@@ -328,12 +328,6 @@ static int stu300_start_and_await_event(struct stu300_dev *dev,
{
int ret;
- if (unlikely(irqs_disabled())) {
- /* TODO: implement polling for this case if need be. */
- WARN(1, "irqs are disabled, cannot poll for event\n");
- return -EIO;
- }
-
/* Lock command issue, fill in an event we wait for */
spin_lock_irq(&dev->cmd_issue_lock);
init_completion(&dev->cmd_complete);
@@ -380,13 +374,6 @@ static int stu300_await_event(struct stu300_dev *dev,
{
int ret;
- if (unlikely(irqs_disabled())) {
- /* TODO: implement polling for this case if need be. */
- dev_err(&dev->pdev->dev, "irqs are disabled on this "
- "system!\n");
- return -EIO;
- }
-
/* Is it already here? */
spin_lock_irq(&dev->cmd_issue_lock);
dev->cmd_err = STU300_ERROR_NONE;
@@ -846,6 +833,13 @@ static int stu300_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
return num;
}
+static int stu300_xfer_todo(struct i2c_adapter *adap, struct i2c_msg *msgs, int num)
+{
+ /* TODO: implement polling for this case if need be. */
+ WARN(1, "%s: atomic transfers not implemented\n", dev_name(&adap->dev));
+ return -EOPNOTSUPP;
+}
+
static u32 stu300_func(struct i2c_adapter *adap)
{
/* This is the simplest thing you can think of... */
@@ -853,8 +847,9 @@ static u32 stu300_func(struct i2c_adapter *adap)
}
static const struct i2c_algorithm stu300_algo = {
- .master_xfer = stu300_xfer,
- .functionality = stu300_func,
+ .master_xfer = stu300_xfer,
+ .master_xfer_atomic = stu300_xfer_todo,
+ .functionality = stu300_func,
};
static const struct i2c_adapter_quirks stu300_quirks = {
Use the new callback to reject atomic transfers. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> --- drivers/i2c/busses/i2c-stu300.c | 25 ++++++++++--------------- 1 file changed, 10 insertions(+), 15 deletions(-)