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path: root/drivers/watchdog/pcwd_usb.c
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Diffstat (limited to 'drivers/watchdog/pcwd_usb.c')
-rw-r--r--drivers/watchdog/pcwd_usb.c272
1 files changed, 131 insertions, 141 deletions
diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
index afb089695da..1a11aedc4fe 100644
--- a/drivers/watchdog/pcwd_usb.c
+++ b/drivers/watchdog/pcwd_usb.c
@@ -24,13 +24,15 @@
* http://www.berkprod.com/ or http://www.pcwatchdog.com/
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <linux/module.h> /* For module specific items */
#include <linux/moduleparam.h> /* For new moduleparam's */
#include <linux/types.h> /* For standard types (like size_t) */
#include <linux/errno.h> /* For the -ENODEV/... values */
#include <linux/kernel.h> /* For printk/panic/... */
#include <linux/delay.h> /* For mdelay function */
-#include <linux/miscdevice.h> /* For MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR) */
+#include <linux/miscdevice.h> /* For struct miscdevice */
#include <linux/watchdog.h> /* For the watchdog specific items */
#include <linux/notifier.h> /* For notifier support */
#include <linux/reboot.h> /* For reboot_notifier stuff */
@@ -43,44 +45,29 @@
#include <linux/uaccess.h> /* For copy_to_user/put_user/... */
-#ifdef CONFIG_USB_DEBUG
- static int debug = 1;
-#else
- static int debug;
-#endif
-
-/* Use our own dbg macro */
-#undef dbg
-#define dbg(format, arg...) do { if (debug) printk(KERN_DEBUG PFX format "\n" , ## arg); } while (0)
-
-
/* Module and Version Information */
#define DRIVER_VERSION "1.02"
-#define DRIVER_DATE "21 Jan 2007"
#define DRIVER_AUTHOR "Wim Van Sebroeck <wim@iguana.be>"
#define DRIVER_DESC "Berkshire USB-PC Watchdog driver"
#define DRIVER_LICENSE "GPL"
#define DRIVER_NAME "pcwd_usb"
-#define PFX DRIVER_NAME ": "
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE(DRIVER_LICENSE);
-MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
-MODULE_ALIAS_MISCDEV(TEMP_MINOR);
-/* Module Parameters */
-module_param(debug, int, 0);
-MODULE_PARM_DESC(debug, "Debug enabled or not");
-
-#define WATCHDOG_HEARTBEAT 0 /* default heartbeat = delay-time from dip-switches */
+#define WATCHDOG_HEARTBEAT 0 /* default heartbeat =
+ delay-time from dip-switches */
static int heartbeat = WATCHDOG_HEARTBEAT;
module_param(heartbeat, int, 0);
-MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. (0<heartbeat<65536 or 0=delay-time from dip-switches, default=" __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
+MODULE_PARM_DESC(heartbeat, "Watchdog heartbeat in seconds. "
+ "(0<heartbeat<65536 or 0=delay-time from dip-switches, default="
+ __MODULE_STRING(WATCHDOG_HEARTBEAT) ")");
-static int nowayout = WATCHDOG_NOWAYOUT;
-module_param(nowayout, int, 0);
-MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default=" __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
+static bool nowayout = WATCHDOG_NOWAYOUT;
+module_param(nowayout, bool, 0);
+MODULE_PARM_DESC(nowayout, "Watchdog cannot be stopped once started (default="
+ __MODULE_STRING(WATCHDOG_NOWAYOUT) ")");
/* The vendor and product id's for the USB-PC Watchdog card */
#define USB_PCWD_VENDOR_ID 0x0c98
@@ -91,20 +78,21 @@ static struct usb_device_id usb_pcwd_table[] = {
{ USB_DEVICE(USB_PCWD_VENDOR_ID, USB_PCWD_PRODUCT_ID) },
{ } /* Terminating entry */
};
-MODULE_DEVICE_TABLE (usb, usb_pcwd_table);
+MODULE_DEVICE_TABLE(usb, usb_pcwd_table);
/* according to documentation max. time to process a command for the USB
* watchdog card is 100 or 200 ms, so we give it 250 ms to do it's job */
#define USB_COMMAND_TIMEOUT 250
