diff options
Diffstat (limited to 'drivers/reset/core.c')
-rw-r--r-- | drivers/reset/core.c | 54 |
1 files changed, 27 insertions, 27 deletions
diff --git a/drivers/reset/core.c b/drivers/reset/core.c index 213ff40dda11..01c0c7aa835c 100644 --- a/drivers/reset/core.c +++ b/drivers/reset/core.c @@ -76,10 +76,11 @@ static const char *rcdev_name(struct reset_controller_dev *rcdev) * of_reset_simple_xlate - translate reset_spec to the reset line number * @rcdev: a pointer to the reset controller device * @reset_spec: reset line specifier as found in the device tree - * @flags: a flags pointer to fill in (optional) * - * This simple translation function should be used for reset controllers - * with 1:1 mapping, where reset lines can be indexed by number without gaps. + * This static translation function is used by default if of_xlate in + * :c:type:`reset_controller_dev` is not set. It is useful for all reset + * controllers with 1:1 mapping, where reset lines can be indexed by number + * without gaps. */ static int of_reset_simple_xlate(struct reset_controller_dev *rcdev, const struct of_phandle_args *reset_spec) @@ -149,13 +150,14 @@ int devm_reset_controller_register(struct device *dev, return -ENOMEM; ret = reset_controller_register(rcdev); - if (!ret) { - *rcdevp = rcdev; - devres_add(dev, rcdevp); - } else { + if (ret) { devres_free(rcdevp); + return ret; } + *rcdevp = rcdev; + devres_add(dev, rcdevp); + return ret; } EXPORT_SYMBOL_GPL(devm_reset_controller_register); @@ -334,7 +336,6 @@ EXPORT_SYMBOL_GPL(reset_control_reset); * internal state to be reset, but must be prepared for this to happen. * Consumers must not use reset_control_reset on shared reset lines when * reset_control_(de)assert has been used. - * return 0. * * If rstc is NULL it is an optional reset and the function will just * return 0. @@ -393,7 +394,6 @@ EXPORT_SYMBOL_GPL(reset_control_assert); * After calling this function, the reset is guaranteed to be deasserted. * Consumers must not use reset_control_reset on shared reset lines when * reset_control_(de)assert has been used. - * return 0. * * If rstc is NULL it is an optional reset and the function will just * return 0. @@ -748,6 +748,7 @@ static void reset_control_array_put(struct reset_control_array *resets) for (i = 0; i < resets->num_rstcs; i++) __reset_control_put_internal(resets->rstc[i]); mutex_unlock(&reset_list_mutex); + kfree(resets); } /** @@ -787,13 +788,14 @@ struct reset_control *__devm_reset_control_get(struct device *dev, return ERR_PTR(-ENOMEM); rstc = __reset_control_get(dev, id, index, shared, optional, acquired); - if (!IS_ERR(rstc)) { - *ptr = rstc; - devres_add(dev, ptr); - } else { + if (IS_ERR_OR_NULL(rstc)) { devres_free(ptr); + return rstc; } + *ptr = rstc; + devres_add(dev, ptr); + return rstc; } EXPORT_SYMBOL_GPL(__devm_reset_control_get); @@ -825,9 +827,10 @@ int __device_reset(struct device *dev, bool optional) } EXPORT_SYMBOL_GPL(__device_reset); -/** +/* * APIs to manage an array of reset controls. */ + /** * of_reset_control_get_count - Count number of resets available with a device * @@ -860,8 +863,7 @@ static int of_reset_control_get_count(struct device_node *node) * @acquired: only one reset control may be acquired for a given controller * and ID * - * Returns pointer to allocated reset_control_array on success or - * error on failure + * Returns pointer to allocated reset_control on success or error on failure */ struct reset_control * of_reset_control_array_get(struct device_node *np, bool shared, bool optional, @@ -914,28 +916,26 @@ EXPORT_SYMBOL_GPL(of_reset_control_array_get); * that just have to be asserted or deasserted, without any * requirements on the order. * - * Returns pointer to allocated reset_control_array on success or - * error on failure + * Returns pointer to allocated reset_control on success or error on failure */ struct reset_control * devm_reset_control_array_get(struct device *dev, bool shared, bool optional) { - struct reset_control **devres; - struct reset_control *rstc; + struct reset_control **ptr, *rstc; - devres = devres_alloc(devm_reset_control_release, sizeof(*devres), - GFP_KERNEL); - if (!devres) + ptr = devres_alloc(devm_reset_control_release, sizeof(*ptr), + GFP_KERNEL); + if (!ptr) return ERR_PTR(-ENOMEM); rstc = of_reset_control_array_get(dev->of_node, shared, optional, true); - if (IS_ERR(rstc)) { - devres_free(devres); + if (IS_ERR_OR_NULL(rstc)) { + devres_free(ptr); return rstc; } - *devres = rstc; - devres_add(dev, devres); + *ptr = rstc; + devres_add(dev, ptr); return rstc; } |