Re: [PATCH 4/5] xen-fbfront: handle backend CLOSED without CLOSING
From: Konrad Rzeszutek Wilk <hidden>
Date: 2012-10-19 13:12:25
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On Thu, Oct 18, 2012 at 11:03:37AM +0100, David Vrabel wrote:
From: David Vrabel <redacted> Backend drivers shouldn't transistion to CLOSED unless the frontend is CLOSED. If a backend does transition to CLOSED too soon then the frontend may not see the CLOSING state and will not properly shutdown. So, treat an unexpected backend CLOSED state the same as CLOSING. Signed-off-by: David Vrabel <redacted> Acked-by: Konrad Rzeszutek Wilk <redacted> --- Cc: linux-fbdev@vger.kernel.org Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Hey Florian, Should I prep a git pull for you with this or would it be OK if I just have your Ack to put this in my git pull for Linus? Thanks!
quoted hunk ↗ jump to hunk
--- drivers/video/xen-fbfront.c | 5 ++++- 1 files changed, 4 insertions(+), 1 deletions(-)diff --git a/drivers/video/xen-fbfront.c b/drivers/video/xen-fbfront.c index b7f5173..917bb56 100644 --- a/drivers/video/xen-fbfront.c +++ b/drivers/video/xen-fbfront.c@@ -641,7 +641,6 @@ static void xenfb_backend_changed(struct xenbus_device *dev, case XenbusStateReconfiguring: case XenbusStateReconfigured: case XenbusStateUnknown: - case XenbusStateClosed: break; case XenbusStateInitWait:@@ -670,6 +669,10 @@ InitWait: info->feature_resize = val; break; + case XenbusStateClosed: + if (dev->state = XenbusStateClosed) + break; + /* Missed the backend's CLOSING state -- fallthrough */ case XenbusStateClosing: xenbus_frontend_closed(dev); break;-- 1.7.2.5