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authorJean Delvare <jdelvare@suse.de>2011-10-30 12:47:25 (GMT)
committerJean Delvare <khali@endymion.delvare>2011-10-30 12:47:25 (GMT)
commitf6beb67d8e77454200acc3755344944bd946cded (patch)
treec62f448caba0faf186bd3076970c19ffef39de1a
parent1bddab7f7d5b61f17b0bbd669f60818d553620be (diff)
i2c-algo-bit: Be verbose on bus testing failure
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>
-rw-r--r--drivers/i2c/algos/i2c-algo-bit.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
index 66bebfc..c20530a 100644
--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -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;
}

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