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-rw-r--r--drivers/pinctrl/core.c18
1 files changed, 10 insertions, 8 deletions
diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c
index 552d8c115c4f..e2d4abb29d1a 100644
--- a/drivers/pinctrl/core.c
+++ b/drivers/pinctrl/core.c
@@ -567,14 +567,16 @@ static struct pinctrl *pinctrl_get_locked(struct device *dev, const char *name)
}
}
- /* We should have atleast one map, right */
- if (!num_maps) {
- pr_err("could not find any mux maps for device %s, ID %s\n",
- devname ? devname : "(anonymous)",
- name ? name : "(undefined)");
- kfree(p);
- return ERR_PTR(-EINVAL);
- }
+ /*
+ * This may be perfectly legitimate. An IP block may get re-used
+ * across SoCs. Not all of those SoCs may need pinmux settings for the
+ * IP block, e.g. if one SoC dedicates pins to that function but
+ * another doesn't. The driver won't know this, and will always
+ * attempt to set up the pinmux. The mapping table defines whether any
+ * HW programming is actually needed.
+ */
+ if (!num_maps)
+ dev_info(dev, "zero maps found for mapping %s\n", name);
pr_debug("found %u mux maps for device %s, UD %s\n",
num_maps,