On 01/18/2017 11:35 AM, [email protected] wrote: > From: Yegor Yefremov <[email protected]> > > In order to make the driver work with the common clock framework, this > patch converts the clk_enable()/clk_disable() to > clk_prepare_enable()/clk_disable_unprepare(). > > Also add error checking for clk_prepare_enable(). > > Signed-off-by: Yegor Yefremov <[email protected]> > --- > Changes v1 -> v2: > - add error checking for clk_prepare_enable (Marc Kleine-Budde) > > drivers/net/can/ti_hecc.c | 13 +++++++++---- > 1 file changed, 9 insertions(+), 4 deletions(-) > > diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c > index 680d1ff..8771531 100644 > --- a/drivers/net/can/ti_hecc.c > +++ b/drivers/net/can/ti_hecc.c > @@ -948,7 +948,12 @@ static int ti_hecc_probe(struct platform_device *pdev) > netif_napi_add(ndev, &priv->napi, ti_hecc_rx_poll, > HECC_DEF_NAPI_WEIGHT); > > - clk_enable(priv->clk); > + err = clk_prepare_enable(priv->clk); > + if (err) { > + dev_err(&pdev->dev, "clk_prepare_enable() failed\n"); > + goto probe_exit_clk; > + } > + > err = register_candev(ndev); > if (err) { > dev_err(&pdev->dev, "register_candev() failed\n"); > @@ -981,7 +986,7 @@ static int ti_hecc_remove(struct platform_device *pdev) > struct ti_hecc_priv *priv = netdev_priv(ndev); > > unregister_candev(ndev); > - clk_disable(priv->clk); > + clk_disable_unprepare(priv->clk); > clk_put(priv->clk); > res = platform_get_resource(pdev, IORESOURCE_MEM, 0); > iounmap(priv->base); > @@ -1006,7 +1011,7 @@ static int ti_hecc_suspend(struct platform_device > *pdev, pm_message_t state) > hecc_set_bit(priv, HECC_CANMC, HECC_CANMC_PDR); > priv->can.state = CAN_STATE_SLEEPING; > > - clk_disable(priv->clk); > + clk_disable_unprepare(priv->clk); > > return 0; > } > @@ -1016,7 +1021,7 @@ static int ti_hecc_resume(struct platform_device *pdev) > struct net_device *dev = platform_get_drvdata(pdev); > struct ti_hecc_priv *priv = netdev_priv(dev); > > - clk_enable(priv->clk); > + clk_prepare_enable(priv->clk);
I've added error checking here, too. > > hecc_clear_bit(priv, HECC_CANMC, HECC_CANMC_PDR); > priv->can.state = CAN_STATE_ERROR_ACTIVE; > Applied to can. Tnx, Marc -- Pengutronix e.K. | Marc Kleine-Budde | Industrial Linux Solutions | Phone: +49-231-2826-924 | Vertretung West/Dortmund | Fax: +49-5121-206917-5555 | Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
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