This is a note to let you know that I've just added the patch titled
net: dsa: mv88e6xxx: Fix error when setting port policy on mv88e6393x
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:
net-dsa-mv88e6xxx-fix-error-when-setting-port-policy.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 0b867cf85222c799f0ea7d964383d247cd786bf5
Author: Peter Rashleigh <peter@xxxxxxxxxxxx>
Date: Tue Oct 15 21:08:22 2024 -0700
net: dsa: mv88e6xxx: Fix error when setting port policy on mv88e6393x
[ Upstream commit 12bc14949c4a7272b509af0f1022a0deeb215fd8 ]
mv88e6393x_port_set_policy doesn't correctly shift the ptr value when
converting the policy format between the old and new styles, so the
target register ends up with the ptr being written over the data bits.
Shift the pointer to align with the format expected by
mv88e6393x_port_policy_write().
Fixes: 6584b26020fc ("net: dsa: mv88e6xxx: implement .port_set_policy for Amethyst")
Signed-off-by: Peter Rashleigh <peter@xxxxxxxxxxxx>
Reviewed-by: Simon Horman <horms@xxxxxxxxxx>
Message-ID: <20241016040822.3917-1-peter@xxxxxxxxxxxx>
Signed-off-by: Andrew Lunn <andrew@xxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/dsa/mv88e6xxx/port.c b/drivers/net/dsa/mv88e6xxx/port.c
index ab41619a809b3..c94f2de6401cd 100644
--- a/drivers/net/dsa/mv88e6xxx/port.c
+++ b/drivers/net/dsa/mv88e6xxx/port.c
@@ -1699,6 +1699,7 @@ int mv88e6393x_port_set_policy(struct mv88e6xxx_chip *chip, int port,
ptr = shift / 8;
shift %= 8;
mask >>= ptr * 8;
+ ptr <<= 8;
err = mv88e6393x_port_policy_read(chip, port, ptr, ®);
if (err)
