---

yaml --- r: 109301 b: refs/heads/master c: 9ea2b82 h: refs/heads/master i: 109299: a274382 v: v3
git-mirror · Aug 26, 2008 · 683d7ea · 683d7ea
1 parent 9b5434f
commit 683d7ea
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Showing 2 changed files with 10 additions and 6 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 85f1cb60157e06d9e8996b02fad9ba6964523d75
+refs/heads/master: 9ea2b82ed6265a31f9a84886d74d8a2ef01b27c8
diff --git a/trunk/arch/x86/kernel/cpuid.c b/trunk/arch/x86/kernel/cpuid.c
@@ -89,7 +89,8 @@ static ssize_t cpuid_read(struct file *file, char __user *buf,
 	struct cpuid_regs cmd;
 	int cpu = iminor(file->f_path.dentry->d_inode);
 	u64 pos = *ppos;
-	int err;
+	ssize_t bytes = 0;
+	int err = 0;
 
 	if (count % 16)
 		return -EINVAL;	/* Invalid chunk size */
@@ -99,14 +100,17 @@ static ssize_t cpuid_read(struct file *file, char __user *buf,
 		cmd.ecx = pos >> 32;
 		err = smp_call_function_single(cpu, cpuid_smp_cpuid, &cmd, 1);
 		if (err)
-			return err;
-		if (copy_to_user(tmp, &cmd, 16))
-			return -EFAULT;
+			break;
+		if (copy_to_user(tmp, &cmd, 16)) {
+			err = -EFAULT;
+			break;
+		}
 		tmp += 16;
+		bytes += 16;
 		*ppos = ++pos;
 	}
 
-	return tmp - buf;
+	return bytes ? bytes : err;
 }
 
 static int cpuid_open(struct inode *inode, struct file *file)