Hi, some i2c bus drivers are checking if a signal is pending and aborting a current i2c transfer. This seems reasonable to go back to userland as fast as possible. But yesterday I tried to run a simple 'cat' command on a device node which does its transfers via an i2c bus. When the command receives a SIGINT, someone (kernel? glibc?) closes the open file descriptor. This calls the device's close routine, but as this point of time the signal is still pending and no further i2c communication is possible ... the driver fails to shutdown the i2c device. What is the correct or expected behaviour of an i2c bus driver when a signal is pending?
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