Michael Welling <mwell...@ieee.org> writes: > On Sun, Feb 14, 2016 at 02:59:06PM +0800, kernel test robot wrote: >> FYI, we noticed the below changes on >> >> https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git chardev >> commit 3c702e9987e261042a07e43460a8148be254412e ("gpio: add a userspace >> chardev ABI for GPIOs") >> >> >> [ 1.951191] user_verbs: couldn't register device number > > Looks like user_verbs is using a static device node setup. > > enum { > IB_UVERBS_MAJOR = 231, > IB_UVERBS_BASE_MINOR = 192, > IB_UVERBS_MAX_DEVICES = 32 > }; > > #define IB_UVERBS_BASE_DEV MKDEV(IB_UVERBS_MAJOR, IB_UVERBS_BASE_MINOR) > > Something tells me that a new GPIO chardev is taking this spot. > > It looks like the device is documented to be using the range: > https://www.kernel.org/doc/Documentation/devices.txt > > Could you run cat /proc/devices? >
Sorry, the test mechanism is not flexible enough to run some shell command in test system. Could you provide a specialized debug kernel to dump the necessary information in kernel log? We can collect dmesg easily. Best Regards, Huang, Ying