Hi, SDP4430 uses a SPI based network chip ks8851. next-20150508: https://github.com/nmenon/kernel-test-logs/blob/next-20150508/omap2plus_defconfig/sdp4430.txt However, next-20150511: https://github.com/nmenon/kernel-test-logs/blob/next-20150511/omap2plus_defconfig/sdp4430.txt Generates infinite "ks8851 spi1.0: ks8851_irq: spi bus error" errors and hangs the platform. Bisected the issue down to the following two commits when reverted allows the board to function: commit b28cb9414db9f8e42ac18c9e360e4e99cda42489 Author: Michael Welling <mwelling@xxxxxxxx> Date: Thu May 7 18:36:53 2015 -0500 spi: omap2-mcspi: Switch driver to use transfer_one Switches from transfer_one_message to transfer_one to prepare driver for use of GPIO chip selects. Signed-off-by: Michael Welling <mwelling@xxxxxxxx> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Reverting this alone: http://paste.ubuntu.org.cn/2594735 (did not boot up) commit bc7f9bbc80bcc77745b3f54ec4e7103e3e142bb9 Author: Michael Welling <mwelling@xxxxxxxx> Date: Fri May 8 13:31:01 2015 -0500 spi: omap2-mcspi: Add gpio_request and init CS If GPIO chip select is specified, request the GPIO in the setup function and release it in the cleanup function. Signed-off-by: Michael Welling <mwelling@xxxxxxxx> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Reverting this as well allowed boot. -- Regards, Nishanth Menon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
