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Chris Packham
a74c313aca
Maxime points out that the polling code in mpc_i2c_isr should use the
_atomic API because it is called in an irq context and that the
behaviour of the MCF bit is that it is 1 when the byte transfer is
complete. All of this means the original code was effectively a
udelay(100).
Fix this by using readb_poll_timeout_atomic() and removing the negation
of the break condition.
Fixes: 4a8ac5e45c ("i2c: mpc: Poll for MCF")
Reported-by: Maxime Bizon <[email protected]>
Signed-off-by: Chris Packham <[email protected]>
Tested-by: Maxime Bizon <[email protected]>
Signed-off-by: Wolfram Sang <[email protected]>