[PATCH] write_kmem() fix

copy_from_user() returns non-zero on faults..

[PATCH] write_kmem() fix
copy_from_user() returns non-zero on faults..
66154b6e · Andrew Morton · Linus Torvalds · fbd033be · 66154b6e
Commit 66154b6e authored Mar 26, 2004 by Andrew Morton Committed by Linus Torvalds Mar 26, 2004
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drivers/char/mem.c drivers/char/mem.c +1 -1

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--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -311,7 +311,7 @@ static ssize_t write_kmem(struct file * file, const char * buf,
 				len = PAGE_SIZE;
 			if (len) {
 				written = copy_from_user(kbuf, buf, len);
-				if (written != len) {
+				if (written) {
 					ssize_t ret;
 					free_page((unsigned long)kbuf);