8 files changed, 100 insertions, 216 deletions

diff --git a/drivers/watchdog/cpu5wdt.c b/drivers/watchdog/cpu5wdt.c
index 5941ca601a3a..df72f90123df 100644
--- a/drivers/watchdog/cpu5wdt.c
+++ b/drivers/watchdog/cpu5wdt.c
@@ -59,9 +59,9 @@ static int ticks = 10000;
 
 static struct {
         struct completion stop;
-        volatile int running;
+        int running;
         struct timer_list timer;
-        volatile int queue;
+        int queue;
         int default_ticks;
         unsigned long inuse;
 } cpu5wdt_device;
diff --git a/drivers/watchdog/hpwdt.c b/drivers/watchdog/hpwdt.c
index a2e174b09fe7..6483d1066b95 100644
--- a/drivers/watchdog/hpwdt.c
+++ b/drivers/watchdog/hpwdt.c
@@ -58,41 +58,6 @@ struct bios32_service_dir {
         u8 reserved[5];
 };
 
-/*
- * smbios_entry_point     - defines SMBIOS entry point structure
- *
- * anchor[4]              - anchor string (_SM_)
- * checksum               - checksum of the entry point structure
- * length                 - length of the entry point structure
- * major_ver              - major version (02h for revision 2.1)
- * minor_ver              - minor version (01h for revision 2.1)
- * max_struct_size        - size of the largest SMBIOS structure
- * revision               - entry point structure revision implemented
- * formatted_area[5]      - reserved
- * intermediate_anchor[5] - intermediate anchor string (_DMI_)
- * intermediate_checksum  - intermediate checksum
- * table_length           - structure table length
- * table_address          - structure table address
- * table_num_structs      - number of SMBIOS structures present
- * bcd_revision           - BCD revision
- */
-struct smbios_entry_point {
-        u8 anchor[4];
-        u8 checksum;
-        u8 length;
-        u8 major_ver;
-        u8 minor_ver;
-        u16 max_struct_size;
-        u8 revision;
-        u8 formatted_area[5];
-        u8 intermediate_anchor[5];
-        u8 intermediate_checksum;
-        u16 table_length;
-        u64 table_address;
-        u16 table_num_structs;
-        u8 bcd_revision;
-};
-
 /* type 212 */
 struct smbios_cru64_info {
         u8 type;
@@ -175,31 +140,13 @@ static struct pci_device_id hpwdt_devices[] = {
 };
 MODULE_DEVICE_TABLE(pci, hpwdt_devices);
 
-/*
- *      bios_checksum
- */
-static int __devinit bios_checksum(const char __iomem *ptr, int len)
-{
-        char sum = 0;
-        int i;
-
-        /*
-         * calculate checksum of size bytes. This should add up
-         * to zero if we have a valid header.
-         */
-        for (i = 0; i < len; i++)
-                sum += ptr[i];
-
-        return ((sum == 0) && (len > 0));
-}
-
 #ifndef CONFIG_X86_64
 /* --32 Bit Bios------------------------------------------------------------ */
 
 #define HPWDT_ARCH      32
 
-asmlinkage void asminline_call(struct cmn_registers *pi86Regs,
-                               unsigned long *pRomEntry)
+static void asminline_call(struct cmn_registers *pi86Regs,
+                           unsigned long *pRomEntry)
 {
         asm("pushl       %ebp               \n\t"
             "movl        %esp, %ebp         \n\t"
@@ -303,6 +250,24 @@ static int __devinit cru_detect(unsigned long map_entry,
 }
 
 /*
+ *      bios_checksum
+ */
+static int __devinit bios_checksum(const char __iomem *ptr, int len)
+{
+        char sum = 0;
+        int i;
+
+        /*
+         * calculate checksum of size bytes. This should add up
+         * to zero if we have a valid header.
+         */
+        for (i = 0; i < len; i++)
+                sum += ptr[i];
+
+        return ((sum == 0) && (len > 0));
+}
+
+/*
  *      bios32_present
  *
  *      Routine Description:
@@ -368,8 +333,8 @@ static int __devinit detect_cru_service(void)
 
