linux

iv/linux

History

Russell King c25e509aef i2c: pxa: avoid complaints with non-responsive slaves

Running i2cdetect on a PXA I2C adapter is very noisy; it complains
whenever a slave fails to respond to the address cycle.  Since it is
normal to probe for slaves in this way, we should not fill the kernel
log.  This is especially true with SFP modules that take a while to
respond on the I2C bus, and probing via the I2C bus is the only way to
detect that they are ready.

Fix this by changing the internal transfer return code from I2C_RETRY
to a new NO_SLAVE code (mapped to -ENXIO, as per the I2C documentation
for this condition, but we still return -EREMOTEIO to the I2C stack to
maintain long established driver behaviour.)

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Wolfram Sang <wsa@kernel.org>

2020-05-12 12:32:31 +02:00

algos

i2c: algo: Use generic definitions for bus frequencies

2020-03-24 22:00:05 +01:00

busses

i2c: pxa: avoid complaints with non-responsive slaves

2020-05-12 12:32:31 +02:00

muxes

i2c: mux: pca954x: Convert license to SPDX identifier

2020-05-11 21:23:23 +02:00

i2c-boardinfo.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 157