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| author |  H. Nikolaus Schaller <hns@goldelico.com>
| 2017-07-03 18:37:11 +0200 |
|---|---|---|
| committer |  Sebastian Reichel <sebastian.reichel@collabora.co.uk>
| 2017-07-03 19:15:22 +0200 |
| commit | 7bb5a650f3471e4052e1692b29b0f3d3ca099c47 (patch) | |
| tree | e26ee6622ab0ea39d4552c4ccd8dfe70dcd83ef1 /drivers | |
| parent | power: supply: twl4030-charger: move irq allocation to just before irqs are e... (diff) | |
| download | linux-7bb5a650f3471e4052e1692b29b0f3d3ca099c47.tar.gz linux-7bb5a650f3471e4052e1692b29b0f3d3ca099c47.tar.bz2 linux-7bb5a650f3471e4052e1692b29b0f3d3ca099c47.zip | |
power: supply: twl4030-charger: add deferred probing for phy and iio
This fixes an issue if both this twl4030_charger driver and
phy-twl4030-usb are compiled as modules and loaded in random order.
It has been observed on GTA04 and OpenPandora devices that in worst
case the boot process hangs and in best case the AC detection fails
with a warning.
Therefore we add deferred probing checks for the usb_phy and the
iio channel for AC detection.
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/power/supply/twl4030_charger.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/drivers/power/supply/twl4030_charger.c b/drivers/power/supply/twl4030_charger.c index 9fad387e5081..9dff1b4b85fc 100644 --- a/drivers/power/supply/twl4030_charger.c +++ b/drivers/power/supply/twl4030_charger.c @@ -985,8 +985,12 @@ static int twl4030_bci_probe(struct platform_device *pdev) bci->channel_vac = devm_iio_channel_get(&pdev->dev, "vac"); if (IS_ERR(bci->channel_vac)) { + ret = PTR_ERR(bci->channel_vac); + if (ret == -EPROBE_DEFER) + return ret; /* iio not ready */ + dev_warn(&pdev->dev, "could not request vac iio channel (%d)", + ret); bci->channel_vac = NULL; - dev_warn(&pdev->dev, "could not request vac iio channel"); } if (bci->dev->of_node) { @@ -998,6 +1002,14 @@ static int twl4030_bci_probe(struct platform_device *pdev) bci->usb_nb.notifier_call = twl4030_bci_usb_ncb; bci->transceiver = devm_usb_get_phy_by_node( bci->dev, phynode, &bci->usb_nb); + if (IS_ERR(bci->transceiver)) { + ret = PTR_ERR(bci->transceiver); + if (ret == -EPROBE_DEFER) + return ret; /* phy not ready */ + dev_warn(&pdev->dev, "could not request transceiver (%d)", + ret); + bci->transceiver = NULL; + } } } |