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| author | Wolfram Sang <wsa+renesas@sang-engineering.com> | 2019-04-03 14:40:17 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2019-04-16 13:08:16 +0200 |
| commit | 252fa60e7054d22c039757d3ef72191d4eb58577 (patch) | |
| tree | 6ea3986079e67c8be9889746beeecf5fe8f9509f /drivers/i2c | |
| parent | 3d11a12ece85bc29a80a111a0f8b5498f9831d9f (diff) | |
| download | linux-252fa60e7054d22c039757d3ef72191d4eb58577.tar.gz linux-252fa60e7054d22c039757d3ef72191d4eb58577.tar.bz2 linux-252fa60e7054d22c039757d3ef72191d4eb58577.zip | |
i2c: stu300: use xfer_atomic callback to bail out early
Use the new callback to reject atomic transfers.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
| -rw-r--r-- | drivers/i2c/busses/i2c-stu300.c | 25 |
1 files changed, 10 insertions, 15 deletions
diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c index 5503fa171df0..743c161b22c5 100644 --- a/drivers/i2c/busses/i2c-stu300.c +++ b/drivers/i2c/busses/i2c-stu300.c @@ -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 = { |