diff options
Diffstat (limited to 'target/linux/generic/backport-5.10/826-v5.17-of-base-make-small-of_parse_phandle-variants-static-.patch')
| -rw-r--r-- | target/linux/generic/backport-5.10/826-v5.17-of-base-make-small-of_parse_phandle-variants-static-.patch | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.10/826-v5.17-of-base-make-small-of_parse_phandle-variants-static-.patch b/target/linux/generic/backport-5.10/826-v5.17-of-base-make-small-of_parse_phandle-variants-static-.patch new file mode 100644 index 0000000000..b6ef67dfa7 --- /dev/null +++ b/target/linux/generic/backport-5.10/826-v5.17-of-base-make-small-of_parse_phandle-variants-static-.patch @@ -0,0 +1,359 @@ +From 66a8f7f04979f4ad739085f01d99c8caf620b4f5 Mon Sep 17 00:00:00 2001 +From: Michael Walle <michael@walle.cc> +Date: Tue, 18 Jan 2022 18:35:02 +0100 +Subject: [PATCH] of: base: make small of_parse_phandle() variants static + inline + +Make all the smaller variants of the of_parse_phandle() static inline. +This also let us remove the empty function stubs if CONFIG_OF is not +defined. + +Suggested-by: Rob Herring <robh@kernel.org> +Signed-off-by: Michael Walle <michael@walle.cc> +[robh: move index < 0 check into __of_parse_phandle_with_args] +Signed-off-by: Rob Herring <robh@kernel.org> +Link: https://lore.kernel.org/r/20220118173504.2867523-2-michael@walle.cc +--- + drivers/of/base.c | 131 +++------------------------------------ + include/linux/of.h | 148 ++++++++++++++++++++++++++++++++++++--------- + 2 files changed, 129 insertions(+), 150 deletions(-) + +--- a/drivers/of/base.c ++++ b/drivers/of/base.c +@@ -1372,15 +1372,18 @@ int of_phandle_iterator_args(struct of_p + return count; + } + +-static int __of_parse_phandle_with_args(const struct device_node *np, +- const char *list_name, +- const char *cells_name, +- int cell_count, int index, +- struct of_phandle_args *out_args) ++int __of_parse_phandle_with_args(const struct device_node *np, ++ const char *list_name, ++ const char *cells_name, ++ int cell_count, int index, ++ struct of_phandle_args *out_args) + { + struct of_phandle_iterator it; + int rc, cur_index = 0; + ++ if (index < 0) ++ return -EINVAL; ++ + /* Loop over the phandles until all the requested entry is found */ + of_for_each_phandle(&it, rc, np, list_name, cells_name, cell_count) { + /* +@@ -1423,82 +1426,7 @@ static int __of_parse_phandle_with_args( + of_node_put(it.node); + return rc; + } +- +-/** +- * of_parse_phandle - Resolve a phandle property to a device_node pointer +- * @np: Pointer to device node holding phandle property +- * @phandle_name: Name of property holding a phandle value +- * @index: For properties holding a table of phandles, this is the index into +- * the table +- * +- * Return: The device_node pointer with refcount incremented. Use +- * of_node_put() on it when done. +- */ +-struct device_node *of_parse_phandle(const struct device_node *np, +- const char *phandle_name, int index) +-{ +- struct of_phandle_args args; +- +- if (index < 0) +- return NULL; +- +- if (__of_parse_phandle_with_args(np, phandle_name, NULL, 0, +- index, &args)) +- return NULL; +- +- return args.np; +-} +-EXPORT_SYMBOL(of_parse_phandle); +- +-/** +- * of_parse_phandle_with_args() - Find a node pointed by phandle in a list +- * @np: pointer to a device tree node containing a list +- * @list_name: property name that contains a list +- * @cells_name: property name that specifies phandles' arguments count +- * @index: index of a phandle to parse out +- * @out_args: optional pointer to output arguments structure (will be filled) +- * +- * This function is useful to parse lists of phandles and their arguments. +- * Returns 0 on success and fills out_args, on error returns appropriate +- * errno value. +- * +- * Caller is responsible to call of_node_put() on the returned out_args->np +- * pointer. +- * +- * Example:: +- * +- * phandle1: node1 { +- * #list-cells = <2>; +- * }; +- * +- * phandle2: node2 { +- * #list-cells = <1>; +- * }; +- * +- * node3 { +- * list = <&phandle1 1 2 &phandle2 3>; +- * }; +- * +- * To get a device_node of the ``node2`` node you may call this: +- * of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args); +- */ +-int of_parse_phandle_with_args(const struct device_node *np, const char *list_name, +- const char *cells_name, int index, +- struct of_phandle_args *out_args) +-{ +- int cell_count = -1; +- +- if (index < 0) +- return -EINVAL; +- +- /* If cells_name is NULL we assume a cell count of 0 */ +- if (!cells_name) +- cell_count = 0; +- +- return __of_parse_phandle_with_args(np, list_name, cells_name, +- cell_count, index, out_args); +-} +-EXPORT_SYMBOL(of_parse_phandle_with_args); ++EXPORT_SYMBOL(__of_parse_phandle_with_args); + + /** + * of_parse_phandle_with_args_map() - Find a node pointed by phandle in a list and remap it +@@ -1685,47 +1613,6 @@ free: + EXPORT_SYMBOL(of_parse_phandle_with_args_map); + + /** +- * of_parse_phandle_with_fixed_args() - Find a node pointed by phandle in a list +- * @np: pointer to a device tree node containing a list +- * @list_name: property name that contains a list +- * @cell_count: number of argument cells following the phandle +- * @index: index of a phandle to parse out +- * @out_args: optional pointer to output arguments structure (will be filled) +- * +- * This function is useful to parse lists of phandles and their arguments. +- * Returns 0 on success and fills out_args, on error returns appropriate +- * errno value. +- * +- * Caller is responsible to call of_node_put() on the returned out_args->np +- * pointer. +- * +- * Example:: +- * +- * phandle1: node1 { +- * }; +- * +- * phandle2: node2 { +- * }; +- * +- * node3 { +- * list = <&phandle1 0 2 &phandle2 2 3>; +- * }; +- * +- * To get a device_node of the ``node2`` node you may call this: +- * of_parse_phandle_with_fixed_args(node3, "list", 2, 1, &args); +- */ +-int of_parse_phandle_with_fixed_args(const struct device_node *np, +- const char *list_name, int cell_count, +- int index, struct of_phandle_args *out_args) +-{ +- if (index < 0) +- return -EINVAL; +- return __of_parse_phandle_with_args(np, list_name, NULL, cell_count, +- index, out_args); +-} +-EXPORT_SYMBOL(of_parse_phandle_with_fixed_args); +- +-/** + * of_count_phandle_with_args() - Find the number of phandles references in a property + * @np: pointer to a device tree node containing a list + * @list_name: property name that contains a list +--- a/include/linux/of.h ++++ b/include/linux/of.h +@@ -363,18 +363,12 @@ extern const struct of_device_id *of_mat + const struct of_device_id *matches, const struct device_node *node); + extern int of_modalias_node(struct device_node *node, char *modalias, int len); + extern void of_print_phandle_args(const char *msg, const struct of_phandle_args *args); +-extern struct device_node *of_parse_phandle(const struct device_node *np, +- const char *phandle_name, +- int index); +-extern int of_parse_phandle_with_args(const struct device_node *np, +- const char *list_name, const char *cells_name, int index, +- struct of_phandle_args *out_args); ++extern int __of_parse_phandle_with_args(const struct device_node *np, ++ const char *list_name, const char *cells_name, int cell_count, ++ int index, struct of_phandle_args *out_args); + extern int of_parse_phandle_with_args_map(const struct device_node *np, + const char *list_name, const char *stem_name, int index, + struct of_phandle_args *out_args); +-extern int of_parse_phandle_with_fixed_args(const struct device_node *np, +- const char *list_name, int cells_count, int index, +- struct of_phandle_args *out_args); + extern int of_count_phandle_with_args(const struct device_node *np, + const char *list_name, const char *cells_name); + +@@ -857,18 +851,12 @@ static inline int of_property_read_strin + return -ENOSYS; + } + +-static inline struct device_node *of_parse_phandle(const struct device_node *np, +- const char *phandle_name, +- int index) +-{ +- return NULL; +-} +- +-static inline int of_parse_phandle_with_args(const struct device_node *np, +- const char *list_name, +- const char *cells_name, +- int index, +- struct of_phandle_args *out_args) ++static inline int __of_parse_phandle_with_args(const struct device_node *np, ++ const char *list_name, ++ const char *cells_name, ++ int cell_count, ++ int index, ++ struct of_phandle_args *out_args) + { + return -ENOSYS; + } +@@ -882,13 +870,6 @@ static inline int of_parse_phandle_with_ + return -ENOSYS; + } + +-static inline int of_parse_phandle_with_fixed_args(const struct device_node *np, +- const char *list_name, int cells_count, int index, +- struct of_phandle_args *out_args) +-{ +- return -ENOSYS; +-} +- + static inline int of_count_phandle_with_args(const struct device_node *np, + const char *list_name, + const char *cells_name) +@@ -1065,6 +1046,117 @@ static inline bool of_node_is_type(const + } + + /** ++ * of_parse_phandle - Resolve a phandle property to a device_node pointer ++ * @np: Pointer to device node holding phandle property ++ * @phandle_name: Name of property holding a phandle value ++ * @index: For properties holding a table of phandles, this is the index into ++ * the table ++ * ++ * Return: The device_node pointer with refcount incremented. Use ++ * of_node_put() on it when done. ++ */ ++static inline struct device_node *of_parse_phandle(const struct device_node *np, ++ const char *phandle_name, ++ int index) ++{ ++ struct of_phandle_args args; ++ ++ if (__of_parse_phandle_with_args(np, phandle_name, NULL, 0, ++ index, &args)) ++ return NULL; ++ ++ return args.np; ++} ++ ++/** ++ * of_parse_phandle_with_args() - Find a node pointed by phandle in a list ++ * @np: pointer to a device tree node containing a list ++ * @list_name: property name that contains a list ++ * @cells_name: property name that specifies phandles' arguments count ++ * @index: index of a phandle to parse out ++ * @out_args: optional pointer to output arguments structure (will be filled) ++ * ++ * This function is useful to parse lists of phandles and their arguments. ++ * Returns 0 on success and fills out_args, on error returns appropriate ++ * errno value. ++ * ++ * Caller is responsible to call of_node_put() on the returned out_args->np ++ * pointer. ++ * ++ * Example:: ++ * ++ * phandle1: node1 { ++ * #list-cells = <2>; ++ * }; ++ * ++ * phandle2: node2 { ++ * #list-cells = <1>; ++ * }; ++ * ++ * node3 { ++ * list = <&phandle1 1 2 &phandle2 3>; ++ * }; ++ * ++ * To get a device_node of the ``node2`` node you may call this: ++ * of_parse_phandle_with_args(node3, "list", "#list-cells", 1, &args); ++ */ ++static inline int of_parse_phandle_with_args(const struct device_node *np, ++ const char *list_name, ++ const char *cells_name, ++ int index, ++ struct of_phandle_args *out_args) ++{ ++ int cell_count = -1; ++ ++ /* If cells_name is NULL we assume a cell count of 0 */ ++ if (!cells_name) ++ cell_count = 0; ++ ++ return __of_parse_phandle_with_args(np, list_name, cells_name, ++ cell_count, index, out_args); ++} ++ ++/** ++ * of_parse_phandle_with_fixed_args() - Find a node pointed by phandle in a list ++ * @np: pointer to a device tree node containing a list ++ * @list_name: property name that contains a list ++ * @cell_count: number of argument cells following the phandle ++ * @index: index of a phandle to parse out ++ * @out_args: optional pointer to output arguments structure (will be filled) ++ * ++ * This function is useful to parse lists of phandles and their arguments. ++ * Returns 0 on success and fills out_args, on error returns appropriate ++ * errno value. ++ * ++ * Caller is responsible to call of_node_put() on the returned out_args->np ++ * pointer. ++ * ++ * Example:: ++ * ++ * phandle1: node1 { ++ * }; ++ * ++ * phandle2: node2 { ++ * }; ++ * ++ * node3 { ++ * list = <&phandle1 0 2 &phandle2 2 3>; ++ * }; ++ * ++ * To get a device_node of the ``node2`` node you may call this: ++ * of_parse_phandle_with_fixed_args(node3, "list", 2, 1, &args); ++ */ ++static inline int of_parse_phandle_with_fixed_args(const struct device_node *np, ++ const char *list_name, ++ int cell_count, ++ int index, ++ struct of_phandle_args *out_args) ++{ ++ return __of_parse_phandle_with_args(np, list_name, NULL, cell_count, ++ index, out_args); ++} ++ ++/** + * of_property_count_u8_elems - Count the number of u8 elements in a property + * + * @np: device node from which the property value is to be read. |