Messages in this thread | | | Date | Thu, 8 Jan 2009 12:19:44 +0000 | From | Ben Dooks <> | Subject | Re: [PATCH 2/3] Driver for user access to internal clocks |
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On Thu, Jan 08, 2009 at 10:50:03AM +0100, Davide Rizzo wrote: > Specific for Samsung S3C24xx platforms > Allows any driver to get a device specific clock. > It recognizes also the form clkname.X > > Signed-off-by: Davide Rizzo <elpa-rizzo@gmail.com> > --- > diff -urNp linux-2.6.28/arch/arm/plat-s3c24xx/clock.c > linux-2.6.28.elpa/arch/arm/plat-s3c24xx/clock.c > --- linux-2.6.28/arch/arm/plat-s3c24xx/clock.c 2008-12-25 > 00:26:37.000000000 +0100 > +++ linux-2.6.28.elpa/arch/arm/plat-s3c24xx/clock.c 2009-01-07 > 19:25:07.000000000 +0100 > @@ -67,11 +67,19 @@ static int clk_null_enable(struct clk *c > > struct clk *clk_get(struct device *dev, const char *id) > { > + long idno; > + char *name = (char *)id; > + char *dotpos = strrchr(id, '.');
you've borken the const of the clk_get() call. I think that this is either something that the caller needs to deal with as all the drivers will be passing a 'dev' structure in to help identify common clocks.
> struct clk *p; > struct clk *clk = ERR_PTR(-ENOENT); > - int idno; > > - if (dev == NULL || dev->bus != &platform_bus_type) > + if (dotpos) { > + int err = strict_strtol(dotpos + 1, 10, &idno); > + if (err) > + return ERR_PTR(err); > + name = kstrdup(id, GFP_KERNEL); > + name[dotpos - id] = '\0'; > + } else if (dev == NULL || dev->bus != &platform_bus_type) > idno = -1; > else > idno = to_platform_device(dev)->id; > @@ -80,7 +88,7 @@ struct clk *clk_get(struct device *dev, > > list_for_each_entry(p, &clocks, list) { > if (p->id == idno && > - strcmp(id, p->name) == 0 && > + strcmp(name, p->name) == 0 && > try_module_get(p->owner)) { > clk = p; > break; > @@ -92,7 +100,7 @@ struct clk *clk_get(struct device *dev, > > if (IS_ERR(clk)) { > list_for_each_entry(p, &clocks, list) { > - if (p->id == -1 && strcmp(id, p->name) == 0 && > + if (p->id == -1 && strcmp(name, p->name) == 0 && > try_module_get(p->owner)) { > clk = p; > break; > @@ -101,6 +109,9 @@ struct clk *clk_get(struct device *dev, > } > > mutex_unlock(&clocks_mutex); > + > + if (dotpos) > + kfree(name); > return clk; > } > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/
-- Ben (ben@fluff.org, http://www.fluff.org/)
'a smiley only costs 4 bytes'
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