/* Watchdog's internal commands */
-#define CMD_READ_TEMP 0x02 /* Read Temperature; Re-trigger Watchdog */
+#define CMD_READ_TEMP 0x02 /* Read Temperature;
+ Re-trigger Watchdog */
#define CMD_TRIGGER CMD_READ_TEMP
#define CMD_GET_STATUS 0x04 /* Get Status Information */
#define CMD_GET_FIRMWARE_VERSION 0x08 /* Get Firmware Version */
#define CMD_GET_DIP_SWITCH_SETTINGS 0x0c /* Get Dip Switch Settings */
#define CMD_READ_WATCHDOG_TIMEOUT 0x18 /* Read Current Watchdog Time */
-#define CMD_WRITE_WATCHDOG_TIMEOUT 0x19 /* Write Current Watchdog Time */
+#define CMD_WRITE_WATCHDOG_TIMEOUT 0x19 /* Write Current WatchdogTime */
#define CMD_ENABLE_WATCHDOG 0x30 /* Enable / Disable Watchdog */
#define CMD_DISABLE_WATCHDOG CMD_ENABLE_WATCHDOG
@@ -129,23 +117,36 @@ static char expect_release;
/* Structure to hold all of our device specific stuff */
struct usb_pcwd_private {
- struct usb_device *udev; /* save off the usb device pointer */
- struct usb_interface *interface; /* the interface for this device */
-
- unsigned int interface_number; /* the interface number used for cmd's */
-
- unsigned char *intr_buffer; /* the buffer to intr data */
- dma_addr_t intr_dma; /* the dma address for the intr buffer */
- size_t intr_size; /* the size of the intr buffer */
- struct urb *intr_urb; /* the urb used for the intr pipe */
-
- unsigned char cmd_command; /* The command that is reported back */
- unsigned char cmd_data_msb; /* The data MSB that is reported back */
- unsigned char cmd_data_lsb; /* The data LSB that is reported back */
- atomic_t cmd_received; /* true if we received a report after a command */
-
- int exists; /* Wether or not the device exists */
- struct mutex mtx; /* locks this structure */
+ /* save off the usb device pointer */
+ struct usb_device *udev;
+ /* the interface for this device */
+ struct usb_interface *interface;
+
+ /* the interface number used for cmd's */
+ unsigned int interface_number;
+
+ /* the buffer to intr data */
+ unsigned char *intr_buffer;
+ /* the dma address for the intr buffer */
+ dma_addr_t intr_dma;
+ /* the size of the intr buffer */
+ size_t intr_size;
+ /* the urb used for the intr pipe */
+ struct urb *intr_urb;
+
+ /* The command that is reported back */
+ unsigned char cmd_command;
+ /* The data MSB that is reported back */
+ unsigned char cmd_data_msb;
+ /* The data LSB that is reported back */
+ unsigned char cmd_data_lsb;
+ /* true if we received a report after a command */
+ atomic_t cmd_received;
+
+ /* Wether or not the device exists */
+ int exists;
+ /* locks this structure */
+ struct mutex mtx;
};
static struct usb_pcwd_private *usb_pcwd_device;
@@ -153,7 +154,8 @@ static struct usb_pcwd_private *usb_pcwd_device;
static DEFINE_MUTEX(disconnect_mutex);
/* local function prototypes */
-static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_device_id *id);
+static int usb_pcwd_probe(struct usb_interface *interface,
+ const struct usb_device_id *id);
static void usb_pcwd_disconnect(struct usb_interface *interface);
/* usb specific object needed to register this driver with the usb subsystem */
@@ -167,8 +169,10 @@ static struct usb_driver usb_pcwd_driver = {
static void usb_pcwd_intr_done(struct urb *urb)
{
- struct usb_pcwd_private *usb_pcwd = (struct usb_pcwd_private *)urb->context;
+ struct usb_pcwd_private *usb_pcwd =
+ (struct usb_pcwd_private *)urb->context;
unsigned char *data = usb_pcwd->intr_buffer;
+ struct device *dev = &usb_pcwd->interface->dev;
int retval;
switch (urb->status) {
@@ -178,15 +182,17 @@ static void usb_pcwd_intr_done(struct urb *urb)
case -ENOENT:
case -ESHUTDOWN:
