Jason Cooper <jason@xxxxxxxxxxxxxx> writes: > On Fri, Feb 07, 2014 at 11:55:54AM +0100, Gregory CLEMENT wrote: >> Offload can be used only on regular transactions and for 1 to byte >> transfers. In the other cases we switch back to usual work flow. >> >> In this case we need to call mv64xxx_i2c_prepare_for_io() as this >> function is not used when we try to use offloading. >> >> This commit adds this missing call when offloading have failed in the >> MV64XXX_I2C_ACTION_OFFLOAD_SEND_START case. >> >> This fix the timeout seen when the the i2c driver try to access an >> address where the device is absent on the Armada XP bases board. >> >> Cc: stable@xxxxxxxxxxxxxxx # v3.12+ >> Fixes: 930ab3d403ae (i2c: mv64xxx: Add I2C Transaction Generator support) >> >> Signed-off-by: Gregory CLEMENT <gregory.clement@xxxxxxxxxxxxxxxxxx> >> --- >> drivers/i2c/busses/i2c-mv64xxx.c | 9 ++++++++- >> 1 file changed, 8 insertions(+), 1 deletion(-) > > I'd like to get a few tested-by's on this before this is pushed. We've > had quite a bit of fixes this round :( Please test both multi_v7 and > mvebu defconfigs. > > Kevin, I know you're busy with a lot more than us, but if you could > confirm that this fixes the bus hangs you reported, that would be great. I applied this patch on top of next-20140207 and tested this on the armada-xp openblocks ax3, which is where I was seeing the I2C timeouts. I confirm it fixes the timeouts I was seeing. Tested-by: Kevin Hilman <khilman@xxxxxxxxxx> Kevin -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
