https://github.com/torvalds/linux
Revision 61e6fe59ede155881a622f5901551b1cc8748f6a authored by Christian Eggers on 09 October 2020, 11:03:20 UTC, committed by Wolfram Sang on 02 December 2020, 20:28:20 UTC
If arbitration is lost, the master automatically changes to slave mode.
I2SR_IBB may or may not be reset by hardware. Raising a STOP condition
by resetting I2CR_MSTA has no effect and will not clear I2SR_IBB.
So calling i2c_imx_bus_busy() is not required and would busy-wait until
timeout.
Signed-off-by: Christian Eggers <ceggers@arri.de>
Tested (not extensively) on Vybrid VF500 (Toradex VF50):
Tested-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Oleksij Rempel <o.rempel@pengutronix.de>
Cc: stable@vger.kernel.org # Requires trivial backporting, simple remove
# the 3rd argument from the calls to
# i2c_imx_bus_busy().
Signed-off-by: Wolfram Sang <wsa@kernel.org>
1 parent 1de67a3
Tip revision: 61e6fe59ede155881a622f5901551b1cc8748f6a authored by Christian Eggers on 09 October 2020, 11:03:20 UTC
i2c: imx: Don't generate STOP condition if arbitration has been lost
i2c: imx: Don't generate STOP condition if arbitration has been lost
Tip revision: 61e6fe5
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