Re: [PATCH 5.15] drm/hyperv: Don't overwrite dirt_needed value set by host

On Mon, May 08, 2023 at 03:30:02AM -0700, Saurabh Sengar wrote:

[ Upstream commit 19b5e6659eaf537ebeac90ae30c7df0296fe5ab9 ]

Existing code is causing a race condition where dirt_needed value is already set by the host and gets overwritten with default value. Remove this default setting of dirt_needed, to avoid overwriting the value received in the channel callback set by vmbus_open. Removing this setting also means the default value for dirt_needed is changed to false as it's allocated by kzalloc which is similar to legacy hyperv_fb driver.

Signed-off-by: Saurabh Sengar ssengar@linux.microsoft.com Reviewed-by: Michael Kelley mikelley@microsoft.com Reviewed-by: Dexuan Cui decui@microsoft.com

Queued up, thanks!