From: "Tjernlund" <tjernlund@tjernlund.se>
To: <i2c@lm-sensors.org>
Cc: linuxppc-dev@ozlabs.org
Subject: i2c-mpc.c driver issues
Date: Wed, 24 Oct 2007 23:06:13 +0200 [thread overview]
Message-ID: <019001c81681$b5d449c0$5267a8c0@Jocke> (raw)
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
does.
/* Generate stop on last byte */
if (i == length - 1)
writeccr(i2c, CCR_MIEN | CCR_MEN | CCR_TXAK);
Jocke
next reply other threads:[~2007-10-24 21:38 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-10-24 21:06 Tjernlund [this message]
2007-10-24 22:44 ` i2c-mpc.c driver issues Jon Smirl
2007-10-26 9:53 ` [i2c] " Jean Delvare
2007-10-26 11:21 ` Joakim Tjernlund
2007-10-27 20:52 ` Joakim Tjernlund
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