Messages in this thread | | | Date | Wed, 13 Jul 2022 16:53:44 +0530 | From | Viresh Kumar <> | Subject | Re: [PATCH] cpufreq: mediatek: Handle sram regulator probe deferral |
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On 13-07-22, 13:15, AngeloGioacchino Del Regno wrote: > 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: ffa7bdf7f344 ("cpufreq: mediatek: Make sram regulator optional") > Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com> > --- > drivers/cpufreq/mediatek-cpufreq.c | 8 ++++++-- > 1 file changed, 6 insertions(+), 2 deletions(-) > > diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c > index 3a2be4552020..7f2680bc9a0f 100644 > --- a/drivers/cpufreq/mediatek-cpufreq.c > +++ b/drivers/cpufreq/mediatek-cpufreq.c > @@ -439,9 +439,13 @@ 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_optional(cpu_dev, "sram"); > - if (IS_ERR(info->sram_reg)) > + if (IS_ERR(info->sram_reg)) { > + ret = PTR_ERR(info->sram_reg); > + if (ret == -EPROBE_DEFER) > + goto out_free_resources; > + > info->sram_reg = NULL; > - else { > + } else { > ret = regulator_enable(info->sram_reg); > if (ret) { > dev_warn(cpu_dev, "cpu%d: failed to enable vsram\n", cpu);
Applied. Thanks.
-- viresh
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