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authorChristian Eggers <ceggers@arri.de>2020-10-09 14:03:20 +0300
committerWolfram Sang <wsa@kernel.org>2020-12-02 23:28:20 +0300
commit61e6fe59ede155881a622f5901551b1cc8748f6a (patch)
tree862c85c425fc9500c197b9b5b3f39fabead5aab5 /lib/test_stackinit.c
parent1de67a3dee7a279ebe4d892b359fe3696938ec15 (diff)
downloadlinux-61e6fe59ede155881a622f5901551b1cc8748f6a.tar.xz
i2c: imx: Don't generate STOP condition if arbitration has been lost
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>
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