Commit 96f43c2b authored by Daniel P. Berrangé's avatar Daniel P. Berrangé Committed by John Snow
Browse files

ide: avoid referencing NULL dev in rotational rate setting 



The 'dev' variable can be NULL when the guest OS calls identify on an IDE
unit that does not have a drive attached to it.

Signed-off-by: default avatarDaniel P. Berrange <berrange@redhat.com>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Message-id: 20171020091403.1479-1-berrange@redhat.com
Signed-off-by: default avatarJohn Snow <jsnow@redhat.com>
parent 2585c679

hw/ide/core.c

+3 −1
Original line number Diff line number Diff line
@@ -208,7 +208,9 @@ static void ide_identify(IDEState *s) 
    if (dev && dev->conf.discard_granularity) {

        put_le16(p + 169, 1); /* TRIM support */

    }

    if (dev) {

        put_le16(p + 217, dev->rotation_rate); /* Nominal media rotation rate */

    }



    ide_identify_size(s);

    s->identify_set = 1;