This patch series is an attempt to solve the recent issues with udev-182 and media drivers. The .probe() callback should "bind the driver to a given device. That includes verifying that the device is present, that it's a version the driver can handle, that driver data structures can be allocated and initialized, and that any hardware can be initialized". In order to comply witht he above, sometimes firmware is needed. However, PM and udev have problems with that. Newer versions of request_firmware block firmware load on some situations, due to PM. Also, udev simply refuses to load firmware when module_init doesn't finish, and .probe() can be called during USB/PCI bus register, if the device is plugged. This patch series consists of 4 patches: 1) a change at kmod, in order to export the information that userspace mode is disabled; 2) a patch at em28xx that defers probe() if firmware is needed and userspace mode is disabled; 3) a workaround due to udev-182 limitation of not loading firmware while a driver is modprobed; 4) a patch for tuner-xc2028, in order to indicate what firmware files are used there. I was hoping that dracut-018-40.git20120522.fc17.noarch would get the MODULE_FIRMWARE info while creating the initfs filesystem, copying there the right firmwares, but, unfortunately, this didn't work (at least while copiling tuners as builtin). Maybe will would honour it if I re-compile everything as module and force dracut to load em28xx at init time. Comments? Regards, Mauro Mauro Carvalho Chehab (4): kmod: add a routine to return if usermode is disabled em28xx: defer probe() if udev is not ready to request_firmware em28xx: Workaround for new udev versions tuner-xc2028: tag the usual firmwares to help dracut drivers/media/common/tuners/tuner-xc2028.c | 2 + drivers/media/video/em28xx/em28xx-cards.c | 73 +++++++++++++++++++++++++++- drivers/media/video/em28xx/em28xx.h | 1 + include/linux/firmware.h | 6 +++ kernel/kmod.c | 6 +++ 5 files changed, 87 insertions(+), 1 deletion(-) -- 1.7.10.2 -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
