| Message ID | 20210208135609.7685-17-Sergey.Semin@baikalelectronics.ru (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | net: stmmac: Fix clocks/reset-related procedures | expand |
Hi, On Mon, 8 Feb 2021 16:56:00 +0300 Serge Semin wrote: > > Since commit bb3222f71b57 ("net: stmmac: platform: use optional clk/reset > get APIs") a manual implementation of the optional device reset control > functionality has been replaced with using the > devm_reset_control_get_optional() method. But for some reason the optional > reset control handler usage hasn't been fixed and preserved the > NULL-checking statements. There is no need in that in order to perform the > reset control assertion/deassertion because the passed NULL will be > considered by the reset framework as absent optional reset control handler > anyway. > > Fixes: bb3222f71b57 ("net: stmmac: platform: use optional clk/reset get APIs") The patch itself looks good, but the Fix tag isn't necessary since the patch is a clean up rather than a bug fix. Can you please drop it in next version? Thanks > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> > --- > .../net/ethernet/stmicro/stmmac/stmmac_main.c | 19 ++++++++----------- > 1 file changed, 8 insertions(+), 11 deletions(-) > > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > index 4f1bf8f6538b..a8dec219c295 100644 > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > @@ -4935,15 +4935,13 @@ int stmmac_dvr_probe(struct device *device, > if ((phyaddr >= 0) && (phyaddr <= 31)) > priv->plat->phy_addr = phyaddr; > > - if (priv->plat->stmmac_rst) { > - ret = reset_control_assert(priv->plat->stmmac_rst); > - reset_control_deassert(priv->plat->stmmac_rst); > - /* Some reset controllers have only reset callback instead of > - * assert + deassert callbacks pair. > - */ > - if (ret == -ENOTSUPP) > - reset_control_reset(priv->plat->stmmac_rst); > - } > + ret = reset_control_assert(priv->plat->stmmac_rst); > + reset_control_deassert(priv->plat->stmmac_rst); > + /* Some reset controllers have only reset callback instead of > + * assert + deassert callbacks pair. > + */ > + if (ret == -ENOTSUPP) > + reset_control_reset(priv->plat->stmmac_rst); > > /* Init MAC and get the capabilities */ > ret = stmmac_hw_init(priv); > @@ -5155,8 +5153,7 @@ int stmmac_dvr_remove(struct device *dev) > stmmac_exit_fs(ndev); > #endif > phylink_destroy(priv->phylink); > - if (priv->plat->stmmac_rst) > - reset_control_assert(priv->plat->stmmac_rst); > + reset_control_assert(priv->plat->stmmac_rst); > if (priv->hw->pcs != STMMAC_PCS_TBI && > priv->hw->pcs != STMMAC_PCS_RTBI) > stmmac_mdio_unregister(ndev); > -- > 2.29.2 >
On Wed, Feb 10, 2021 at 02:49:24PM +0800, Jisheng Zhang wrote: > Hi, > > On Mon, 8 Feb 2021 16:56:00 +0300 Serge Semin wrote: > > > > > > Since commit bb3222f71b57 ("net: stmmac: platform: use optional clk/reset > > get APIs") a manual implementation of the optional device reset control > > functionality has been replaced with using the > > devm_reset_control_get_optional() method. But for some reason the optional > > reset control handler usage hasn't been fixed and preserved the > > NULL-checking statements. There is no need in that in order to perform the > > reset control assertion/deassertion because the passed NULL will be > > considered by the reset framework as absent optional reset control handler > > anyway. > > > > Fixes: bb3222f71b57 ("net: stmmac: platform: use optional clk/reset get APIs") > > The patch itself looks good, but the Fix tag isn't necessary since the > patch is a clean up rather than a bug fix. Can you please drop it in next > version? Ok. I'll remove it. -Sergey > > Thanks > > > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> > > --- > > .../net/ethernet/stmicro/stmmac/stmmac_main.c | 19 ++++++++----------- > > 1 file changed, 8 insertions(+), 11 deletions(-) > > > > diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > > index 4f1bf8f6538b..a8dec219c295 100644 > > --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > > +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c > > @@ -4935,15 +4935,13 @@ int stmmac_dvr_probe(struct device *device, > > if ((phyaddr >= 0) && (phyaddr <= 31)) > > priv->plat->phy_addr = phyaddr; > > > > - if (priv->plat->stmmac_rst) { > > - ret = reset_control_assert(priv->plat->stmmac_rst); > > - reset_control_deassert(priv->plat->stmmac_rst); > > - /* Some reset controllers have only reset callback instead of > > - * assert + deassert callbacks pair. > > - */ > > - if (ret == -ENOTSUPP) > > - reset_control_reset(priv->plat->stmmac_rst); > > - } > > + ret = reset_control_assert(priv->plat->stmmac_rst); > > + reset_control_deassert(priv->plat->stmmac_rst); > > + /* Some reset controllers have only reset callback instead of > > + * assert + deassert callbacks pair. > > + */ > > + if (ret == -ENOTSUPP) > > + reset_control_reset(priv->plat->stmmac_rst); > > > > /* Init MAC and get the capabilities */ > > ret = stmmac_hw_init(priv); > > @@ -5155,8 +5153,7 @@ int stmmac_dvr_remove(struct device *dev) > > stmmac_exit_fs(ndev); > > #endif > > phylink_destroy(priv->phylink); > > - if (priv->plat->stmmac_rst) > > - reset_control_assert(priv->plat->stmmac_rst); > > + reset_control_assert(priv->plat->stmmac_rst); > > if (priv->hw->pcs != STMMAC_PCS_TBI && > > priv->hw->pcs != STMMAC_PCS_RTBI) > > stmmac_mdio_unregister(ndev); > > -- > > 2.29.2 > > >
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index 4f1bf8f6538b..a8dec219c295 100644 --- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -4935,15 +4935,13 @@ int stmmac_dvr_probe(struct device *device, if ((phyaddr >= 0) && (phyaddr <= 31)) priv->plat->phy_addr = phyaddr; - if (priv->plat->stmmac_rst) { - ret = reset_control_assert(priv->plat->stmmac_rst); - reset_control_deassert(priv->plat->stmmac_rst); - /* Some reset controllers have only reset callback instead of - * assert + deassert callbacks pair. - */ - if (ret == -ENOTSUPP) - reset_control_reset(priv->plat->stmmac_rst); - } + ret = reset_control_assert(priv->plat->stmmac_rst); + reset_control_deassert(priv->plat->stmmac_rst); + /* Some reset controllers have only reset callback instead of + * assert + deassert callbacks pair. + */ + if (ret == -ENOTSUPP) + reset_control_reset(priv->plat->stmmac_rst); /* Init MAC and get the capabilities */ ret = stmmac_hw_init(priv); @@ -5155,8 +5153,7 @@ int stmmac_dvr_remove(struct device *dev) stmmac_exit_fs(ndev); #endif phylink_destroy(priv->phylink); - if (priv->plat->stmmac_rst) - reset_control_assert(priv->plat->stmmac_rst); + reset_control_assert(priv->plat->stmmac_rst); if (priv->hw->pcs != STMMAC_PCS_TBI && priv->hw->pcs != STMMAC_PCS_RTBI) stmmac_mdio_unregister(ndev);
Since commit bb3222f71b57 ("net: stmmac: platform: use optional clk/reset get APIs") a manual implementation of the optional device reset control functionality has been replaced with using the devm_reset_control_get_optional() method. But for some reason the optional reset control handler usage hasn't been fixed and preserved the NULL-checking statements. There is no need in that in order to perform the reset control assertion/deassertion because the passed NULL will be considered by the reset framework as absent optional reset control handler anyway. Fixes: bb3222f71b57 ("net: stmmac: platform: use optional clk/reset get APIs") Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> --- .../net/ethernet/stmicro/stmmac/stmmac_main.c | 19 ++++++++----------- 1 file changed, 8 insertions(+), 11 deletions(-)