This is a note to let you know that I've just added the patch titled
memory: tegra: Skip SID programming if SID registers aren't set
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:
memory-tegra-skip-sid-programming-if-sid-registers-a.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 3778704dee812b82f27e21671ecb0043410ebccc
Author: Ashish Mhetre <amhetre@xxxxxxxxxx>
Date: Tue Nov 7 16:57:13 2023 +0530
memory: tegra: Skip SID programming if SID registers aren't set
[ Upstream commit 0d6c918011ce4764ed277de4726a468b7ffe5fed ]
There are few MC clients where SID security and override register
offsets are not specified like "sw_cluster0" in tegra234. Don't program
SID override for such clients because it leads to access to invalid
addresses.
Signed-off-by: Ashish Mhetre <amhetre@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20231107112713.21399-2-amhetre@xxxxxxxxxx
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/memory/tegra/tegra186.c b/drivers/memory/tegra/tegra186.c
index 4bed0e54fd456..2ff586c6b1021 100644
--- a/drivers/memory/tegra/tegra186.c
+++ b/drivers/memory/tegra/tegra186.c
@@ -43,6 +43,9 @@ static void tegra186_mc_client_sid_override(struct tegra_mc *mc,
{
u32 value, old;
+ if (client->regs.sid.security == 0 && client->regs.sid.override == 0)
+ return;
+
value = readl(mc->regs + client->regs.sid.security);
if ((value & MC_SID_STREAMID_SECURITY_OVERRIDE) == 0) {
/*
