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pinctrl: enhance reporting of errors when loading from DT

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There are a few places in the api where the code simply returns -EINVAL when
it finds an error. An example is pinmux_map_to_setting() which now reports an
error if we try to match a group with a function that it does not support.

The reporting of errors in pinconf_check_ops and pinmux_check_ops now has the
same style and is located inside the according functions and not the calling
code.

When the map is found in the DT but the default state can not be selected we
get an error to know that the code at least tried.

The patch also removes a stray word from one comment and a "->" from another
for the sake of consistency.

Finally we replace a few pr_err/debug() calls with dev_err/dbg().

Thanks go to Stephen Warren for reviewing the patch and enhancing the reporting
inside pinmux_map_to_setting().

Signed-off-by: John Crispin <blogic@openwrt.org>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
John Crispin
2012-04-26 16:47:11 +02:00
committed by Linus Walleij
parent 02ae6da28f
commit ad6e1107ba
3 changed files with 49 additions and 27 deletions
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29
drivers/pinctrl/core.c
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@@ -1391,37 +1391,29 @@ struct pinctrl_dev *pinctrl_register(struct pinctrl_desc *pctldesc,
/* check core ops for sanity */
ret = pinctrl_check_ops(pctldev);
if (ret) {
pr_err("%s pinctrl ops lacks necessary functions\n",
pctldesc->name);
dev_err(dev, "pinctrl ops lacks necessary functions\n");
goto out_err;
}
/* If we're implementing pinmuxing, check the ops for sanity */
if (pctldesc->pmxops) {
ret = pinmux_check_ops(pctldev);
if (ret) {
pr_err("%s pinmux ops lacks necessary functions\n",
pctldesc->name);
if (ret)
goto out_err;
}
}
/* If we're implementing pinconfig, check the ops for sanity */
if (pctldesc->confops) {
ret = pinconf_check_ops(pctldev);
if (ret) {
pr_err("%s pin config ops lacks necessary functions\n",
pctldesc->name);
if (ret)
goto out_err;
}
}
/* Register all the pins */
pr_debug("try to register %d pins on %s...\n",
pctldesc->npins, pctldesc->name);
dev_dbg(dev, "try to register %d pins ...\n", pctldesc->npins);
ret = pinctrl_register_pins(pctldev, pctldesc->pins, pctldesc->npins);
if (ret) {
pr_err("error during pin registration\n");
dev_err(dev, "error during pin registration\n");
pinctrl_free_pindescs(pctldev, pctldesc->pins,
pctldesc->npins);
goto out_err;
@@ -1436,8 +1428,15 @@ struct pinctrl_dev *pinctrl_register(struct pinctrl_desc *pctldesc,
struct pinctrl_state *s =
pinctrl_lookup_state_locked(pctldev->p,
PINCTRL_STATE_DEFAULT);
if (!IS_ERR(s))
pinctrl_select_state_locked(pctldev->p, s);
if (IS_ERR(s)) {
dev_dbg(dev, "failed to lookup the default state\n");
} else {
ret = pinctrl_select_state_locked(pctldev->p, s);
if (ret) {
dev_err(dev,
"failed to select default state\n");
}
}
}
mutex_unlock(&pinctrl_mutex);