[i2c] i2c-mpc.c driver issues
tjernlund at tjernlund.se
Wed Oct 24 23:06:13 CEST 2007
While browsing the i2c-mpc.c driver I noticed some things that look odd
to me so I figured I report them. Could not find a maintainer in the MAINTANERS file
so I sent here, cc:ed linuxppc-dev as well.
1) There are a lot of return -1 error code that is propagated back to
userspace. Should be changed to proper -Exxx codes.
2) mpc_read(), according to the comment below it sends a STOP condition here but
this function does not known if this is the last read or not. mpc_xfer is
the one that knows when the transaction is over and should send the stop, which it already
/* Generate stop on last byte */
if (i == length - 1)
writeccr(i2c, CCR_MIEN | CCR_MEN | CCR_TXAK);
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