diff options
| author | Andy Gross <agross@codeaurora.org> | 2014-09-30 00:00:51 +0200 |
|---|---|---|
| committer | Wolfram Sang <wsa@the-dreams.de> | 2014-10-03 03:20:47 +0200 |
| commit | 86b59bbfae2a895aa26b3d15f31b1a705dbfede1 (patch) | |
| tree | 83f5493517b86e852c97faa13f7403c950617e5d /drivers/i2c/busses/i2c-qup.c | |
| parent | i2c: rk3x: fix 0 length write transfers (diff) | |
| download | linux-86b59bbfae2a895aa26b3d15f31b1a705dbfede1.tar.xz linux-86b59bbfae2a895aa26b3d15f31b1a705dbfede1.zip | |
i2c: qup: Fix order of runtime pm initialization
The runtime pm calls need to be done before populating the children via the
i2c_add_adapter call. If this is not done, a child can run into issues trying
to do i2c read/writes due to the pm_runtime_sync failing.
Signed-off-by: Andy Gross <agross@codeaurora.org>
Reviewed-by: Felipe Balbi <balbi@ti.com>
Acked-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Cc: stable@kernel.org
Diffstat (limited to 'drivers/i2c/busses/i2c-qup.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-qup.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c index 3a4d64e1dfb1..092d89bd3224 100644 --- a/drivers/i2c/busses/i2c-qup.c +++ b/drivers/i2c/busses/i2c-qup.c @@ -674,16 +674,20 @@ static int qup_i2c_probe(struct platform_device *pdev) qup->adap.dev.of_node = pdev->dev.of_node; strlcpy(qup->adap.name, "QUP I2C adapter", sizeof(qup->adap.name)); - ret = i2c_add_adapter(&qup->adap); - if (ret) - goto fail; - pm_runtime_set_autosuspend_delay(qup->dev, MSEC_PER_SEC); pm_runtime_use_autosuspend(qup->dev); pm_runtime_set_active(qup->dev); pm_runtime_enable(qup->dev); + + ret = i2c_add_adapter(&qup->adap); + if (ret) + goto fail_runtime; + return 0; +fail_runtime: + pm_runtime_disable(qup->dev); + pm_runtime_set_suspended(qup->dev); fail: qup_i2c_disable_clocks(qup); return ret; |