Re: [PATCH/RFC 4/6] spi: slave: Add SPI slave handler reporting boot up time

On Wed, Jun 22, 2016 at 03:42:07PM +0200, Geert Uytterhoeven wrote: > Add an SPI slave handler responding with the time of reception of the > last SPI message. > > This can be used by an external microcontroller as a dead man's switch. The subject says boot up time, this says time of reception of

[PATCH/RFC 4/6] spi: slave: Add SPI slave handler reporting boot up time

Add an SPI slave handler responding with the time of reception of the last SPI message. This can be used by an external microcontroller as a dead man's switch. Signed-off-by: Geert Uytterhoeven --- FIXME kthread_stop() hangs, as spi_write() is blocked on a completion --- drivers/spi/Kconfig