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| author |   Jon Hunter <jonathanh@nvidia.com> | 2016-06-16 16:27:41 +0100 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2016-06-18 10:40:15 +0200 |
| commit | 98849fa0163e755ef2c4565c814bf08ffb5a2c4a (patch) | |
| tree | 16eedfa5ba4b87ef030f42146c76d50769c8ef1e /Makefile | |
| parent | pinctrl: intel: Prevent force threading of the interrupt handler (diff) | |
| download | linux-dev-98849fa0163e755ef2c4565c814bf08ffb5a2c4a.tar.xz linux-dev-98849fa0163e755ef2c4565c814bf08ffb5a2c4a.zip | |
pinctrl: OF: Don't create a pinctrl handle if no pinctrl entries exist
When pinctrl_get() is called for a device, it will return a valid handle
even if the device itself has no pinctrl state entries defined in
device-tree. This is caused by the function pinctrl_dt_to_map() which
will return success even if the first pinctrl state, 'pinctrl-0', is not
found in the device-tree node for a device.
According to the pinctrl device-tree binding documentation, pinctrl
states must be numbered starting from 0 and so 'pinctrl-0' should always
be present if a device uses pinctrl and therefore, if 'pinctrl-0' is not
present it seems valid that we should not return a valid pinctrl handle.
Fix this by returning an error code if the property 'pinctrl-0' is not
present for a device.
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'Makefile')
0 files changed, 0 insertions, 0 deletions