5.15-stable review patch. If anyone has any objections, please let me know.
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From: Ashish Mhetre amhetre@nvidia.com
[ 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@nvidia.com Link: https://lore.kernel.org/r/20231107112713.21399-2-amhetre@nvidia.com Signed-off-by: Krzysztof Kozlowski krzysztof.kozlowski@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- 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 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) { /*