Marek Vasut wrote: > Dne Út 23. března 2010 02:39:19 Graham Gower napsal(a): >> The ucb1400_core is registered with driver_register. >> >> I have grepped my tree and the only places I see "ucb12400_core" are in a >> couple of arm board files and in my board file. Mine is commented out, and >> I definitely still get the probe being called. >> >> I added dump_stack() to the probe function. >> >> [<80014f50>] dump_stack+0x8/0x34 >> [<801b1dec>] ucb1400_core_probe+0x48/0x1ac >> [<801ab114>] driver_probe_device+0x128/0x254 >> [<801aa440>] bus_for_each_drv+0x60/0xb0 >> [<801ab3e4>] device_attach+0x60/0x88 >> [<801aa234>] bus_probe_device+0x30/0x54 >> [<801a8a74>] device_add+0x368/0x4f0 >> [<80210970>] snd_ac97_dev_register+0xa0/0xd8 >> [<801ef6e8>] snd_device_register_all+0x44/0x80 >> [<801eb2f4>] snd_card_register+0x64/0x18c >> [<80216f3c>] snd_soc_instantiate_cards+0x368/0x5c4 >> [<80217214>] soc_probe+0x7c/0xc4 >> [<801ab114>] driver_probe_device+0x128/0x254 >> [<801aa440>] bus_for_each_drv+0x60/0xb0 >> [<801ab3e4>] device_attach+0x60/0x88 >> [<801aa234>] bus_probe_device+0x30/0x54 >> [<801a8a74>] device_add+0x368/0x4f0 >> [<801aca5c>] platform_device_add+0x14c/0x1b8 >> [<803813a4>] quokka_init+0x98/0xec >> [<800180f0>] do_one_initcall+0x68/0x200 >> [<80371328>] kernel_init+0xc4/0x164 >> [<8001ac2c>] kernel_thread_helper+0x10/0x18 > > Aren't you probing it from some driver or something ? I register an ac97 platform driver from an arch_initcall function. It looks like the ucb1400_core driver is probed once the ac97 device is found. >> This has nothing to do with the irq number that I'm passing (which is not >> 123 anyway). The ucb1400_core's dev->platform_data pointer is NULL. > > We know it is NULL ... that's because you're not passing it. When I attempt to pass it via a platform device with platform_add_devices, it is still NULL. I suspected that it was NULL because the ucb1400_core isn't a platform_driver - thus I commented out the platform device for ucb1400_core in my arch_initcall and sure enough the probe was still being called. -Graham -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
