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xephyr: Don't crash if the server advertises zero xv adaptors 

Useless as an XVideo implementation with zero adaptors might be, it's
apparently a thing in the wild. Catch this case and bail out of xv init
if it happens.

Signed-off-by: Adam Jackson <ajax@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
This commit is contained in:
Adam Jackson 2016-07-05 13:07:09 -04:00
parent 445271ec00
commit d51cce7992
1 changed files with 1 additions and 1 deletions
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2
hw/kdrive/ephyr/ephyrvideo.c
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@ -462,7 +462,7 @@ ephyrXVPrivQueryHostAdaptors(EphyrXVPriv * a_this)
if (a_this->host_adaptors) if (a_this->host_adaptors)
a_this->num_adaptors = a_this->host_adaptors->num_adaptors; a_this->num_adaptors = a_this->host_adaptors->num_adaptors;
if (a_this->num_adaptors < 0) { if (a_this->num_adaptors <= 0) {
EPHYR_LOG_ERROR("failed to get number of host adaptors\n"); EPHYR_LOG_ERROR("failed to get number of host adaptors\n");
goto out; goto out;
} }