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| author | Daniel P. Berrange <berrange@redhat.com> | 2017-10-20 10:14:03 +0100 |
|---|---|---|
| committer | John Snow <jsnow@redhat.com> | 2017-10-31 18:00:03 -0400 |
| commit | 96f43c2b0a663f4789b51ed97297163321e7ba5e (patch) | |
| tree | bda51e676fc1212eb1e5c011665594c5d721e75e | |
| parent | 2585c67983d726da98fbfb8b742d722c39f885cf (diff) | |
| download | focaccia-qemu-96f43c2b0a663f4789b51ed97297163321e7ba5e.tar.gz focaccia-qemu-96f43c2b0a663f4789b51ed97297163321e7ba5e.zip | |
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: Daniel P. Berrange <berrange@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-id: 20171020091403.1479-1-berrange@redhat.com Signed-off-by: John Snow <jsnow@redhat.com>
| -rw-r--r-- | hw/ide/core.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/ide/core.c b/hw/ide/core.c index a04766aee7..471d0c928b 100644 --- a/hw/ide/core.c +++ b/hw/ide/core.c @@ -208,7 +208,9 @@ static void ide_identify(IDEState *s) if (dev && dev->conf.discard_granularity) { put_le16(p + 169, 1); /* TRIM support */ } - put_le16(p + 217, dev->rotation_rate); /* Nominal media rotation rate */ + if (dev) { + put_le16(p + 217, dev->rotation_rate); /* Nominal media rotation rate */ + } ide_identify_size(s); s->identify_set = 1; |