[LTP] [PATCH] pty04: Fix read retries

[Richard Palethorpe]

We need to increase the data pointer by the amount already read.

Signed-off-by: Richard Palethorpe <rpalethorpe@suse.com>
---
 testcases/kernel/pty/pty04.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/testcases/kernel/pty/pty04.c b/testcases/kernel/pty/pty04.c
index 68a84ea87..d574d8b2c 100644
--- a/testcases/kernel/pty/pty04.c
+++ b/testcases/kernel/pty/pty04.c
@@ -294,7 +294,7 @@ static void try_read(int fd, char *data, ssize_t size)
 	int retry = mtu;
 
 	while (retry--) {
-		ret = read(fd, data, size - n);
+		ret = read(fd, data + n, size - n);
 
 		if (ret < 0)
 			break;
-- 
2.26.1