On Mon, 7 Apr 2014 12:11:15 -0500, Josh Cartwright <joshc@xxxxxxxxxxxxxx> wrote: > On Mon, Apr 07, 2014 at 04:00:43PM +0800, Tien Hock Loh wrote: > > On Wed, Mar 19, 2014 at 6:09 PM, Tien Hock Loh <thloh@xxxxxxxxxx> wrote: > > > On Fri, Mar 7, 2014 at 11:14 PM, Josh Cartwright <joshc@xxxxxxxxxxxxxx> wrote: > > >> On Mon, Mar 03, 2014 at 06:27:43PM +0800, thloh@xxxxxxxxxx wrote: > > >>> From: Tien Hock Loh <thloh@xxxxxxxxxx> > [..] > > >>> + altera_gc->mapped_irq = irq_of_parse_and_map(node, 0); > > >>> > > >> > > >> platform_get_irq(pdev, 0); > > >> > > > OK. > > > > > > > platform_get_irq doesn't create the irq mapping which is needed by the > > driver. Since this driver is targeted at using of, should I be using > > irq_of_parse_and_map or should I still redo the codes with > > platform_get_irq and irq_create_mapping? I think the latter would be > > introducing code redundancy. Please advice. > > Yes, it is technically true that platform_get_irq() doesn't do the > mapping directly, but that's because the mapping is setup earlier, when > of_device_alloc() (drivers/of/platform.c) allocates resources for your > platform device. > > Calling irq_of_parse_and_map() should be unnecessary. In the latest mainline, platform_get_irq() now does the mapping when using an IRQ specified in the device tree. g. -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