 #define HPWDT_ARCH      64
 
-asmlinkage void asminline_call(struct cmn_registers *pi86Regs,
-                               unsigned long *pRomEntry)
+static void asminline_call(struct cmn_registers *pi86Regs,
+                           unsigned long *pRomEntry)
 {
         asm("pushq      %rbp            \n\t"
             "movq       %rsp, %rbp      \n\t"
@@ -410,12 +375,8 @@ asmlinkage void asminline_call(struct cmn_registers *pi86Regs,
  *      dmi_find_cru
  *
  *      Routine Description:
- *      This function checks wether or not a SMBIOS/DMI record is
+ *      This function checks whether or not a SMBIOS/DMI record is
  *      the 64bit CRU info or not
- *
- *      Return Value:
- *      0        :  SUCCESS - if record found
- *      <0       :  FAILURE - if record not found
  */
 static void __devinit dmi_find_cru(const struct dmi_header *dm)
 {
@@ -434,138 +395,11 @@ static void __devinit dmi_find_cru(const struct dmi_header *dm)
         }
 }
 
-/*
- *      dmi_table
- *
- *      Routine Description:
- *      Decode the SMBIOS/DMI table and check if we have a 64bit CRU record
- *      or not.
- *
- *      We have to be cautious here. We have seen BIOSes with DMI pointers
- *      pointing to completely the wrong place for example
- */
-static void __devinit dmi_table(u8 *buf, int len, int num,
-                      void (*decode)(const struct dmi_header *))
-{
-        u8 *data = buf;
-        int i = 0;
-
-        /*
-         *      Stop when we see all the items the table claimed to have
-         *      OR we run off the end of the table (also happens)
-         */
-        while ((i < num) && (data - buf + sizeof(struct dmi_header)) <= len) {
-                const struct dmi_header *dm = (const struct dmi_header *)data;
-
-                /*
-                 *  We want to know the total length (formated area and strings)
-                 *  before decoding to make sure we won't run off the table in
-                 *  dmi_decode or dmi_string
-                 */
-                data += dm->length;
-                while ((data - buf < len - 1) && (data[0] || data[1]))
-                        data++;
-                if (data - buf < len - 1)
-                        decode(dm);
-                data += 2;
-                i++;
-        }
-}
-
-/*
- *      smbios_present
- *
- *      Routine Description:
- *      This function parses the SMBIOS entry point table to retrieve
- *      the 64 bit CRU Service.
- *
- *      Return Value:
- *      0        :  SUCCESS
- *      <0       :  FAILURE
- */
-static int __devinit smbios_present(const char __iomem *p)
-{
-        struct smbios_entry_point *eps =
-                (struct smbios_entry_point *) p;
-        int length;
-        u8 *buf;
-
-        /* check if we have indeed the SMBIOS table entry point */
-        if ((strncmp((char *)eps->anchor, "_SM_",
-                             sizeof(eps->anchor))) == 0) {
-                length = eps->length;
-
-                /* SMBIOS v2.1 implementation might use 0x1e */
-                if ((length == 0x1e) &&
-                    (eps->major_ver == 2) &&
-                    (eps->minor_ver == 1))
-                        length = 0x1f;
-
-                /*
-                 * Now we will check:
-                 * - SMBIOS checksum must be 0
-                 * - intermediate anchor should be _DMI_
-                 * - intermediate checksum should be 0
-                 */
-                if ((bios_checksum(p, length)) &&
-                    (strncmp((char *)eps->intermediate_anchor, "_DMI_",
-                             sizeof(eps->intermediate_anchor)) == 0) &&
-                    (bios_checksum(p+0x10, 15))) {
-                        buf = ioremap(eps->table_address, eps->table_length);
-                        if (buf == NULL)
-                                return -ENODEV;
-
-
-                        /* Scan the DMI table for the 64 bit CRU service */
-                        dmi_table(buf, eps->table_length,
-                                  eps->table_num_structs, dmi_find_cru);
-
-                        iounmap(buf);
-                        return 0;
-                }
-        }
-
-        return -ENODEV;
-}
-
-static int __devinit smbios_scan_machine(void)
-{
-        char __iomem *p, *q;
-        int rc;
-
-        if (efi_enabled) {
-                if (efi.smbios == EFI_INVALID_TABLE_ADDR)
-                        return -ENODEV;
-
-                p = ioremap(efi.smbios, 32);
-                if (p == NULL)
-                        return -ENOMEM;
-
-                rc = smbios_present(p);
-                iounmap(p);
-        } else {
-                /*
-                 * Search from 0x0f0000 through 0x0fffff, inclusive.
-                 */
-                p = ioremap(PCI_ROM_BASE1, ROM_SIZE);
-                if (p == NULL)
-                        return -ENOMEM;
-
-                for (q = p; q < p + ROM_SIZE; q += 16) {
-                        rc = smbios_present(q);
-                        if (!rc) {
-                                break;
-                        }
-                }
-                iounmap(p);
-        }
-}
-
 static int __devinit detect_cru_service(void)
 {
         cru_rom_addr = NULL;
 
