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Thu, 09 Jun 2011 07:23:08 -0700 (PDT) From: Dmitry Eremin-Solenikov To: linux-mtd@lists.infradead.org Subject: [PATCH 01/17] mtd: prepare to convert of_mtd_parse_partitions to partition parser Date: Thu, 9 Jun 2011 18:22:50 +0400 Message-Id: <1307629388-24769-2-git-send-email-dbaryshkov@gmail.com> X-Mailer: git-send-email 1.7.5.3 In-Reply-To: <1307629388-24769-1-git-send-email-dbaryshkov@gmail.com> References: <1307629388-24769-1-git-send-email-dbaryshkov@gmail.com> X-CRM114-Version: 20090807-BlameThorstenAndJenny ( TRE 0.7.6 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20110609_102312_325814_21A2FB55 X-CRM114-Status: GOOD ( 22.09 ) X-Spam-Score: -0.8 (/) X-Spam-Report: SpamAssassin version 3.3.1 on canuck.infradead.org summary: Content analysis details: (-0.8 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [74.125.82.49 listed in list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is freemail (dbaryshkov[at]gmail.com) -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.0 RFC_ABUSE_POST Both abuse and postmaster missing on sender domain 0.0 T_TO_NO_BRKTS_FREEMAIL T_TO_NO_BRKTS_FREEMAIL Cc: David Woodhouse , dedekind1@gmail.com X-BeenThere: linux-mtd@lists.infradead.org X-Mailman-Version: 2.1.12 Precedence: list List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-mtd-bounces@lists.infradead.org Errors-To: linux-mtd-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org Prepare to convert of_mtd_parse_partitions() to usual partitions parser: 1) Register ofpart parser 2) Internally don't use passed device for error printing 3) Add device_node to mtd_info struct 4) Move of_mtd_parse_partitions from __devinit to common text section 5) add ofpart to the default list of partition parsers Signed-off-by: Dmitry Eremin-Solenikov --- drivers/mtd/mtdcore.c | 19 +++++++++++++++++++ drivers/mtd/mtdpart.c | 8 ++++++-- drivers/mtd/ofpart.c | 30 ++++++++++++++++++++++++++++-- include/linux/mtd/mtd.h | 5 +++++ include/linux/mtd/partitions.h | 2 +- 5 files changed, 59 insertions(+), 5 deletions(-) diff --git a/drivers/mtd/mtdcore.c b/drivers/mtd/mtdcore.c index 1326747..2d5b865 100644 --- a/drivers/mtd/mtdcore.c +++ b/drivers/mtd/mtdcore.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include @@ -446,6 +447,10 @@ int mtd_device_register(struct mtd_info *master, const struct mtd_partition *parts, int nr_parts) { +#ifdef CONFIG_OF + if (master->node) + of_node_get(master->node); +#endif return parts ? add_mtd_partitions(master, parts, nr_parts) : add_mtd_device(master); } @@ -487,6 +492,11 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char **types, int err; struct mtd_partition *real_parts; +#ifdef CONFIG_OF + if (mtd->node) + of_node_get(mtd->node); +#endif + err = parse_mtd_partitions(mtd, types, &real_parts, origin); if (err <= 0 && nr_parts) { real_parts = kmemdup(parts, sizeof(*parts) * nr_parts, @@ -505,6 +515,11 @@ int mtd_device_parse_register(struct mtd_info *mtd, const char **types, err = -ENODEV; } +#ifdef CONFIG_OF + if (err < 0 && mtd->node) + of_node_put(mtd->node); +#endif + return err; } EXPORT_SYMBOL_GPL(mtd_device_parse_register); @@ -519,6 +534,10 @@ int mtd_device_unregister(struct mtd_info *master) { int err; +#ifdef CONFIG_OF + if (master->node) + of_node_put(master->node); +#endif err = del_mtd_partitions(master); if (err) return err; diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index 2b71ccb..584fa56 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -729,7 +729,11 @@ EXPORT_SYMBOL_GPL(deregister_mtd_parser); * Do not forget to update 'parse_mtd_partitions()' kerneldoc comment if you * are changing this array! */ -static const char *default_mtd_part_types[] = {"cmdlinepart", NULL}; +static const char * const default_mtd_part_types[] = { + "cmdlinepart", + "ofpart", + NULL +}; /** * parse_mtd_partitions - parse MTD partitions @@ -741,7 +745,7 @@ static const char *default_mtd_part_types[] = {"cmdlinepart", NULL}; * This function tries to find partition on MTD device @master. It uses MTD * partition parsers, specified in @types. However, if @types is %NULL, then * the default list of parsers is used. The default list contains only the - * "cmdlinepart" parser ATM. + * "cmdlinepart" and "ofpart" parsers ATM. * * This function may return: * o a negative error code in case of failure diff --git a/drivers/mtd/ofpart.c b/drivers/mtd/ofpart.c index a996718..4ac040e 100644 --- a/drivers/mtd/ofpart.c +++ b/drivers/mtd/ofpart.c @@ -20,7 +20,20 @@ #include #include -int __devinit of_mtd_parse_partitions(struct device *dev, +static int parse_ofpart_partitions(struct mtd_info *master, + struct mtd_partition **pparts, + unsigned long origin) +{ + struct device_node *node; + + node = master->node; + if (!node) + return 0; + + return of_mtd_parse_partitions(NULL, node, pparts); +} + +int of_mtd_parse_partitions(struct device *dev, struct device_node *node, struct mtd_partition **pparts) { @@ -69,7 +82,7 @@ int __devinit of_mtd_parse_partitions(struct device *dev, if (!i) { of_node_put(pp); - dev_err(dev, "No valid partition found on %s\n", node->full_name); + pr_err("No valid partition found on %s\n", node->full_name); kfree(*pparts); *pparts = NULL; return -EINVAL; @@ -79,4 +92,17 @@ int __devinit of_mtd_parse_partitions(struct device *dev, } EXPORT_SYMBOL(of_mtd_parse_partitions); +static struct mtd_part_parser ofpart_parser = { + .owner = THIS_MODULE, + .parse_fn = parse_ofpart_partitions, + .name = "ofpart", +}; + +static int __init ofpart_parser_init(void) +{ + return register_mtd_parser(&ofpart_parser); +} + +module_init(ofpart_parser_init); + MODULE_LICENSE("GPL"); diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h index d28a241..55fbb60 100644 --- a/include/linux/mtd/mtd.h +++ b/include/linux/mtd/mtd.h @@ -171,6 +171,11 @@ struct mtd_info { // Kernel-only stuff starts here. const char *name; int index; +#ifdef CONFIG_OF + /* Set by driver, reference counting handled by MTD registration/ + * unregistration functions. */ + struct device_node *node; +#endif /* ecc layout structure pointer - read only ! */ struct nand_ecclayout *ecclayout; diff --git a/include/linux/mtd/partitions.h b/include/linux/mtd/partitions.h index 1431cf2..a8bd193 100644 --- a/include/linux/mtd/partitions.h +++ b/include/linux/mtd/partitions.h @@ -74,7 +74,7 @@ struct device; struct device_node; #ifdef CONFIG_MTD_OF_PARTS -int __devinit of_mtd_parse_partitions(struct device *dev, +int of_mtd_parse_partitions(struct device *dev, struct device_node *node, struct mtd_partition **pparts); #else