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i2c-algo-bit: Be verbose on bus testing failure

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If bus testing fails due to the bus being seen as busy, it might be
helpful for developers to know which line is unexpectedly low.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Reviewed-by: Alex Deucher <alexdeucher@gmail.com>
This commit is contained in:
Jean Delvare 2011-10-30 13:47:25 +01:00 committed by Jean Delvare
parent 1bddab7f7d
commit f6beb67d8e
1 changed files with 3 additions and 1 deletions
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4
drivers/i2c/algos/i2c-algo-bit.c
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@ -250,7 +250,9 @@ static int test_bus(struct i2c_adapter *i2c_adap)
sda = getsda(adap);
scl = (adap->getscl == NULL) ? 1 : getscl(adap);
if (!scl || !sda) {
printk(KERN_WARNING "%s: bus seems to be busy\n", name);
printk(KERN_WARNING
"%s: bus seems to be busy (scl=%d, sda=%d)\n",
name, scl, sda);
goto bailout;
}