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| author | Linus Walleij <linus.walleij@linaro.org> | 2012-04-10 10:00:38 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2012-04-18 13:53:11 +0200 |
| commit | c05127c4e2c6e7d9949347a76fd05c337bcd5e84 (patch) | |
| tree | 5b23f8a116919028317f026e3f9998dce2ffb828 /drivers/pinctrl/devicetree.c | |
| parent | pinctrl: add some error checking for user interfaces (diff) | |
| download | linux-c05127c4e2c6e7d9949347a76fd05c337bcd5e84.tar.xz linux-c05127c4e2c6e7d9949347a76fd05c337bcd5e84.zip | |
pinctrl: implement pinctrl deferred probing
If drivers try to obtain pinctrl handles for a pin controller that
has not yet registered to the subsystem, we need to be able to
back out and retry with deferred probing. So let's return
-EPROBE_DEFER whenever this location fails. Also downgrade the
errors to info, maybe we will even set them to debug once the
deferred probing is commonplace.
Cc: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/pinctrl/devicetree.c')
| -rw-r--r-- | drivers/pinctrl/devicetree.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/pinctrl/devicetree.c b/drivers/pinctrl/devicetree.c index 5ef2feb44395..fcb1de45473c 100644 --- a/drivers/pinctrl/devicetree.c +++ b/drivers/pinctrl/devicetree.c @@ -121,11 +121,11 @@ static int dt_to_map_one_config(struct pinctrl *p, const char *statename, for (;;) { np_pctldev = of_get_next_parent(np_pctldev); if (!np_pctldev || of_node_is_root(np_pctldev)) { - dev_err(p->dev, "could not find pctldev for node %s\n", + dev_info(p->dev, "could not find pctldev for node %s, deferring probe\n", np_config->full_name); of_node_put(np_pctldev); - /* FIXME: This should trigger deferrered probe */ - return -ENODEV; + /* OK let's just assume this will appear later then */ + return -EPROBE_DEFER; } pctldev = find_pinctrl_by_of_node(np_pctldev); if (pctldev) |