/* this urb is terminated, clean up */
- dbg("%s - urb shutting down with status: %d", __func__, urb->status);
+ dev_dbg(dev, "%s - urb shutting down with status: %d",
+ __func__, urb->status);
return;
/* -EPIPE: should clear the halt */
default: /* error */
- dbg("%s - nonzero urb status received: %d", __func__, urb->status);
+ dev_dbg(dev, "%s - nonzero urb status received: %d",
+ __func__, urb->status);
goto resubmit;
}
- dbg("received following data cmd=0x%02x msb=0x%02x lsb=0x%02x",
+ dev_dbg(dev, "received following data cmd=0x%02x msb=0x%02x lsb=0x%02x",
data[0], data[1], data[2]);
usb_pcwd->cmd_command = data[0];
@@ -199,42 +205,51 @@ static void usb_pcwd_intr_done(struct urb *urb)
resubmit:
retval = usb_submit_urb(urb, GFP_ATOMIC);
if (retval)
- printk(KERN_ERR PFX "can't resubmit intr, usb_submit_urb failed with result %d\n",
- retval);
+ pr_err("can't resubmit intr, usb_submit_urb failed with result %d\n",
+ retval);
}
-static int usb_pcwd_send_command(struct usb_pcwd_private *usb_pcwd, unsigned char cmd,
- unsigned char *msb, unsigned char *lsb)
+static int usb_pcwd_send_command(struct usb_pcwd_private *usb_pcwd,
+ unsigned char cmd, unsigned char *msb, unsigned char *lsb)
{
int got_response, count;
- unsigned char buf[6];
+ unsigned char *buf;
- /* We will not send any commands if the USB PCWD device does not exist */
+ /* We will not send any commands if the USB PCWD device does
+ * not exist */
if ((!usb_pcwd) || (!usb_pcwd->exists))
return -1;
- /* The USB PC Watchdog uses a 6 byte report format. The board currently uses
- * only 3 of the six bytes of the report. */
+ buf = kmalloc(6, GFP_KERNEL);
+ if (buf == NULL)
+ return 0;
+
+ /* The USB PC Watchdog uses a 6 byte report format.
+ * The board currently uses only 3 of the six bytes of the report. */
buf[0] = cmd; /* Byte 0 = CMD */
buf[1] = *msb; /* Byte 1 = Data MSB */
buf[2] = *lsb; /* Byte 2 = Data LSB */
buf[3] = buf[4] = buf[5] = 0; /* All other bytes not used */
- dbg("sending following data cmd=0x%02x msb=0x%02x lsb=0x%02x",
+ dev_dbg(&usb_pcwd->interface->dev,
+ "sending following data cmd=0x%02x msb=0x%02x lsb=0x%02x",
buf[0], buf[1], buf[2]);
atomic_set(&usb_pcwd->cmd_received, 0);
if (usb_control_msg(usb_pcwd->udev, usb_sndctrlpipe(usb_pcwd->udev, 0),
HID_REQ_SET_REPORT, HID_DT_REPORT,
- 0x0200, usb_pcwd->interface_number, buf, sizeof(buf),
- USB_COMMAND_TIMEOUT) != sizeof(buf)) {
- dbg("usb_pcwd_send_command: error in usb_control_msg for cmd 0x%x 0x%x 0x%x\n", cmd, *msb, *lsb);
+ 0x0200, usb_pcwd->interface_number, buf, 6,
+ USB_COMMAND_TIMEOUT) != 6) {
+ dev_dbg(&usb_pcwd->interface->dev,
+ "usb_pcwd_send_command: error in usb_control_msg for cmd 0x%x 0x%x 0x%x\n",
+ cmd, *msb, *lsb);
}
/* wait till the usb card processed the command,
* with a max. timeout of USB_COMMAND_TIMEOUT */
got_response = 0;
- for (count = 0; (count < USB_COMMAND_TIMEOUT) && (!got_response); count++) {
+ for (count = 0; (count < USB_COMMAND_TIMEOUT) && (!got_response);
+ count++) {
mdelay(1);
if (atomic_read(&usb_pcwd->cmd_received))
got_response = 1;
@@ -246,6 +261,8 @@ static int usb_pcwd_send_command(struct usb_pcwd_private *usb_pcwd, unsigned cha
*lsb = usb_pcwd->cmd_data_lsb;
}
+ kfree(buf);
+
return got_response;
}
@@ -256,10 +273,11 @@ static int usb_pcwd_start(struct usb_pcwd_private *usb_pcwd)
int retval;
/* Enable Watchdog */
- retval = usb_pcwd_send_command(usb_pcwd, CMD_ENABLE_WATCHDOG, &msb, &lsb);
+ retval = usb_pcwd_send_command(usb_pcwd, CMD_ENABLE_WATCHDOG,
+ &msb, &lsb);
if ((retval == 0) || (lsb == 0)) {
- printk(KERN_ERR PFX "Card did not acknowledge enable attempt\n");
+ pr_err("Card did not acknowledge enable attempt\n");
