[Qemu-devel] [PATCH] io: simplify qio_channel_attach_aio_context

From: Paolo Bonzini <pbonzini@redhat.com>
To: qemu-devel@nongnu.org
Subject: [Qemu-devel] [PATCH] io: simplify qio_channel_attach_aio_context
Date: Thu, 27 Apr 2017 12:15:28 +0200	[thread overview]
Message-ID: <20170427101528.12356-1-pbonzini@redhat.com> (raw)

If properly preceded by qio_channel_detach_aio_context, this function really
has nothing to do except setting ioc->ctx.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 io/channel.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/io/channel.c b/io/channel.c
index cdf74540c1..1cfb8b33a2 100644
--- a/io/channel.c
+++ b/io/channel.c
@@ -279,15 +279,9 @@ static void qio_channel_set_aio_fd_handlers(QIOChannel *ioc)
 void qio_channel_attach_aio_context(QIOChannel *ioc,
                                     AioContext *ctx)
 {
-    AioContext *old_ctx;
-    if (ioc->ctx == ctx) {
-        return;
-    }
-
-    old_ctx = ioc->ctx ? ioc->ctx : iohandler_get_aio_context();
-    qio_channel_set_aio_fd_handler(ioc, old_ctx, NULL, NULL, NULL);
+    assert(!ioc->read_coroutine);
+    assert(!ioc->write_coroutine);
     ioc->ctx = ctx;
-    qio_channel_set_aio_fd_handlers(ioc);
 }
 
 void qio_channel_detach_aio_context(QIOChannel *ioc)
-- 
2.12.2
