{"id":800471,"url":"http://patchwork.ozlabs.org/api/1.2/patches/800471/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/patch/1502441568-22896-2-git-send-email-pantelis.antoniou@konsulko.com/","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/1.2/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<1502441568-22896-2-git-send-email-pantelis.antoniou@konsulko.com>","list_archive_url":null,"date":"2017-08-11T08:52:39","name":"[U-Boot,v2,01/10] Introduce fdt_setprop_placeholder() method","commit_ref":null,"pull_url":null,"state":"superseded","archived":false,"hash":"0790ffa17aec2c0465e8a17fbac08362dfc3be5b","submitter":{"id":64098,"url":"http://patchwork.ozlabs.org/api/1.2/people/64098/?format=json","name":"Pantelis Antoniou","email":"pantelis.antoniou@konsulko.com"},"delegate":{"id":3184,"url":"http://patchwork.ozlabs.org/api/1.2/users/3184/?format=json","username":"sjg","first_name":"Simon","last_name":"Glass","email":"sjg@chromium.org"},"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/1502441568-22896-2-git-send-email-pantelis.antoniou@konsulko.com/mbox/","series":[],"comments":"http://patchwork.ozlabs.org/api/patches/800471/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/800471/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":["ozlabs.org;\n\tspf=none (mailfrom) smtp.mailfrom=lists.denx.de\n\t(client-ip=81.169.180.215; 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charset=\"utf-8\"","Content-Transfer-Encoding":"base64","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" "},"content":"In some cases you need to add a property but the contents of it\nare not known at creation time, merely the extend of it.\n\nThis method allows you to create a property of a given size (filled\nwith garbage) while a pointer to the property data will be provided.\n\nSigned-off-by: Pantelis Antoniou \n[dwg: Corrected commit message]\nSigned-off-by: David Gibson \n---\n lib/libfdt/fdt_rw.c | 20 +++++++++++++++++---\n lib/libfdt/libfdt.h | 31 +++++++++++++++++++++++++++++++\n 2 files changed, 48 insertions(+), 3 deletions(-)","diff":"diff --git a/lib/libfdt/fdt_rw.c b/lib/libfdt/fdt_rw.c\nindex 80a3212..3dc7752 100644\n--- a/lib/libfdt/fdt_rw.c\n+++ b/lib/libfdt/fdt_rw.c\n@@ -228,8 +228,8 @@ int fdt_set_name(void *fdt, int nodeoffset, const char *name)\n \treturn 0;\n }\n \n-int fdt_setprop(void *fdt, int nodeoffset, const char *name,\n-\t\tconst void *val, int len)\n+int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name,\n+\t\t\t int len, void **prop_data)\n {\n \tstruct fdt_property *prop;\n \tint err;\n@@ -242,8 +242,22 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,\n \tif (err)\n \t\treturn err;\n \n+\t*prop_data = prop->data;\n+\treturn 0;\n+}\n+\n+int fdt_setprop(void *fdt, int nodeoffset, const char *name,\n+\t\tconst void *val, int len)\n+{\n+\tvoid *prop_data;\n+\tint err;\n+\n+\terr = fdt_setprop_placeholder(fdt, nodeoffset, name, len, &prop_data);\n+\tif (err)\n+\t\treturn err;\n+\n \tif (len)\n-\t\tmemcpy(prop->data, val, len);\n+\t\tmemcpy(prop_data, val, len);\n \treturn 0;\n }\n \ndiff --git a/lib/libfdt/libfdt.h b/lib/libfdt/libfdt.h\nindex f3f9cad..6af94cb 100644\n--- a/lib/libfdt/libfdt.h\n+++ b/lib/libfdt/libfdt.h\n@@ -1405,6 +1405,37 @@ int fdt_setprop(void *fdt, int nodeoffset, const char *name,\n \t\tconst void *val, int len);\n \n /**\n+ * fdt_setprop _placeholder - allocate space for a property\n+ * @fdt: pointer to the device tree blob\n+ * @nodeoffset: offset of the node whose property to change\n+ * @name: name of the property to change\n+ * @len: length of the property value\n+ * @prop_data: return pointer to property data\n+ *\n+ * fdt_setprop_placeholer() allocates the named property in the given node.\n+ * If the property exists it is resized. In either case a pointer to the\n+ * property data is returned.\n+ *\n+ * This function may insert or delete data from the blob, and will\n+ * therefore change the offsets of some existing nodes.\n+ *\n+ * returns:\n+ *\t0, on success\n+ *\t-FDT_ERR_NOSPACE, there is insufficient free space in the blob to\n+ *\t\tcontain the new property value\n+ *\t-FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag\n+ *\t-FDT_ERR_BADLAYOUT,\n+ *\t-FDT_ERR_BADMAGIC,\n+ *\t-FDT_ERR_BADVERSION,\n+ *\t-FDT_ERR_BADSTATE,\n+ *\t-FDT_ERR_BADSTRUCTURE,\n+ *\t-FDT_ERR_BADLAYOUT,\n+ *\t-FDT_ERR_TRUNCATED, standard meanings\n+ */\n+int fdt_setprop_placeholder(void *fdt, int nodeoffset, const char *name,\n+\t\t\t int len, void **prop_data);\n+\n+/**\n * fdt_setprop_u32 - set a property to a 32-bit integer\n * @fdt: pointer to the device tree blob\n * @nodeoffset: offset of the node whose property to change\n","prefixes":["U-Boot","v2","01/10"]}