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Message-ID: <20231107052824.29418-2-amhetre@nvidia.com>
Date: Tue, 7 Nov 2023 10:58:24 +0530
From: Ashish Mhetre <amhetre@...dia.com>
To: <krzysztof.kozlowski@...aro.org>, <thierry.reding@...il.com>,
<jonathanh@...dia.com>, <dmitry.osipenko@...labora.com>
CC: <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
"Ashish Mhetre" <amhetre@...dia.com>
Subject: [PATCH 2/2] memory: tegra: Skip SID programming if SID registers aren't set
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@...dia.com>
---
drivers/memory/tegra/tegra186.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/memory/tegra/tegra186.c b/drivers/memory/tegra/tegra186.c
index bd8cecc3cde2..1abbd12dce0b 100644
--- a/drivers/memory/tegra/tegra186.c
+++ b/drivers/memory/tegra/tegra186.c
@@ -88,6 +88,9 @@ 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) {
/*
--
2.17.1
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