write(struct file *file, const char __user *buffer, /* write the data into interrupt_out_buffer from userspace */ bytes_to_write = min(count, write_buffer_size*dev->interrupt_out_endpoint_size); if (bytes_to_write < count) - dev_warn(&dev->intf->dev, "Write buffer overflow, %zd bytes dropped\n",count-bytes_to_write); + dev_warn(&dev->intf->dev, "Write buffer overflow, %zd bytes dropped\n", count-bytes_to_write); dev_dbg(&dev->intf->dev, "%s: count = %zd, bytes_to_write = %zd\n", __func__, count, bytes_to_write); @@ -650,10 +650,9 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * struct usb_device *udev = interface_to_usbdev(intf); struct ld_usb *dev = NULL; struct usb_host_interface *iface_desc; - struct usb_endpoint_descriptor *endpoint; char *buffer; - int i; int retval = -ENOMEM; + int res; /* allocate memory for our device state and initialize it */ @@ -681,21 +680,17 @@ static int ld_usb_probe(struct usb_interface *intf, const struct usb_device_id * iface_desc = intf->cur_altsetting; - /* set up the endpoint information */ - for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { - endpoint = &iface_desc->endpoint[i].desc; - - if (usb_endpoint_is_int_in(endpoint)) - dev->interrupt_in_endpoint = endpoint; - - if (usb_endpoint_is_int_out(endpoint)) - dev->interrupt_out_endpoint = endpoint; - } - if (dev->interrupt_in_endpoint == NULL) { + res = usb_find_last_int_in_endpoint(iface_desc, + &dev->interrupt_in_endpoint); + if (res) { dev_err(&intf->dev, "Interrupt in endpoint not found\n"); + retval = res; goto error; } - if (dev->interrupt_out_endpoint == NULL) + + res = usb_find_last_int_out_endpoint(iface_desc, + &dev->interrupt_out_endpoint); + if (res) dev_warn(&intf->dev, "Interrupt out endpoint not found (using control endpoint instead)\n"); dev->interrupt_in_endpoint_size = usb_endpoint_maxp(dev->interrupt_in_endpoint); |