[PATCH v2 5/5] riscv: check for kernel config option in t-head memory types errata

From: Heiko Stuebner
Date: Mon Sep 05 2022 - 07:11:00 EST


The t-head variant of page-based memory types should also check first
for the enabled kernel config option.

Fixes: a35707c3d850 ("riscv: add memory-type errata for T-Head")
Signed-off-by: Heiko Stuebner <heiko@xxxxxxxxx>
Reviewed-by: Conor Dooley <conor.dooley@xxxxxxxxxxxxx>
Reviewed-by: Andrew Jones <ajones@xxxxxxxxxxxxxxxx>
---
arch/riscv/errata/thead/errata.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/riscv/errata/thead/errata.c b/arch/riscv/errata/thead/errata.c
index a6f4bd8ccf3f..902e12452821 100644
--- a/arch/riscv/errata/thead/errata.c
+++ b/arch/riscv/errata/thead/errata.c
@@ -17,6 +17,9 @@
static bool errata_probe_pbmt(unsigned int stage,
unsigned long arch_id, unsigned long impid)
{
+ if (!IS_ENABLED(CONFIG_ERRATA_THEAD_PBMT))
+ return false;
+
if (arch_id != 0 || impid != 0)
return false;

--
2.35.1