return -1;
}
@@ -273,10 +291,11 @@ static int usb_pcwd_stop(struct usb_pcwd_private *usb_pcwd)
int retval;
/* Disable Watchdog */
- retval = usb_pcwd_send_command(usb_pcwd, CMD_DISABLE_WATCHDOG, &msb, &lsb);
+ retval = usb_pcwd_send_command(usb_pcwd, CMD_DISABLE_WATCHDOG,
+ &msb, &lsb);
if ((retval == 0) || (lsb != 0)) {
- printk(KERN_ERR PFX "Card did not acknowledge disable attempt\n");
+ pr_err("Card did not acknowledge disable attempt\n");
return -1;
}
@@ -308,7 +327,8 @@ static int usb_pcwd_set_heartbeat(struct usb_pcwd_private *usb_pcwd, int t)
return 0;
}
-static int usb_pcwd_get_temperature(struct usb_pcwd_private *usb_pcwd, int *temperature)
+static int usb_pcwd_get_temperature(struct usb_pcwd_private *usb_pcwd,
+ int *temperature)
{
unsigned char msb, lsb;
@@ -323,7 +343,8 @@ static int usb_pcwd_get_temperature(struct usb_pcwd_private *usb_pcwd, int *temp
return 0;
}
-static int usb_pcwd_get_timeleft(struct usb_pcwd_private *usb_pcwd, int *time_left)
+static int usb_pcwd_get_timeleft(struct usb_pcwd_private *usb_pcwd,
+ int *time_left)
{
unsigned char msb, lsb;
@@ -341,7 +362,7 @@ static int usb_pcwd_get_timeleft(struct usb_pcwd_private *usb_pcwd, int *time_le
*/
static ssize_t usb_pcwd_write(struct file *file, const char __user *data,
- size_t len, loff_t *ppos)
+ size_t len, loff_t *ppos)
{
/* See if we got the magic character 'V' and reload the timer */
if (len) {
@@ -352,7 +373,8 @@ static ssize_t usb_pcwd_write(struct file *file, const char __user *data,
* five months ago... */
expect_release = 0;
- /* scan to see whether or not we got the magic character */
+ /* scan to see whether or not we got the
+ * magic character */
for (i = 0; i != len; i++) {
char c;
if (get_user(c, data + i))
@@ -373,7 +395,7 @@ static long usb_pcwd_ioctl(struct file *file, unsigned int cmd,
{
void __user *argp = (void __user *)arg;
int __user *p = argp;
- static struct watchdog_info ident = {
+ static const struct watchdog_info ident = {
.options = WDIOF_KEEPALIVEPING |
WDIOF_SETTIMEOUT |
WDIOF_MAGICCLOSE,
@@ -431,7 +453,7 @@ static long usb_pcwd_ioctl(struct file *file, unsigned int cmd,
return -EFAULT;
if (usb_pcwd_set_heartbeat(usb_pcwd_device, new_heartbeat))
- return -EINVAL;
+ return -EINVAL;
usb_pcwd_keepalive(usb_pcwd_device);
/* Fall */
@@ -475,7 +497,7 @@ static int usb_pcwd_release(struct inode *inode, struct file *file)
if (expect_release == 42) {
usb_pcwd_stop(usb_pcwd_device);
} else {
- printk(KERN_CRIT PFX "Unexpected close, not stopping watchdog!\n");
+ pr_crit("Unexpected close, not stopping watchdog!\n");
usb_pcwd_keepalive(usb_pcwd_device);
}
expect_release = 0;
@@ -515,7 +537,8 @@ static int usb_pcwd_temperature_release(struct inode *inode, struct file *file)
* Notify system
*/
-static int usb_pcwd_notify_sys(struct notifier_block *this, unsigned long code, void *unused)
+static int usb_pcwd_notify_sys(struct notifier_block *this, unsigned long code,
+ void *unused)
{
if (code == SYS_DOWN || code == SYS_HALT)
usb_pcwd_stop(usb_pcwd_device); /* Turn the WDT off */
@@ -567,8 +590,8 @@ static inline void usb_pcwd_delete(struct usb_pcwd_private *usb_pcwd)
{
usb_free_urb(usb_pcwd->intr_urb);
if (usb_pcwd->intr_buffer != NULL)
- usb_buffer_free(usb_pcwd->udev, usb_pcwd->intr_size,
- usb_pcwd->intr_buffer, usb_pcwd->intr_dma);
+ usb_free_coherent(usb_pcwd->udev, usb_pcwd->intr_size,
+ usb_pcwd->intr_buffer, usb_pcwd->intr_dma);
kfree(usb_pcwd);
}
@@ -578,7 +601,8 @@ static inline void usb_pcwd_delete(struct usb_pcwd_private *usb_pcwd)
* Called by the usb core when a new device is connected that it thinks
* this driver might be interested in.
