[patch -next] mlx5: return -EFAULT instead of -EPERM

[Dan Carpenter <dan.carpenter@xxxxxxxxxx>]

For copy_to/from_user() failure, the correct error code is -EFAULT not
-EPERM.

Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>

diff --git a/drivers/infiniband/hw/mlx5/mr.c b/drivers/infiniband/hw/mlx5/mr.c
index e2daa8f..bd41df9 100644
--- a/drivers/infiniband/hw/mlx5/mr.c
+++ b/drivers/infiniband/hw/mlx5/mr.c
@@ -171,7 +171,7 @@ static ssize_t size_write(struct file *filp, const char __user *buf,
 	int c;
 
 	if (copy_from_user(lbuf, buf, sizeof(lbuf)))
-		return -EPERM;
+		return -EFAULT;
 
 	c = order2idx(dev, ent->order);
 	lbuf[sizeof(lbuf) - 1] = 0;
@@ -208,7 +208,7 @@ static ssize_t size_read(struct file *filp, char __user *buf, size_t count,
 		return err;
 
 	if (copy_to_user(buf, lbuf, err))
-		return -EPERM;
+		return -EFAULT;
 
 	*pos += err;
 
@@ -233,7 +233,7 @@ static ssize_t limit_write(struct file *filp, const char __user *buf,
 	int c;
 
 	if (copy_from_user(lbuf, buf, sizeof(lbuf)))
-		return -EPERM;
+		return -EFAULT;
 
 	c = order2idx(dev, ent->order);
 	lbuf[sizeof(lbuf) - 1] = 0;
@@ -270,7 +270,7 @@ static ssize_t limit_read(struct file *filp, char __user *buf, size_t count,
 		return err;
 
 	if (copy_to_user(buf, lbuf, err))
-		return -EPERM;
+		return -EFAULT;
 
 	*pos += err;
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
index c1c0eef..205753a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/cmd.c
@@ -693,7 +693,7 @@ static ssize_t dbg_write(struct file *filp, const char __user *buf,
 		return -ENOMEM;
 
 	if (copy_from_user(lbuf, buf, sizeof(lbuf)))
-		return -EPERM;
+		return -EFAULT;
 
 	lbuf[sizeof(lbuf) - 1] = 0;
 
@@ -889,7 +889,7 @@ static ssize_t data_write(struct file *filp, const char __user *buf,
 		return -ENOMEM;
 
 	if (copy_from_user(ptr, buf, count)) {
-		err = -EPERM;
+		err = -EFAULT;
 		goto out;
 	}
 	dbg->in_msg = ptr;
@@ -919,7 +919,7 @@ static ssize_t data_read(struct file *filp, char __user *buf, size_t count,
 
 	copy = min_t(int, count, dbg->outlen);
 	if (copy_to_user(buf, dbg->out_msg, copy))
-		return -EPERM;
+		return -EFAULT;
 
 	*pos += copy;
 
@@ -949,7 +949,7 @@ static ssize_t outlen_read(struct file *filp, char __user *buf, size_t count,
 		return err;
 
 	if (copy_to_user(buf, &outlen, err))
-		return -EPERM;
+		return -EFAULT;
 
 	*pos += err;
 
@@ -974,7 +974,7 @@ static ssize_t outlen_write(struct file *filp, const char __user *buf,
 	dbg->outlen = 0;
 
 	if (copy_from_user(outlen_str, buf, count))
-		return -EPERM;
+		return -EFAULT;
 
 	outlen_str[7] = 0;
 
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