| Message ID | 20220708075622.26342-2-biao.huang@mediatek.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | stmmac: dwmac-mediatek: fix clock issue | expand |
On 08/07/2022 09:56, Biao Huang wrote: > Since clocks are handled in mediatek_dwmac_clks_config(), > remove the clocks configuration in init()/exit(), and > invoke mediatek_dwmac_clks_config instead. > > This issue is found in suspend/resume test. > > Fixes: 3186bdad97d5 ("stmmac: dwmac-mediatek: add platform level clocks management") > Signed-off-by: Biao Huang <biao.huang@mediatek.com> > --- > .../ethernet/stmicro/stmmac/dwmac-mediatek.c | 32 ++++++------------- > 1 file changed, 10 insertions(+), 22 deletions(-) > > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > index 6ff88df58767..6d82cf2658e0 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > @@ -576,32 +576,12 @@ static int mediatek_dwmac_init(struct platform_device *pdev, void *priv) > } > } > > - ret = clk_bulk_prepare_enable(variant->num_clks, plat->clks); > - if (ret) { > - dev_err(plat->dev, "failed to enable clks, err = %d\n", ret); > - return ret; > - } > - > - ret = clk_prepare_enable(plat->rmii_internal_clk); > - if (ret) { > - dev_err(plat->dev, "failed to enable rmii internal clk, err = %d\n", ret); > - goto err_clk; > - } > - > return 0; > - > -err_clk: > - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); > - return ret; > } > > static void mediatek_dwmac_exit(struct platform_device *pdev, void *priv) > { > - struct mediatek_dwmac_plat_data *plat = priv; > - const struct mediatek_dwmac_variant *variant = plat->variant; > - > - clk_disable_unprepare(plat->rmii_internal_clk); > - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); > + /* nothing to do now */ We can just leave the function pointer point to NULL, that get checked before calling exit. Regards, Matthias > } > > static int mediatek_dwmac_clks_config(void *priv, bool enabled) > @@ -712,13 +692,21 @@ static int mediatek_dwmac_probe(struct platform_device *pdev) > mediatek_dwmac_common_data(pdev, plat_dat, priv_plat); > mediatek_dwmac_init(pdev, priv_plat); > > + ret = mediatek_dwmac_clks_config(priv_plat, true); > + if (ret) > + return ret; > + > ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); > if (ret) { > stmmac_remove_config_dt(pdev, plat_dat); > - return ret; > + goto err_drv_probe; > } > > return 0; > + > +err_drv_probe: > + mediatek_dwmac_clks_config(priv_plat, false); > + return ret; > } > > static const struct of_device_id mediatek_dwmac_match[] = {
Dear Matthias, Thanks for your comments. Best Regards! Biao On Fri, 2022-07-08 at 10:17 +0200, Matthias Brugger wrote: > > On 08/07/2022 09:56, Biao Huang wrote: > > Since clocks are handled in mediatek_dwmac_clks_config(), > > remove the clocks configuration in init()/exit(), and > > invoke mediatek_dwmac_clks_config instead. > > > > This issue is found in suspend/resume test. > > > > Fixes: 3186bdad97d5 ("stmmac: dwmac-mediatek: add platform level > > clocks management") > > Signed-off-by: Biao Huang <biao.huang@mediatek.com> > > --- > > .../ethernet/stmicro/stmmac/dwmac-mediatek.c | 32 ++++++------ > > ------- > > 1 file changed, 10 insertions(+), 22 deletions(-) > > > > diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > > b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > > index 6ff88df58767..6d82cf2658e0 100644 > > --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > > +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c > > @@ -576,32 +576,12 @@ static int mediatek_dwmac_init(struct > > platform_device *pdev, void *priv) > > } > > } > > > > - ret = clk_bulk_prepare_enable(variant->num_clks, plat->clks); > > - if (ret) { > > - dev_err(plat->dev, "failed to enable clks, err = %d\n", > > ret); > > - return