linux-kernel - Re: [PATCH v1] Bluetooth: hci_qca: Enable clocks required for BT SOC

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Date:   Thu, 14 Nov 2019 09:19:19 -0800
From:   Stephen Boyd <swboyd@...omium.org>
To:     Balakrishna Godavarthi <bgodavar@...eaurora.org>,
        johan.hedberg@...il.com, marcel@...tmann.org
Cc:     mka@...omium.org, linux-kernel@...r.kernel.org,
        linux-bluetooth@...r.kernel.org, hemantg@...eaurora.org,
        linux-arm-msm@...r.kernel.org, bgodavar@...eaurora.org,
        tientzu@...omium.org, seanpaul@...omium.org
Subject: Re: [PATCH v1] Bluetooth: hci_qca: Enable clocks required for BT SOC

Quoting Balakrishna Godavarthi (2019-11-14 00:14:30)
> @@ -1423,6 +1427,20 @@ static int qca_power_off(struct hci_dev *hdev)
>         return 0;
>  }
>  
> +static int qca_power_on(struct qca_serdev *qcadev)
> +{
> +       int err;
> +
> +       if (qcadev->susclk) {

clk_prepare_enable() shouldn't return anything besides 0 when passed a
NULL pointer. Please drop this if condition in addition to the one on
the clk_disable_unprepare().

> +               err = clk_prepare_enable(qcadev->susclk);
> +               if (err)
> +                       return err;
> +       }