[PATCH] drivers/usb/input: convert to dynamic input_dev allocation
Input: convert drivers/iusb/input to dynamic input_dev allocation
This is required for input_dev sysfs integration
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/input/powermate.c b/drivers/usb/input/powermate.c
index ad4afe7..b747623 100644
--- a/drivers/usb/input/powermate.c
+++ b/drivers/usb/input/powermate.c
@@ -68,7 +68,7 @@
struct usb_ctrlrequest *configcr;
dma_addr_t configcr_dma;
struct usb_device *udev;
- struct input_dev input;
+ struct input_dev *input;
spinlock_t lock;
int static_brightness;
int pulse_speed;
@@ -106,10 +106,10 @@
}
/* handle updates to device state */
- input_regs(&pm->input, regs);
- input_report_key(&pm->input, BTN_0, pm->data[0] & 0x01);
- input_report_rel(&pm->input, REL_DIAL, pm->data[1]);
- input_sync(&pm->input);
+ input_regs(pm->input, regs);
+ input_report_key(pm->input, BTN_0, pm->data[0] & 0x01);
+ input_report_rel(pm->input, REL_DIAL, pm->data[1]);
+ input_sync(pm->input);
exit:
retval = usb_submit_urb (urb, GFP_ATOMIC);
@@ -153,10 +153,10 @@
Only values of 'arg' quite close to 255 are particularly useful/spectacular.
*/
- if (pm->pulse_speed < 255){
+ if (pm->pulse_speed < 255) {
op = 0; // divide
arg = 255 - pm->pulse_speed;
- } else if (pm->pulse_speed > 255){
+ } else if (pm->pulse_speed > 255) {
op = 2; // multiply
arg = pm->pulse_speed - 255;
} else {
@@ -166,11 +166,11 @@
pm->configcr->wValue = cpu_to_le16( (pm->pulse_table << 8) | SET_PULSE_MODE );
pm->configcr->wIndex = cpu_to_le16( (arg << 8) | op );
pm->requires_update &= ~UPDATE_PULSE_MODE;
- }else if (pm->requires_update & UPDATE_STATIC_BRIGHTNESS){
+ } else if (pm->requires_update & UPDATE_STATIC_BRIGHTNESS) {
pm->configcr->wValue = cpu_to_le16( SET_STATIC_BRIGHTNESS );
pm->configcr->wIndex = cpu_to_le16( pm->static_brightness );
pm->requires_update &= ~UPDATE_STATIC_BRIGHTNESS;
- }else{
+ } else {
printk(KERN_ERR "powermate: unknown update required");
pm->requires_update = 0; /* fudge the bug */
return;
@@ -228,19 +228,19 @@
spin_lock_irqsave(&pm->lock, flags);
/* mark state updates which are required */
- if (static_brightness != pm->static_brightness){
+ if (static_brightness != pm->static_brightness) {
pm->static_brightness = static_brightness;
pm->requires_update |= UPDATE_STATIC_BRIGHTNESS;
}
- if (pulse_asleep != pm->pulse_asleep){
+ if (pulse_asleep != pm->pulse_asleep) {
pm->pulse_asleep = pulse_asleep;
pm->requires_update |= (UPDATE_PULSE_ASLEEP | UPDATE_STATIC_BRIGHTNESS);
}
- if (pulse_awake != pm->pulse_awake){
+ if (pulse_awake != pm->pulse_awake) {
pm->pulse_awake = pulse_awake;
pm->requires_update |= (UPDATE_PULSE_AWAKE | UPDATE_STATIC_BRIGHTNESS);
}
- if (pulse_speed != pm->pulse_speed || pulse_table != pm->pulse_table){
+ if (pulse_speed != pm->pulse_speed || pulse_table != pm->pulse_table) {
pm->pulse_speed = pulse_speed;
pm->pulse_table = pulse_table;
pm->requires_update |= UPDATE_PULSE_MODE;
@@ -283,6 +283,7 @@
SLAB_ATOMIC, &pm->data_dma);
if (!pm->data)
return -1;
+
pm->configcr = usb_buffer_alloc(udev, sizeof(*(pm->configcr)),
SLAB_ATOMIC, &pm->configcr_dma);
if (!pm->configcr)
@@ -308,8 +309,9 @@
struct usb_host_interface *interface;
struct usb_endpoint_descriptor *endpoint;
struct powermate_device *pm;
+ struct input_dev *input_dev;
int pipe, maxp;
- char path[64];
+ int err = -ENOMEM;
interface = intf->cur_altsetting;
endpoint = &interface->endpoint[0].desc;
@@ -323,42 +325,61 @@
0, interface->desc.bInterfaceNumber, NULL, 0,
USB_CTRL_SET_TIMEOUT);
- if (!(pm = kmalloc(sizeof(struct powermate_device), GFP_KERNEL)))
- return -ENOMEM;
+ pm = kzalloc(sizeof(struct powermate_device), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!pm || !input_dev)
+ goto fail1;
- memset(pm, 0, sizeof(struct powermate_device));
- pm->udev = udev;
-
- if (powermate_alloc_buffers(udev, pm)) {
- powermate_free_buffers(udev, pm);
- kfree(pm);
- return -ENOMEM;
