From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brian Norris Subject: [RFC PATCH 6/7] RFC: mtd: partitions: enable of_match_table matching Date: Fri, 4 Dec 2015 21:19:22 -0800 Message-ID: <1449292763-129421-7-git-send-email-computersforpeace@gmail.com> References: <1449292763-129421-1-git-send-email-computersforpeace@gmail.com> Return-path: DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=i4qVevBIfLy+ZzrWmPDPFuELrSIgKyoxT83zkKIFFeg=; b=TO3jzF/GoJb84Rrt6PqHBDslHkCYXuE+ZVqTclA3P4pwqiAMfkSyk6VylFzSTMH1W4 y/Le0NrgRLuJPBfVlR9sTfdrA1iTTWgTbYU/6FdyYH/kLwJbpGre6SyIj3QTDrWerHzA WDMuuOmvZ3ur2DRGdV+6cYEXLIYJthZ649MpKuMcMteZdwcvjfWZ+wgVJYitRMmUJdgU rZzKdLIkywF/x2rOmJPysXsHiAoatwysFrcOL0EVQ9xinf6ZjGfkfGJ4gc6AKLC7R25/ UGsCOz0WtnWUsWLuewwswBbQKQXgAiv+nWGm9eKUBK4L2O6YRlbTo9dzYg/QqTmHvS+1 M+Lg== In-Reply-To: <1449292763-129421-1-git-send-email-computersforpeace@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-mtd@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Boris Brezillon , Linus Walleij , Geert Uytterhoeven , Simon Arlott , Jason Gunthorpe , Jonas Gorski , Brian Norris , devicetree@vger.kernel.org, devicetree-spec@vger.kernel.org, Rob Herring , =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= , Hauke Mehrtens , Arnd Bergmann Partition parsers can now provide an of_match_table to enable flash<-->parser matching via device tree. TODO: Doesn't yet work when parser is built as module. I can't just use request_module() and friends, since OF matches don't tell me the name of the driver/module. Maybe I can report uevents? Signed-off-by: Brian Norris --- drivers/mtd/mtdpart.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/drivers/mtd/mtdpart.c b/drivers/mtd/mtdpart.c index b3100742ddf6..91eb2df0bf1e 100644 --- a/drivers/mtd/mtdpart.c +++ b/drivers/mtd/mtdpart.c @@ -29,6 +29,7 @@ #include #include #include +#include #include #include @@ -728,6 +729,25 @@ static struct mtd_part_parser *mtd_part_parser_get_by_name(const char *name) return __mtd_part_parser_get_by_name(name); } +static struct mtd_part_parser *mtd_part_parser_get_by_of(struct mtd_info *mtd) +{ + struct mtd_part_parser *p, *ret = NULL; + + spin_lock(&part_parser_lock); + + list_for_each_entry(p, &part_parsers, list) { + if (of_mtd_match_mtd_parser(mtd, p) && + try_module_get(p->owner)) { + ret = p; + break; + } + } + + spin_unlock(&part_parser_lock); + + return ret; +} + static inline void mtd_part_parser_put(const struct mtd_part_parser *p) { module_put(p->owner); @@ -847,6 +867,18 @@ int parse_mtd_partitions(struct mtd_info *master, const char *const *types, if (ret < 0 && !err) err = ret; } + + parser = mtd_part_parser_get_by_of(master); + if (!parser) + return err; + + ret = mtd_part_do_parse(parser, master, pparts, data); + if (ret > 0) + return 0; + mtd_part_parser_put(parser); + if (ret < 0 && !err) + err = ret; + return err; } -- 2.6.0.rc2.230.g3dd15c0