i2c: Document the message size limit

[safe/jmp/linux-2.6] / drivers / char / toshiba.c

diff --git a/drivers/char/toshiba.c b/drivers/char/toshiba.c
index e2fb234..f8bc79f 100644 (file)
--- a/drivers/char/toshiba.c
+++ b/drivers/char/toshiba.c
@@ -58,7 +58,6 @@
 
 #include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/sched.h>
 #include <linux/types.h>
 #include <linux/fcntl.h>
 #include <linux/miscdevice.h>
@@ -68,7 +67,8 @@
 #include <linux/init.h>
 #include <linux/stat.h>
 #include <linux/proc_fs.h>
-
+#include <linux/seq_file.h>
+#include <linux/smp_lock.h>
 #include <linux/toshiba.h>
 
 #define TOSH_MINOR_DEV 181
@@ -88,13 +88,13 @@ static int tosh_date;
 static int tosh_sci;
 static int tosh_fan;
 
-static int tosh_ioctl(struct inode *, struct file *, unsigned int,
+static long tosh_ioctl(struct file *, unsigned int,
        unsigned long);
 
 
-static struct file_operations tosh_fops = {
+static const struct file_operations tosh_fops = {
        .owner          = THIS_MODULE,
-       .ioctl          = tosh_ioctl,
+       .unlocked_ioctl = tosh_ioctl,
 };
 
 static struct miscdevice tosh_device = {
@@ -249,10 +249,10 @@ int tosh_smm(SMMRegisters *regs)
 
        return eax;
 }
+EXPORT_SYMBOL(tosh_smm);
 
 
-static int tosh_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
-       unsigned long arg)
+static long tosh_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
 {
        SMMRegisters regs;
        SMMRegisters __user *argp = (SMMRegisters __user *)arg;
@@ -274,13 +274,16 @@ static int tosh_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
                                return -EINVAL;
 
                        /* do we need to emulate the fan ? */
+                       lock_kernel();
                        if (tosh_fan==1) {
                                if (((ax==0xf300) || (ax==0xf400)) && (bx==0x0004)) {
                                        err = tosh_emulate_fan(&regs);
+                                       unlock_kernel();
                                        break;
                                }
                        }
                        err = tosh_smm(&regs);
+                       unlock_kernel();
                        break;
                default:
                        return -EINVAL;
@@ -297,12 +300,10 @@ static int tosh_ioctl(struct inode *ip, struct file *fp, unsigned int cmd,
  * Print the information for /proc/toshiba
  */
 #ifdef CONFIG_PROC_FS
-static int tosh_get_info(char *buffer, char **start, off_t fpos, int length)
+static int proc_toshiba_show(struct seq_file *m, void *v)
 {
-       char *temp;
        int key;
 
-       temp = buffer;
        key = tosh_fn_status();
 
        /* Arguments
@@ -313,8 +314,7 @@ static int tosh_get_info(char *buffer, char **start, off_t fpos, int length)
             4) BIOS date (in SCI date format)
             5) Fn Key status
        */
-
-       temp += sprintf(temp, "1.1 0x%04x %d.%d %d.%d 0x%04x 0x%02x\n",
+       seq_printf(m, "1.1 0x%04x %d.%d %d.%d 0x%04x 0x%02x\n",
                tosh_id,
                (tosh_sci & 0xff00)>>8,
                tosh_sci & 0xff,
@@ -322,9 +322,21 @@ static int tosh_get_info(char *buffer, char **start, off_t fpos, int length)
                tosh_bios & 0xff,
                tosh_date,
                key);
+       return 0;
+}
 
-       return temp-buffer;
+static int proc_toshiba_open(struct inode *inode, struct file *file)
+{
+       return single_open(file, proc_toshiba_show, NULL);
 }
+
+static const struct file_operations proc_toshiba_fops = {
+       .owner          = THIS_MODULE,
+       .open           = proc_toshiba_open,
+       .read           = seq_read,
+       .llseek         = seq_lseek,
+       .release        = single_release,
+};
 #endif
 
 
@@ -416,7 +428,7 @@ static int tosh_probe(void)
        int i,major,minor,day,year,month,flag;
        unsigned char signature[7] = { 0x54,0x4f,0x53,0x48,0x49,0x42,0x41 };
        SMMRegisters regs;
-       void __iomem *bios = ioremap(0xf0000, 0x10000);
+       void __iomem *bios = ioremap_cache(0xf0000, 0x10000);
 
        if (!bios)
                return -ENOMEM;
@@ -495,7 +507,7 @@ static int __init toshiba_init(void)
        if (tosh_probe())
                return -ENODEV;
 
-       printk(KERN_INFO "Toshiba System Managment Mode driver v" TOSH_VERSION "\n");
+       printk(KERN_INFO "Toshiba System Management Mode driver v" TOSH_VERSION "\n");
 
        /* set the port to use for Fn status if not specified as a parameter */
        if (tosh_fn==0x00)
@@ -507,10 +519,14 @@ static int __init toshiba_init(void)
                return retval;
 
 #ifdef CONFIG_PROC_FS
-       /* register the proc entry */
-       if (create_proc_info_entry("toshiba", 0, NULL, tosh_get_info) == NULL) {
-               misc_deregister(&tosh_device);
-               return -ENOMEM;
+       {
+               struct proc_dir_entry *pde;
+
+               pde = proc_create("toshiba", 0, NULL, &proc_toshiba_fops);
+               if (!pde) {
+                       misc_deregister(&tosh_device);
+                       return -ENOMEM;
+               }
        }
 #endif