*/
-static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_device_id *id)
+static int usb_pcwd_probe(struct usb_interface *interface,
+ const struct usb_device_id *id)
{
struct usb_device *udev = interface_to_usbdev(interface);
struct usb_host_interface *iface_desc;
@@ -593,7 +617,7 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
cards_found++;
if (cards_found > 1) {
- printk(KERN_ERR PFX "This driver only supports 1 device\n");
+ pr_err("This driver only supports 1 device\n");
return -ENODEV;
}
@@ -602,18 +626,16 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
/* check out that we have a HID device */
if (!(iface_desc->desc.bInterfaceClass == USB_CLASS_HID)) {
- printk(KERN_ERR PFX "The device isn't a Human Interface Device\n");
+ pr_err("The device isn't a Human Interface Device\n");
return -ENODEV;
}
/* check out the endpoint: it has to be Interrupt & IN */
endpoint = &iface_desc->endpoint[0].desc;
- if (!((endpoint->bEndpointAddress & USB_DIR_IN) &&
- ((endpoint->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK)
- == USB_ENDPOINT_XFER_INT))) {
+ if (!usb_endpoint_is_int_in(endpoint)) {
/* we didn't find a Interrupt endpoint with direction IN */
- printk(KERN_ERR PFX "Couldn't find an INTR & IN endpoint\n");
+ pr_err("Couldn't find an INTR & IN endpoint\n");
return -ENODEV;
}
@@ -623,10 +645,8 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
/* allocate memory for our device and initialize it */
usb_pcwd = kzalloc(sizeof(struct usb_pcwd_private), GFP_KERNEL);
- if (usb_pcwd == NULL) {
- printk(KERN_ERR PFX "Out of memory\n");
+ if (usb_pcwd == NULL)
goto error;
- }
usb_pcwd_device = usb_pcwd;
@@ -634,19 +654,21 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
usb_pcwd->udev = udev;
usb_pcwd->interface = interface;
usb_pcwd->interface_number = iface_desc->desc.bInterfaceNumber;
- usb_pcwd->intr_size = (le16_to_cpu(endpoint->wMaxPacketSize) > 8 ? le16_to_cpu(endpoint->wMaxPacketSize) : 8);
+ usb_pcwd->intr_size = (le16_to_cpu(endpoint->wMaxPacketSize) > 8 ?
+ le16_to_cpu(endpoint->wMaxPacketSize) : 8);
/* set up the memory buffer's */
- usb_pcwd->intr_buffer = usb_buffer_alloc(udev, usb_pcwd->intr_size, GFP_ATOMIC, &usb_pcwd->intr_dma);
+ usb_pcwd->intr_buffer = usb_alloc_coherent(udev, usb_pcwd->intr_size,
+ GFP_ATOMIC, &usb_pcwd->intr_dma);
if (!usb_pcwd->intr_buffer) {
- printk(KERN_ERR PFX "Out of memory\n");
+ pr_err("Out of memory\n");
goto error;
}
/* allocate the urb's */
usb_pcwd->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
if (!usb_pcwd->intr_urb) {
- printk(KERN_ERR PFX "Out of memory\n");
+ pr_err("Out of memory\n");
goto error;
}
@@ -659,7 +681,7 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
/* register our interrupt URB with the USB system */
if (usb_submit_urb(usb_pcwd->intr_urb, GFP_KERNEL)) {
- printk(KERN_ERR PFX "Problem registering interrupt URB\n");
+ pr_err("Problem registering interrupt URB\n");
retval = -EIO; /* failure */
goto error;
}
@@ -671,19 +693,20 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
usb_pcwd_stop(usb_pcwd);
/* Get the Firmware Version */
- got_fw_rev = usb_pcwd_send_command(usb_pcwd, CMD_GET_FIRMWARE_VERSION, &fw_rev_major, &fw_rev_minor);
+ got_fw_rev = usb_pcwd_send_command(usb_pcwd, CMD_GET_FIRMWARE_VERSION,
+ &fw_rev_major, &fw_rev_minor);
if (got_fw_rev)
sprintf(fw_ver_str, "%u.%02u", fw_rev_major, fw_rev_minor);
