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virtio: clarify feature negotiation failure

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Change-Id: Ifb1566033569af0b3cf4a9dfbc8094a9883c7622
Signed-off-by: Dariusz Stojaczyk <dariuszx.stojaczyk@intel.com>
Reviewed-on: https://review.gerrithub.io/420980
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
This commit is contained in:
Dariusz Stojaczyk 2018-08-01 11:56:16 +02:00 committed by Jim Harris
parent eeb1650c06
commit c9e5777ede
1 changed files with 3 additions and 0 deletions
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3
lib/virtio/virtio.c
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@ -266,6 +266,9 @@ virtio_negotiate_features(struct virtio_dev *dev, uint64_t req_features)
virtio_dev_set_status(dev, VIRTIO_CONFIG_S_FEATURES_OK);
if (!(virtio_dev_get_status(dev) & VIRTIO_CONFIG_S_FEATURES_OK)) {
SPDK_ERRLOG("failed to set FEATURES_OK status!\n");
/* either the device failed, or we offered some features that
* depend on other, not offered features.
*/
return -EINVAL;
}