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s390/ipl: avoid adding scpdata to cmdline during ftp/dvd boot 

Add missing ipl parmblock validity check to append_ipl_scpdata.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Vasily Gorbik 2018-04-03 16:03:25 +02:00 committed by Martin Schwidefsky
parent a0832b3aef
commit ecc0df0f23
1 changed files with 1 additions and 1 deletions
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2
arch/s390/kernel/ipl.c
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@ -397,7 +397,7 @@ size_t append_ipl_scpdata(char *dest, size_t len)
size_t rc;
rc = 0;
if (ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP)
if (ipl_block_valid && ipl_block.hdr.pbt == DIAG308_IPL_TYPE_FCP)
rc = reipl_append_ascii_scpdata(dest, len, &ipl_block);
else
dest[0] = 0;