X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fchar%2Ftoshiba.c;fp=drivers%2Fchar%2Ftoshiba.c;h=014c9d90d297ba57f1f83c7abbe1768042971b6b;hb=690c12d2c8ca50e55a3f507059c780ecdb8fd83f;hp=f8bc79f6de34875cba7ac1e74e9110ff3c236d53;hpb=f639011b4020a8230c8d09866f6eaadcb12e8dde;p=mv-sheeva.git

diff --git a/drivers/char/toshiba.c b/drivers/char/toshiba.c
index f8bc79f6de3..014c9d90d29 100644
--- a/drivers/char/toshiba.c
+++ b/drivers/char/toshiba.c
@@ -68,7 +68,7 @@
 #include <linux/stat.h>
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
-#include <linux/smp_lock.h>
+#include <linux/mutex.h>
 #include <linux/toshiba.h>
 
 #define TOSH_MINOR_DEV 181
@@ -78,6 +78,7 @@ MODULE_AUTHOR("Jonathan Buzzard <jonathan@buzzard.org.uk>");
 MODULE_DESCRIPTION("Toshiba laptop SMM driver");
 MODULE_SUPPORTED_DEVICE("toshiba");
 
+static DEFINE_MUTEX(tosh_mutex);
 static int tosh_fn;
 module_param_named(fn, tosh_fn, int, 0);
 MODULE_PARM_DESC(fn, "User specified Fn key detection port");
@@ -95,6 +96,7 @@ static long tosh_ioctl(struct file *, unsigned int,
 static const struct file_operations tosh_fops = {
 	.owner		= THIS_MODULE,
 	.unlocked_ioctl	= tosh_ioctl,
+	.llseek		= noop_llseek,
 };
 
 static struct miscdevice tosh_device = {
@@ -274,16 +276,16 @@ static long tosh_ioctl(struct file *fp, unsigned int cmd, unsigned long arg)
 				return -EINVAL;
 
 			/* do we need to emulate the fan ? */
-			lock_kernel();
+			mutex_lock(&tosh_mutex);
 			if (tosh_fan==1) {
 				if (((ax==0xf300) || (ax==0xf400)) && (bx==0x0004)) {
 					err = tosh_emulate_fan(&regs);
-					unlock_kernel();
+					mutex_unlock(&tosh_mutex);
 					break;
 				}
 			}
 			err = tosh_smm(&regs);
-			unlock_kernel();
+			mutex_unlock(&tosh_mutex);
 			break;
 		default:
 			return -EINVAL;