ret; > > - } > > - > > - ret = clk_prepare_enable(plat->rmii_internal_clk); > > - if (ret) { > > - dev_err(plat->dev, "failed to enable rmii internal clk, > > err = %d\n", ret); > > - goto err_clk; > > - } > > - > > return 0; > > - > > -err_clk: > > - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); > > - return ret; > > } > > > > static void mediatek_dwmac_exit(struct platform_device *pdev, > > void *priv) > > { > > - struct mediatek_dwmac_plat_data *plat = priv; > > - const struct mediatek_dwmac_variant *variant = plat->variant; > > - > > - clk_disable_unprepare(plat->rmii_internal_clk); > > - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); > > + /* nothing to do now */ > > We can just leave the function pointer point to NULL, that get > checked before > calling exit. OK, I'll delete this function, and delete the exit assignment: plat->exit = mediatek_dwmac_exit; it should be ok since plat is allocated by devm_kzalloc. > > Regards, > Matthias > > > } > > > > static int mediatek_dwmac_clks_config(void *priv, bool enabled) > > @@ -712,13 +692,21 @@ static int mediatek_dwmac_probe(struct > > platform_device *pdev) > > mediatek_dwmac_common_data(pdev, plat_dat, priv_plat); > > mediatek_dwmac_init(pdev, priv_plat); > > > > + ret = mediatek_dwmac_clks_config(priv_plat, true); > > + if (ret) > > + return ret; > > + > > ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); > > if (ret) { > > stmmac_remove_config_dt(pdev, plat_dat); > > - return ret; > > + goto err_drv_probe; > > } > > > > return 0; > > + > > +err_drv_probe: > > + mediatek_dwmac_clks_config(priv_plat, false); > > + return ret; > > } > > > > static const struct of_device_id mediatek_dwmac_match[] = {
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c index 6ff88df58767..6d82cf2658e0 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c @@ -576,32 +576,12 @@ static int mediatek_dwmac_init(struct platform_device *pdev, void *priv) } } - ret = clk_bulk_prepare_enable(variant->num_clks, plat->clks); - if (ret) { - dev_err(plat->dev, "failed to enable clks, err = %d\n", ret); - return ret; - } - - ret = clk_prepare_enable(plat->rmii_internal_clk); - if (ret) { - dev_err(plat->dev, "failed to enable rmii internal clk, err = %d\n", ret); - goto err_clk; - } - return 0; - -err_clk: - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); - return ret; } static void mediatek_dwmac_exit(struct platform_device *pdev, void *priv) { - struct mediatek_dwmac_plat_data *plat = priv; - const struct mediatek_dwmac_variant *variant = plat->variant; - - clk_disable_unprepare(plat->rmii_internal_clk); - clk_bulk_disable_unprepare(variant->num_clks, plat->clks); + /* nothing to do now */ } static int mediatek_dwmac_clks_config(void *priv, bool enabled) @@ -712,13 +692,21 @@ static int mediatek_dwmac_probe(struct platform_device *pdev) mediatek_dwmac_common_data(pdev, plat_dat, priv_plat); mediatek_dwmac_init(pdev, priv_plat); + ret = mediatek_dwmac_clks_config(priv_plat, true); + if (ret) + return ret; + ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); if (ret) { stmmac_remove_config_dt(pdev, plat_dat); - return ret; + goto err_drv_probe; } return 0; + +err_drv_probe: + mediatek_dwmac_clks_config(priv_plat, false); + return ret; } static const struct of_device_id mediatek_dwmac_match[] = {
Since clocks are handled in mediatek_dwmac_clks_config(), remove the clocks configuration in init()/exit(), and invoke mediatek_dwmac_clks_config instead. This issue is found in suspend/resume test. Fixes: 3186bdad97d5 ("stmmac: dwmac-mediatek: add platform level clocks management") Signed-off-by: Biao Huang <biao.huang@mediatek.com> --- .../ethernet/stmicro/stmmac/dwmac-mediatek.c | 32 ++++++------------- 1 file changed, 10 insertions(+), 22 deletions(-)