Commit e09bd575 authored by AngeloGioacchino Del Regno's avatar AngeloGioacchino Del Regno Committed by Chanwoo Choi
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PM / devfreq: mtk-cci: Handle sram regulator probe deferral 



If the regulator_get_optional()	call for the SRAM regulator returns
a probe deferral, we must bail out and retry probing later: failing
to do this will	produce	unstabilities on platforms requiring the
handling for this regulator.

Fixes: b615b00c42da ("PM / devfreq: mediatek: Introduce MediaTek CCI devfreq driver")
Signed-off-by: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: default avatarChanwoo Choi <cw00.choi@samsung.com>
parent 521a547c

drivers/devfreq/mtk-cci-devfreq.c

+6 −2
Original line number Original line Diff line number Diff line
@@ -291,9 +291,13 @@ static int mtk_ccifreq_probe(struct platform_device *pdev) 
	}

	}





	drv->sram_reg = devm_regulator_get_optional(dev, "sram");

	drv->sram_reg = devm_regulator_get_optional(dev, "sram");

	if (IS_ERR(drv->sram_reg))

	if (IS_ERR(drv->sram_reg)) {

		ret = PTR_ERR(drv->sram_reg);

		if (ret == -EPROBE_DEFER)

			goto out_free_resources;



		drv->sram_reg = NULL;

		drv->sram_reg = NULL;

	else {

	} else {

		ret = regulator_enable(drv->sram_reg);

		ret = regulator_enable(drv->sram_reg);

		if (ret) {

		if (ret) {

			dev_err(dev, "failed to enable sram regulator\n");

			dev_err(dev, "failed to enable sram regulator\n");