-        smbios_scan_machine();  /* will become dmi_walk(dmi_find_cru); */
+        dmi_walk(dmi_find_cru);
 
         /* if cru_rom_addr has been set then we found a CRU service */
         return ((cru_rom_addr != NULL)? 0: -ENODEV);
diff --git a/drivers/watchdog/it8712f_wdt.c b/drivers/watchdog/it8712f_wdt.c
index 1b6d7d1b715d..1efcad3b6fca 100644
--- a/drivers/watchdog/it8712f_wdt.c
+++ b/drivers/watchdog/it8712f_wdt.c
@@ -7,7 +7,8 @@
  *
  *      drivers/char/watchdog/scx200_wdt.c
  *      drivers/hwmon/it87.c
- *      IT8712F EC-LPC I/O Preliminary Specification 0.9.2.pdf
+ *      IT8712F EC-LPC I/O Preliminary Specification 0.8.2
+ *      IT8712F EC-LPC I/O Preliminary Specification 0.9.3
  *
  *      This program is free software; you can redistribute it and/or
  *      modify it under the terms of the GNU General Public License as
@@ -40,6 +41,7 @@ MODULE_DESCRIPTION("IT8712F Watchdog Driver");
 MODULE_LICENSE("GPL");
 MODULE_ALIAS_MISCDEV(WATCHDOG_MINOR);
 
+static int max_units = 255;
 static int margin = 60;         /* in seconds */
 module_param(margin, int, 0);
 MODULE_PARM_DESC(margin, "Watchdog margin in seconds");
@@ -51,6 +53,7 @@ MODULE_PARM_DESC(nowayout, "Disable watchdog shutdown on close");
 static struct semaphore it8712f_wdt_sem;
 static unsigned expect_close;
 static spinlock_t io_lock;
+static unsigned char revision;
 
 /* Dog Food address - We use the game port address */
 static unsigned short address;
@@ -108,6 +111,15 @@ superio_inw(int reg)
         return val;
 }
 
+static void
+superio_outw(int val, int reg)
+{
+        outb(reg++, REG);
+        outb((val >> 8) & 0xff, VAL);
+        outb(reg, REG);
+        outb(val & 0xff, VAL);
+}
+
 static inline void
 superio_select(int ldn)
 {
@@ -143,15 +155,33 @@ static void
 it8712f_wdt_update_margin(void)
 {
         int config = WDT_OUT_KRST | WDT_OUT_PWROK;
-
-        printk(KERN_INFO NAME ": timer margin %d seconds\n", margin);
-
-        /* The timeout register only has 8bits wide */
-        if (margin < 256)
-                config |= WDT_UNIT_SEC; /* else UNIT are MINUTES */
+        int units = margin;
+
+        /* Switch to minutes precision if the configured margin
+         * value does not fit within the register width.
+         */
+        if (units <= max_units) {
+                config |= WDT_UNIT_SEC; /* else UNIT is MINUTES */
+                printk(KERN_INFO NAME ": timer margin %d seconds\n", units);
+        } else {
+                units /= 60;
+                printk(KERN_INFO NAME ": timer margin %d minutes\n", units);
+        }
         superio_outb(config, WDT_CONFIG);
 
