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authorJean Delvare <jdelvare@suse.de>2011-10-30 13:47:25 +0100
committerJean Delvare <khali@endymion.delvare>2011-10-30 13:47:25 +0100
commitf6beb67d8e77454200acc3755344944bd946cded (patch)
treec62f448caba0faf186bd3076970c19ffef39de1a /drivers
parent1bddab7f7d5b61f17b0bbd669f60818d553620be (diff)
downloadlwn-f6beb67d8e77454200acc3755344944bd946cded.tar.gz
lwn-f6beb67d8e77454200acc3755344944bd946cded.zip
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>
Diffstat (limited to 'drivers')
-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 66bebfc81c22..c20530a98ca3 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;
}