perf: riscv_pmu_sbi: Set SYSCTL_LEGACY by default

This patch is workaround for LicheePi 4A.
During running ubrowser, SIGILL is occurred.
To prevent the SIGILL, sysctl_perf_user_acces is set SYSCTL_LEGACY by
default.

Change-Id: I0b33397bf7cc58c7390eccb5f6a5c7936eaec32c
Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>

diff --git a/drivers/perf/riscv_pmu_sbi.c b/drivers/perf/riscv_pmu_sbi.c
index cd8a2b9efd7874224a7dd34b4eeb87f58acf8b74..87716298553d08ed3ab629d54445e995489a1513 100644 (file)
--- a/drivers/perf/riscv_pmu_sbi.c
+++ b/drivers/perf/riscv_pmu_sbi.c
@@ -51,8 +51,9 @@ static const struct attribute_group *riscv_pmu_attr_groups[] = {
        NULL,
 };
 
-/* Allow user mode access by default */
-static int sysctl_perf_user_access __read_mostly = SYSCTL_USER_ACCESS;
+/* WORKAROUND: Allow legacy mode by default when SOC is thead */
+static int sysctl_perf_user_access __read_mostly = SYSCTL_LEGACY;
+
 
 /*
  * RISC-V doesn't have heterogeneous harts yet. This need to be part of