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author | Christian Eggers <ceggers@arri.de> | 2020-10-09 14:03:20 +0300 |
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committer | Wolfram Sang <wsa@kernel.org> | 2020-12-02 23:28:20 +0300 |
commit | 61e6fe59ede155881a622f5901551b1cc8748f6a (patch) | |
tree | 862c85c425fc9500c197b9b5b3f39fabead5aab5 /lib/test_stackinit.c | |
parent | 1de67a3dee7a279ebe4d892b359fe3696938ec15 (diff) | |
download | linux-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>
Diffstat (limited to 'lib/test_stackinit.c')
0 files changed, 0 insertions, 0 deletions