else
sprintf(fw_ver_str, "<card no answer>");
- printk(KERN_INFO PFX "Found card (Firmware: %s) with temp option\n",
- fw_ver_str);
+ pr_info("Found card (Firmware: %s) with temp option\n", fw_ver_str);
/* Get switch settings */
- usb_pcwd_send_command(usb_pcwd, CMD_GET_DIP_SWITCH_SETTINGS, &dummy, &option_switches);
+ usb_pcwd_send_command(usb_pcwd, CMD_GET_DIP_SWITCH_SETTINGS, &dummy,
+ &option_switches);
- printk(KERN_INFO PFX "Option switches (0x%02x): Temperature Reset Enable=%s, Power On Delay=%s\n",
+ pr_info("Option switches (0x%02x): Temperature Reset Enable=%s, Power On Delay=%s\n",
option_switches,
((option_switches & 0x10) ? "ON" : "OFF"),
((option_switches & 0x08) ? "ON" : "OFF"));
@@ -692,38 +715,38 @@ static int usb_pcwd_probe(struct usb_interface *interface, const struct usb_devi
if (heartbeat == 0)
heartbeat = heartbeat_tbl[(option_switches & 0x07)];
- /* Check that the heartbeat value is within it's range ; if not reset to the default */
+ /* Check that the heartbeat value is within it's range ;
+ * if not reset to the default */
if (usb_pcwd_set_heartbeat(usb_pcwd, heartbeat)) {
usb_pcwd_set_heartbeat(usb_pcwd, WATCHDOG_HEARTBEAT);
- printk(KERN_INFO PFX "heartbeat value must be 0<heartbeat<65536, using %d\n",
+ pr_info("heartbeat value must be 0<heartbeat<65536, using %d\n",
WATCHDOG_HEARTBEAT);
}
retval = register_reboot_notifier(&usb_pcwd_notifier);
if (retval != 0) {
- printk(KERN_ERR PFX "cannot register reboot notifier (err=%d)\n",
- retval);
+ pr_err("cannot register reboot notifier (err=%d)\n", retval);
goto error;
}
retval = misc_register(&usb_pcwd_temperature_miscdev);
if (retval != 0) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- TEMP_MINOR, retval);
+ pr_err("cannot register miscdev on minor=%d (err=%d)\n",
+ TEMP_MINOR, retval);
goto err_out_unregister_reboot;
}
retval = misc_register(&usb_pcwd_miscdev);
if (retval != 0) {
- printk(KERN_ERR PFX "cannot register miscdev on minor=%d (err=%d)\n",
- WATCHDOG_MINOR, retval);
+ pr_err("cannot register miscdev on minor=%d (err=%d)\n",
+ WATCHDOG_MINOR, retval);
goto err_out_misc_deregister;
}
/* we can register the device now, as it is ready */
usb_set_intfdata(interface, usb_pcwd);
- printk(KERN_INFO PFX "initialized. heartbeat=%d sec (nowayout=%d)\n",
+ pr_info("initialized. heartbeat=%d sec (nowayout=%d)\n",
heartbeat, nowayout);
return 0;
@@ -781,40 +804,7 @@ static void usb_pcwd_disconnect(struct usb_interface *interface)
mutex_unlock(&disconnect_mutex);
- printk(KERN_INFO PFX "USB PC Watchdog disconnected\n");
-}
-
-
-
-/**
- * usb_pcwd_init
- */
-static int __init usb_pcwd_init(void)
-{
- int result;
-
- /* register this driver with the USB subsystem */
- result = usb_register(&usb_pcwd_driver);
- if (result) {
- printk(KERN_ERR PFX "usb_register failed. Error number %d\n",
- result);
- return result;
- }
-
- printk(KERN_INFO PFX DRIVER_DESC " v" DRIVER_VERSION " (" DRIVER_DATE ")\n");
- return 0;
+ pr_info("USB PC Watchdog disconnected\n");
}
-
-/**
- * usb_pcwd_exit
- */
-static void __exit usb_pcwd_exit(void)
-{
- /* deregister this driver with the USB subsystem */
- usb_deregister(&usb_pcwd_driver);
-}
-
-
-module_init(usb_pcwd_init);
-module_exit(usb_pcwd_exit);
+module_usb_driver(usb_pcwd_driver);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-09 21:17:09 +0000