-        superio_outb((margin > 255) ? (margin / 60) : margin, WDT_TIMEOUT);
+        if (revision >= 0x08)
+                superio_outw(units, WDT_TIMEOUT);
+        else
+                superio_outb(units, WDT_TIMEOUT);
+}
+
+static int
+it8712f_wdt_get_status(void)
+{
+        if (superio_inb(WDT_CONTROL) & 0x01)
+                return WDIOF_CARDRESET;
+        else
+                return 0;
 }
 
 static void
@@ -234,7 +264,7 @@ it8712f_wdt_ioctl(struct inode *inode, struct file *file,
                 .firmware_version = 1,
                 .options = WDIOF_SETTIMEOUT | WDIOF_KEEPALIVEPING,
         };
-        int new_margin;
+        int value;
 
         switch (cmd) {
         default:
@@ -244,17 +274,27 @@ it8712f_wdt_ioctl(struct inode *inode, struct file *file,
                         return -EFAULT;
                 return 0;
         case WDIOC_GETSTATUS:
+                superio_enter();
+                superio_select(LDN_GPIO);
+
+                value = it8712f_wdt_get_status();
+
+                superio_exit();
+
+                return put_user(value, p);
         case WDIOC_GETBOOTSTATUS:
                 return put_user(0, p);
         case WDIOC_KEEPALIVE:
                 it8712f_wdt_ping();
                 return 0;
         case WDIOC_SETTIMEOUT:
-                if (get_user(new_margin, p))
+                if (get_user(value, p))
                         return -EFAULT;
-                if (new_margin < 1)
+                if (value < 1)
+                        return -EINVAL;
+                if (value > (max_units * 60))
                         return -EINVAL;
-                margin = new_margin;
+                margin = value;
                 superio_enter();
                 superio_select(LDN_GPIO);
 
@@ -262,6 +302,7 @@ it8712f_wdt_ioctl(struct inode *inode, struct file *file,
 
                 superio_exit();
                 it8712f_wdt_ping();
+                /* Fall through */
         case WDIOC_GETTIMEOUT:
                 if (put_user(margin, p))
                         return -EFAULT;
@@ -336,9 +377,18 @@ it8712f_wdt_find(unsigned short *address)
         }
 
         err = 0;
-        printk(KERN_DEBUG NAME ": Found IT%04xF chip revision %d - "
+        revision = superio_inb(DEVREV) & 0x0f;
+
+        /* Later revisions have 16-bit values per datasheet 0.9.1 */
+        if (revision >= 0x08)
+                max_units = 65535;
+
+        if (margin > (max_units * 60))
+                margin = (max_units * 60);
+
+        printk(KERN_INFO NAME ": Found IT%04xF chip revision %d - "
                 "using DogFood address 0x%x\n",
-                chip_type, superio_inb(DEVREV) & 0x0f, *address);
+                chip_type, revision, *address);
 
 exit:
         superio_exit();
diff --git a/drivers/watchdog/machzwd.c b/drivers/watchdog/machzwd.c
index e6e07b4575eb..6905135a776c 100644
--- a/drivers/watchdog/machzwd.c
+++ b/drivers/watchdog/machzwd.c
@@ -141,7 +141,7 @@ static unsigned long next_heartbeat = 0;
 #ifndef ZF_DEBUG
 #       define dprintk(format, args...)
 #else
-#       define dprintk(format, args...) printk(KERN_DEBUG PFX ":%s:%d: " format, __FUNCTION__, __LINE__ , ## args)
+#       define dprintk(format, args...) printk(KERN_DEBUG PFX ":%s:%d: " format, __func__, __LINE__ , ## args)
 #endif
 
