From ac1fc3a3a93ca57271e4ca6072aa340b30261d1e Mon Sep 17 00:00:00 2001 From: Xie Yongji Date: Mon, 23 May 2022 16:46:04 +0800 Subject: [PATCH] block: Support passing NULL ops to blk_set_dev_ops() This supports passing NULL ops to blk_set_dev_ops() so that we can remove stale ops in some cases. Signed-off-by: Xie Yongji Reviewed-by: Stefan Hajnoczi Message-Id: <20220523084611.91-2-xieyongji@bytedance.com> Signed-off-by: Kevin Wolf --- block/block-backend.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/block-backend.c b/block/block-backend.c index d4abdf8faa..f425b00793 100644 --- a/block/block-backend.c +++ b/block/block-backend.c @@ -1058,7 +1058,7 @@ void blk_set_dev_ops(BlockBackend *blk, const BlockDevOps *ops, blk->dev_opaque = opaque; /* Are we currently quiesced? Should we enforce this right now? */ - if (blk->quiesce_counter && ops->drained_begin) { + if (blk->quiesce_counter && ops && ops->drained_begin) { ops->drained_begin(opaque); } } -- 2.30.2