diff options
| -rw-r--r-- | drivers/i2c/i2c-core-base.c | 5 | ||||
| -rw-r--r-- | include/linux/i2c.h | 3 |
2 files changed, 6 insertions, 2 deletions
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c index 4e6300dc2c4e..f8e85983cb04 100644 --- a/drivers/i2c/i2c-core-base.c +++ b/drivers/i2c/i2c-core-base.c @@ -1867,8 +1867,11 @@ int __i2c_transfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) if (WARN_ON(!msgs || num < 1)) return -EINVAL; - if (WARN_ON(test_bit(I2C_ALF_IS_SUSPENDED, &adap->locked_flags))) + if (test_bit(I2C_ALF_IS_SUSPENDED, &adap->locked_flags)) { + if (!test_and_set_bit(I2C_ALF_SUSPEND_REPORTED, &adap->locked_flags)) + dev_WARN(&adap->dev, "Transfer while suspended\n"); return -ESHUTDOWN; + } if (adap->quirks && i2c_check_for_quirks(adap, msgs, num)) return -EOPNOTSUPP; diff --git a/include/linux/i2c.h b/include/linux/i2c.h index 03755d4c9229..be27062f8ed1 100644 --- a/include/linux/i2c.h +++ b/include/linux/i2c.h @@ -694,7 +694,8 @@ struct i2c_adapter { int retries; struct device dev; /* the adapter device */ unsigned long locked_flags; /* owned by the I2C core */ -#define I2C_ALF_IS_SUSPENDED 0 +#define I2C_ALF_IS_SUSPENDED 0 +#define I2C_ALF_SUSPEND_REPORTED 1 int nr; char name[48]; |