Re: [PATCH v2 5/5] net: dsa: exit probe if no switch were found
On 10/03/2015 09:27 PM, Florian Fainelli wrote: > Le 03/10/2015 07:26, Neil Armstrong a écrit : >> If no switch were found in dsa_setup_dst, return -ENODEV and >> exit the dsa_probe cleanly. >> >> Tested-by: Andrew Lunn>> Tested-by: Florian Fainelli >> Signed-off-by: Neil Armstrong >> --- > > [snip] > >> static int dsa_probe(struct platform_device *pdev) >> @@ -926,9 +937,9 @@ static int dsa_probe(struct platform_device *pdev) >> >> platform_set_drvdata(pdev, dst); >> >> -dsa_setup_dst(dst, dev, >dev, pd); >> - >> -return 0; >> +ret = dsa_setup_dst(dst, dev, >dev, pd); >> +if (!ret) >> +return 0; > > That logic is a little weird, I would just go with something like this: > > ret = dsa_setup_dst(ds, dev, >dev, pd); > if (ret) > goto out; > > return 0; > Yes you are right, the goto out is needed to clean up the of_probe resources. I will send a v3 with this fixed. Neil -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[PATCH v2 5/5] net: dsa: exit probe if no switch were found
If no switch were found in dsa_setup_dst, return -ENODEV and exit the dsa_probe cleanly. Tested-by: Andrew LunnTested-by: Florian Fainelli Signed-off-by: Neil Armstrong --- net/dsa/dsa.c | 19 +++ 1 file changed, 15 insertions(+), 4 deletions(-) diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c index dd171ff..9c521b7 100644 --- a/net/dsa/dsa.c +++ b/net/dsa/dsa.c @@ -836,10 +836,11 @@ static inline void dsa_of_remove(struct device *dev) } #endif -static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, +static int dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, struct device *parent, struct dsa_platform_data *pd) { int i; + unsigned configured = 0; dst->pd = pd; dst->master_netdev = dev; @@ -859,9 +860,17 @@ static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, dst->ds[i] = ds; if (ds->drv->poll_link != NULL) dst->link_poll_needed = 1; + + ++configured; } /* +* If no switch was found, exit cleanly +*/ + if (!configured) + return -EPROBE_DEFER; + + /* * If we use a tagging format that doesn't have an ethertype * field, make sure that all packets from this point on get * sent to the tag format's receive function. @@ -877,6 +886,8 @@ static void dsa_setup_dst(struct dsa_switch_tree *dst, struct net_device *dev, dst->link_poll_timer.expires = round_jiffies(jiffies + HZ); add_timer(>link_poll_timer); } + + return 0; } static int dsa_probe(struct platform_device *pdev) @@ -926,9 +937,9 @@ static int dsa_probe(struct platform_device *pdev) platform_set_drvdata(pdev, dst); - dsa_setup_dst(dst, dev, >dev, pd); - - return 0; + ret = dsa_setup_dst(dst, dev, >dev, pd); + if (!ret) + return 0; out: dsa_of_remove(>dev); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Re: [PATCH v2 5/5] net: dsa: exit probe if no switch were found
Le 03/10/2015 07:26, Neil Armstrong a écrit : > If no switch were found in dsa_setup_dst, return -ENODEV and > exit the dsa_probe cleanly. > > Tested-by: Andrew Lunn> Tested-by: Florian Fainelli > Signed-off-by: Neil Armstrong > --- [snip] > static int dsa_probe(struct platform_device *pdev) > @@ -926,9 +937,9 @@ static int dsa_probe(struct platform_device *pdev) > > platform_set_drvdata(pdev, dst); > > - dsa_setup_dst(dst, dev, >dev, pd); > - > - return 0; > + ret = dsa_setup_dst(dst, dev, >dev, pd); > + if (!ret) > + return 0; That logic is a little weird, I would just go with something like this: ret = dsa_setup_dst(ds, dev, >dev, pd); if (ret) goto out; return 0; -- Florian -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html