 
diff --git a/drivers/watchdog/mtx-1_wdt.c b/drivers/watchdog/mtx-1_wdt.c
index 789831b3fa00..10b89f2703bd 100644
--- a/drivers/watchdog/mtx-1_wdt.c
+++ b/drivers/watchdog/mtx-1_wdt.c
@@ -59,9 +59,9 @@ static int ticks = 100 * HZ;
 
 static struct {
         struct completion stop;
-        volatile int running;
+        int running;
         struct timer_list timer;
-        volatile int queue;
+        int queue;
         int default_ticks;
         unsigned long inuse;
         unsigned gpio;
diff --git a/drivers/watchdog/pcwd_usb.c b/drivers/watchdog/pcwd_usb.c
index 0f3fd6c9c354..bf443d077a1e 100644
--- a/drivers/watchdog/pcwd_usb.c
+++ b/drivers/watchdog/pcwd_usb.c
@@ -179,11 +179,11 @@ 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", __FUNCTION__, urb->status);
+                dbg("%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", __FUNCTION__, urb->status);
+                dbg("%s - nonzero urb status received: %d", __func__, urb->status);
                 goto resubmit;
         }
 
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c
index 5d1c15f83d23..7645e8812156 100644
--- a/drivers/watchdog/s3c2410_wdt.c
+++ b/drivers/watchdog/s3c2410_wdt.c
@@ -144,7 +144,7 @@ static int s3c2410wdt_start(void)
         }
 
         DBG("%s: wdt_count=0x%08x, wtcon=%08lx\n",
-            __FUNCTION__, wdt_count, wtcon);
+            __func__, wdt_count, wtcon);
 
         writel(wdt_count, wdt_base + S3C2410_WTDAT);
         writel(wdt_count, wdt_base + S3C2410_WTCNT);
@@ -167,7 +167,7 @@ static int s3c2410wdt_set_heartbeat(int timeout)
         count = timeout * freq;
 
         DBG("%s: count=%d, timeout=%d, freq=%d\n",
-            __FUNCTION__, count, timeout, freq);
+            __func__, count, timeout, freq);
 
         /* if the count is bigger than the watchdog register,
            then work out what we need to do (and if) we can
@@ -189,7 +189,7 @@ static int s3c2410wdt_set_heartbeat(int timeout)
         tmr_margin = timeout;
 
         DBG("%s: timeout=%d, divisor=%d, count=%d (%08x)\n",
-            __FUNCTION__, timeout, divisor, count, count/divisor);
+            __func__, timeout, divisor, count, count/divisor);
 
         count /= divisor;
         wdt_count = count;
@@ -355,7 +355,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev)
         int ret;
         int size;
 
-        DBG("%s: probe=%p\n", __FUNCTION__, pdev);
+        DBG("%s: probe=%p\n", __func__, pdev);
 
         dev = &pdev->dev;
         wdt_dev = &pdev->dev;
diff --git a/drivers/watchdog/shwdt.c b/drivers/watchdog/shwdt.c
index 61dde863bd40..1277f7e9cc54 100644
--- a/drivers/watchdog/shwdt.c
+++ b/drivers/watchdog/shwdt.c
@@ -298,7 +298,7 @@ static int sh_wdt_mmap(struct file *file, struct vm_area_struct *vma)
         if (io_remap_pfn_range(vma, vma->vm_start, addr >> PAGE_SHIFT,
                                PAGE_SIZE, vma->vm_page_prot)) {
                 printk(KERN_ERR PFX "%s: io_remap_pfn_range failed\n",
-                       __FUNCTION__);
+                       __func__);
                 return -EAGAIN;
         }