diff options
author | Linus Walleij <linus.walleij@linaro.org> | 2012-11-20 13:54:18 (GMT) |
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committer | Linus Walleij <linus.walleij@linaro.org> | 2012-11-21 07:55:10 (GMT) |
commit | dfa9751548444caadda2d6de1a2b67e05b34c2aa (patch) | |
tree | cc34767ee97e0be020dd9fb4d6fb82a26e29768d /drivers/pinctrl | |
parent | 192c369c6165dff233f22aa70209a92b030d233d (diff) | |
download | linux-dfa9751548444caadda2d6de1a2b67e05b34c2aa.tar.xz |
pinctrl: make range registration defer properly
This makes the pinctrl_find_and_add_gpio_range() return
-EPROBE_DEFER if the range hosting pin controller cannot be
located. We may assume that the common case for why adding a
range fails is that the targe pin controller device has not
probed yet.
Reviewed-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Viresh Kumar <viresh.kumar@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl')
-rw-r--r-- | drivers/pinctrl/core.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index 15f5ac8..33af811 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -350,8 +350,13 @@ struct pinctrl_dev *pinctrl_find_and_add_gpio_range(const char *devname, { struct pinctrl_dev *pctldev = get_pinctrl_dev_from_devname(devname); + /* + * If we can't find this device, let's assume that is because + * it has not probed yet, so the driver trying to register this + * range need to defer probing. + */ if (!pctldev) - return NULL; + return ERR_PTR(-EPROBE_DEFER); pinctrl_add_gpio_range(pctldev, range); return pctldev; |