This is a note to let you know that I've just added the patch titled
firmware: arm_ffa: Set handle field to zero in memory descriptor
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
firmware-arm_ffa-set-handle-field-to-zero-in-memory-.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit f1dfc9538988e7cbd3d8cc931d7bf0135b247560
Author: Balint Dobszay <balint.dobszay@xxxxxxx>
Date: Thu Jun 1 16:07:49 2023 +0200
firmware: arm_ffa: Set handle field to zero in memory descriptor
[ Upstream commit 3aa0519a4780f1b8e11966bd879d4a2934ba455f ]
As described in the commit 111a833dc5cb ("firmware: arm_ffa: Set
reserved/MBZ fields to zero in the memory descriptors") some fields in
the memory descriptor have to be zeroed explicitly. The handle field is
one of these, but it was left out from that change, fix this now.
Fixes: 111a833dc5cb ("firmware: arm_ffa: Set reserved/MBZ fields to zero in the memory descriptors")
Reported-by: Imre Kis <imre.kis@xxxxxxx>
Signed-off-by: Balint Dobszay <balint.dobszay@xxxxxxx>
Link: https://lore.kernel.org/r/20230601140749.93812-1-balint.dobszay@xxxxxxx
Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/firmware/arm_ffa/driver.c b/drivers/firmware/arm_ffa/driver.c
index f53d11eff65e0..e4fb0c1ae4869 100644
--- a/drivers/firmware/arm_ffa/driver.c
+++ b/drivers/firmware/arm_ffa/driver.c
@@ -454,6 +454,7 @@ ffa_setup_and_transmit(u32 func_id, void *buffer, u32 max_fragsize,
ep_mem_access->flag = 0;
ep_mem_access->reserved = 0;
}
+ mem_region->handle = 0;
mem_region->reserved_0 = 0;
mem_region->reserved_1 = 0;
mem_region->ep_count = args->nattrs;
