diff options
| author | AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> | 2022-07-13 14:15:11 +0300 |
|---|---|---|
| committer | Chanwoo Choi <cw00.choi@samsung.com> | 2022-09-25 21:59:12 +0300 |
| commit | e09bd5757b5227d6804b30c58d4587f7f87d1afa (patch) | |
| tree | 6d89078b377b2939f4213fb3c7dd0b9d87fd60c7 | |
| parent | 521a547ced6477c54b4b0cc206000406c221b4d6 (diff) | |
| download | linux-e09bd5757b5227d6804b30c58d4587f7f87d1afa.tar.xz | |
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: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
| -rw-r--r-- | drivers/devfreq/mtk-cci-devfreq.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/devfreq/mtk-cci-devfreq.c b/drivers/devfreq/mtk-cci-devfreq.c index 71abb3fbd042..e5458ada5197 100644 --- a/drivers/devfreq/mtk-cci-devfreq.c +++ b/drivers/devfreq/mtk-cci-devfreq.c @@ -291,9 +291,13 @@ static int mtk_ccifreq_probe(struct platform_device *pdev) } 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; - else { + } else { ret = regulator_enable(drv->sram_reg); if (ret) { dev_err(dev, "failed to enable sram regulator\n"); |