This is a note to let you know that I've just added the patch titled

driver core: Fix handling of SYNC_STATE_ONLY + STATELESS device links

to my driver-core git tree which can be found at git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git in the driver-core-linus branch.

The patch will show up in the next release of the linux-next tree (usually sometime within the next 24 hours during the week.)

The patch will hopefully also be merged in Linus's tree for the next -rc kernel release.

If you have any questions about this process, please let me know.

From 44e960490ddf868fc9135151c4a658936e771dc2 Mon Sep 17 00:00:00 2001

From: Saravana Kannan saravanak@google.com Date: Tue, 19 May 2020 21:36:26 -0700 Subject: driver core: Fix handling of SYNC_STATE_ONLY + STATELESS device links

Commit 21c27f06587d ("driver core: Fix SYNC_STATE_ONLY device link implementation") didn't completely fix STATELESS + SYNC_STATE_ONLY handling.

What looks like an optimization in that commit is actually a bug that causes an if condition to always take the else path. This prevents reordering of devices in the dpm_list when a DL_FLAG_STATELESS device link is create on top of an existing DL_FLAG_SYNC_STATE_ONLY device link.

Fixes: 21c27f06587d ("driver core: Fix SYNC_STATE_ONLY device link implementation") Signed-off-by: Saravana Kannan saravanak@google.com Cc: stable stable@vger.kernel.org Reviewed-by: Rafael J. Wysocki rafael.j.wysocki@intel.com Link: https://lore.kernel.org/r/20200520043626.181820-1-saravanak@google.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/base/core.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/base/core.c b/drivers/base/core.c index 4e0e430315d9..0cad34f1eede 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -360,12 +360,14 @@ struct device_link *device_link_add(struct device *consumer,

if (flags & DL_FLAG_STATELESS) { kref_get(&link->kref); - link->flags |= DL_FLAG_STATELESS; if (link->flags & DL_FLAG_SYNC_STATE_ONLY && - !(link->flags & DL_FLAG_STATELESS)) + !(link->flags & DL_FLAG_STATELESS)) { + link->flags |= DL_FLAG_STATELESS; goto reorder; - else + } else { + link->flags |= DL_FLAG_STATELESS; goto out; + } }

/*