Hello! On 03/06/2017 11:09 PM, Tejun Heo wrote:
Applied the following to libata/for-4.11-fixes. Thanks. ------ 8< ------ From d4a32919c3d9c959af268d33bab24eb134dab0cc Mon Sep 17 00:00:00 2001 From: Gwendal Grignou <gwendal@xxxxxxxxxxxx> Date: Fri, 3 Mar 2017 09:00:09 -0800 Subject: [PATCH] libata: transport: Remove circular dependency at free time Without this patch, failed probe would not free resources like irq. ata port tdev object currently hold a reference to the ata port object. Therefore the ata port object release function will not get called until the ata_tport_release is called. But that would never happen, releasing the last reference of ata port dev is done by scsi_host_release, which is called by ata_host_release when the ata port object is released. The ata_tranport device objects actually do not need to explicitly
Still tranport? :-/
hold a reference to their real counterpart, given the transport objects are the children of these objects and device_add() is call for each child. We know the parent will not be deleted until we call the child's device_del(). Reported-by: Matthew Whitehead <tedheadster@xxxxxxxxx> Tested-by: Matthew Whitehead <tedheadster@xxxxxxxxx> Suggested-by: Tejun Heo <tj@xxxxxxxxxx> Signed-off-by: Gwendal Grignou <gwendal@xxxxxxxxxxxx> Signed-off-by: Tejun Heo <tj@xxxxxxxxxx>
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