perf/imx_ddr: Constify static struct attribute_group

The only usage is to put their addresses in an array of pointers to
const struct attribute group. Make them const to allow the compiler
to put them in read-only memory.

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20210117212847.21319-3-rikard.falkeborn@gmail.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/drivers/perf/fsl_imx8_ddr_perf.c b/drivers/perf/fsl_imx8_ddr_perf.c
index a11bfd8a08230c2760b2969ab74f25a20f7fff96..be1f26b62ddb8a1540449286a789742e9b374c8e 100644 (file)
--- a/drivers/perf/fsl_imx8_ddr_perf.c
+++ b/drivers/perf/fsl_imx8_ddr_perf.c
@@ -133,7 +133,7 @@ static struct attribute *ddr_perf_identifier_attrs[] = {
        NULL,
 };
 
-static struct attribute_group ddr_perf_identifier_attr_group = {
+static const struct attribute_group ddr_perf_identifier_attr_group = {
        .attrs = ddr_perf_identifier_attrs,
        .is_visible = ddr_perf_identifier_attr_visible,
 };
@@ -188,7 +188,7 @@ static struct attribute *ddr_perf_filter_cap_attr[] = {
        NULL,
 };
 
-static struct attribute_group ddr_perf_filter_cap_attr_group = {
+static const struct attribute_group ddr_perf_filter_cap_attr_group = {
        .name = "caps",
        .attrs = ddr_perf_filter_cap_attr,
 };
@@ -209,7 +209,7 @@ static struct attribute *ddr_perf_cpumask_attrs[] = {
        NULL,
 };
 
-static struct attribute_group ddr_perf_cpumask_attr_group = {
+static const struct attribute_group ddr_perf_cpumask_attr_group = {
        .attrs = ddr_perf_cpumask_attrs,
 };
 
@@ -265,7 +265,7 @@ static struct attribute *ddr_perf_events_attrs[] = {
        NULL,
 };
 
-static struct attribute_group ddr_perf_events_attr_group = {
+static const struct attribute_group ddr_perf_events_attr_group = {
        .name = "events",
        .attrs = ddr_perf_events_attrs,
 };
@@ -281,7 +281,7 @@ static struct attribute *ddr_perf_format_attrs[] = {
        NULL,
 };
 
-static struct attribute_group ddr_perf_format_attr_group = {
+static const struct attribute_group ddr_perf_format_attr_group = {
        .name = "format",
        .attrs = ddr_perf_format_attrs,
 };