- }
+ if (powermate_alloc_buffers(udev, pm))
+ goto fail2;
pm->irq = usb_alloc_urb(0, GFP_KERNEL);
- if (!pm->irq) {
- powermate_free_buffers(udev, pm);
- kfree(pm);
- return -ENOMEM;
- }
+ if (!pm->irq)
+ goto fail2;
pm->config = usb_alloc_urb(0, GFP_KERNEL);
- if (!pm->config) {
- usb_free_urb(pm->irq);
- powermate_free_buffers(udev, pm);
- kfree(pm);
- return -ENOMEM;
- }
+ if (!pm->config)
+ goto fail3;
+
+ pm->udev = udev;
+ pm->input = input_dev;
+
+ usb_make_path(udev, pm->phys, sizeof(pm->phys));
+ strlcpy(pm->phys, "/input0", sizeof(pm->phys));
spin_lock_init(&pm->lock);
- init_input_dev(&pm->input);
+
+ switch (le16_to_cpu(udev->descriptor.idProduct)) {
+ case POWERMATE_PRODUCT_NEW:
+ input_dev->name = pm_name_powermate;
+ break;
+ case POWERMATE_PRODUCT_OLD:
+ input_dev->name = pm_name_soundknob;
+ break;
+ default:
+ input_dev->name = pm_name_soundknob;
+ printk(KERN_WARNING "powermate: unknown product id %04x\n",
+ le16_to_cpu(udev->descriptor.idProduct));
+ }
+
+ input_dev->phys = pm->phys;
+ usb_to_input_id(udev, &input_dev->id);
+ input_dev->cdev.dev = &intf->dev;
+ input_dev->private = pm;
+
+ input_dev->event = powermate_input_event;
+
+ input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REL) | BIT(EV_MSC);
+ input_dev->keybit[LONG(BTN_0)] = BIT(BTN_0);
+ input_dev->relbit[LONG(REL_DIAL)] = BIT(REL_DIAL);
+ input_dev->mscbit[LONG(MSC_PULSELED)] = BIT(MSC_PULSELED);
/* get a handle to the interrupt data pipe */
pipe = usb_rcvintpipe(udev, endpoint->bEndpointAddress);
maxp = usb_maxpacket(udev, pipe, usb_pipeout(pipe));
- if(maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX){
- printk("powermate: Expected payload of %d--%d bytes, found %d bytes!\n",
+ if (maxp < POWERMATE_PAYLOAD_SIZE_MIN || maxp > POWERMATE_PAYLOAD_SIZE_MAX) {
+ printk(KERN_WARNING "powermate: Expected payload of %d--%d bytes, found %d bytes!\n",
POWERMATE_PAYLOAD_SIZE_MIN, POWERMATE_PAYLOAD_SIZE_MAX, maxp);
maxp = POWERMATE_PAYLOAD_SIZE_MAX;
}
@@ -371,35 +392,11 @@
/* register our interrupt URB with the USB system */
if (usb_submit_urb(pm->irq, GFP_KERNEL)) {
- powermate_free_buffers(udev, pm);
- kfree(pm);
- return -EIO; /* failure */
+ err = -EIO;
+ goto fail4;
}
- switch (le16_to_cpu(udev->descriptor.idProduct)) {
- case POWERMATE_PRODUCT_NEW: pm->input.name = pm_name_powermate; break;
- case POWERMATE_PRODUCT_OLD: pm->input.name = pm_name_soundknob; break;
- default:
- pm->input.name = pm_name_soundknob;
- printk(KERN_WARNING "powermate: unknown product id %04x\n",
- le16_to_cpu(udev->descriptor.idProduct));
- }
-
- pm->input.private = pm;
- pm->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REL) | BIT(EV_MSC);
- pm->input.keybit[LONG(BTN_0)] = BIT(BTN_0);
- pm->input.relbit[LONG(REL_DIAL)] = BIT(REL_DIAL);
- pm->input.mscbit[LONG(MSC_PULSELED)] = BIT(MSC_PULSELED);
- usb_to_input_id(udev, &pm->input.id);
- pm->input.event = powermate_input_event;
- pm->input.dev = &intf->dev;
- pm->input.phys = pm->phys;
-
- input_register_device(&pm->input);
-
- usb_make_path(udev, path, 64);
- snprintf(pm->phys, 64, "%s/input0", path);
- printk(KERN_INFO "input: %s on %s\n", pm->input.name, pm->input.phys);
+ input_register_device(pm->input);
/* force an update of everything */
pm->requires_update = UPDATE_PULSE_ASLEEP | UPDATE_PULSE_AWAKE | UPDATE_PULSE_MODE | UPDATE_STATIC_BRIGHTNESS;
@@ -407,6 +404,13 @@
usb_set_intfdata(intf, pm);
return 0;
+
+fail4: usb_free_urb(pm->config);
+fail3: usb_free_urb(pm->irq);
+fail2: powermate_free_buffers(udev, pm);
+fail1: input_free_device(input_dev);
+ kfree(pm);
+ return err;
}
/* Called when a USB device we've accepted ownership of is removed */
@@ -418,7 +422,7 @@
if (pm) {
pm->requires_update = 0;
usb_kill_urb(pm->irq);
- input_unregister_device(&pm->input);
+ input_unregister_device(pm->input);
usb_free_urb(pm->irq);
usb_free_urb(pm->config);
powermate_free_buffers(interface_to_usbdev(intf), pm);