From: Frank Munzert <munzert@de.ibm.com>
Date: Fri, 27 Jul 2007 10:29:17 +0000 (+0200)
Subject: [S390] vmur: fix diag14_read.
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2b3d8c9e06392d5539aa5d652f3a3c385fd19333;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

[S390] vmur: fix diag14_read.

Record length of spool file must be only stored in 1st SPLINK record

Signed-off-by: Frank Munzert <munzert@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/drivers/s390/char/vmur.c b/drivers/s390/char/vmur.c
index e90b0f846195..161867cebd8c 100644
--- a/drivers/s390/char/vmur.c
+++ b/drivers/s390/char/vmur.c
@@ -486,7 +486,7 @@ static ssize_t diag14_read(struct file *file, char __user *ubuf, size_t count,
 		}
 		if (rc)
 			goto fail;
-		if (reclen)
+		if (reclen && (copied == 0) && (*offs < PAGE_SIZE))
 			*((u16 *) &buf[FILE_RECLEN_OFFSET]) = reclen;
 		len = min(count - copied, PAGE_SIZE - res);
 		if (copy_to_user(ubuf + copied, buf + res, len)) {