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[PATCH] i2c-powermac: Fix master_xfer return value

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Fix the value returned by the i2c-powermac's master_xfer method.
It should return the number of messages processed successfully, but
instead returns the number of data bytes in the first (and only)
processed message.

Also explicitly mention the master_xfer convention so that future
implementations get it right directly.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Jean Delvare
2006-07-01 17:12:53 +02:00
committed by Greg Kroah-Hartman
parent c3efacaa68
commit 8ced8eee85
2 changed files with 3 additions and 3 deletions
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4
drivers/i2c/busses/i2c-powermac.c
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@@ -148,8 +148,6 @@ static int i2c_powermac_master_xfer( struct i2c_adapter *adap,
int read;
int addrdir;
if (num != 1)
return -EINVAL;
if (msgs->flags & I2C_M_TEN)
return -EINVAL;
read = (msgs->flags & I2C_M_RD) != 0;
@@ -166,7 +164,7 @@ static int i2c_powermac_master_xfer( struct i2c_adapter *adap,
rc = pmac_i2c_xfer(bus, addrdir, 0, 0, msgs->buf, msgs->len);
bail:
pmac_i2c_close(bus);
return rc < 0 ? rc : msgs->len;
return rc < 0 ? rc : 1;
}
static u32 i2c_powermac_func(struct i2c_adapter * adapter)