[PATCH V3 08/15] cpufreq: mediatek: Make sram regulator optional

[Rex-BC Chen <rex-bc.chen@mediatek.com>]

From: Jia-Wei Chang <jia-wei.chang@mediatek.com>

For some MediaTek SoCs, like MT8186, it's possible that the sram regulator
is shared between CPU and CCI.
We hope regulator framework can return NULL for error handling rather
than a dummy handler from regulator_get api.
Therefore, we choose to use regulator_get_optional.

Signed-off-by: Jia-Wei Chang <jia-wei.chang@mediatek.com>
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 drivers/cpufreq/mediatek-cpufreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c
index 4d46e823c24e..559f4a383d30 100644
--- a/drivers/cpufreq/mediatek-cpufreq.c
+++ b/drivers/cpufreq/mediatek-cpufreq.c
@@ -436,7 +436,7 @@ static int mtk_cpu_dvfs_info_init(struct mtk_cpu_dvfs_info *info, int cpu)
 	}
 
 	/* Both presence and absence of sram regulator are valid cases. */
-	info->sram_reg = regulator_get_exclusive(cpu_dev, "sram");
+	info->sram_reg = regulator_get_optional(cpu_dev, "sram");
 	if (IS_ERR(info->sram_reg))
 		info->sram_reg = NULL;
 	else {
-- 
2.18.0