From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.bootlin.com ([62.4.15.54]) by merlin.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gP3iy-0006o1-03 for linux-mtd@lists.infradead.org; Tue, 20 Nov 2018 10:57:45 +0000 From: Boris Brezillon To: Boris Brezillon , Richard Weinberger , Miquel Raynal , linux-mtd@lists.infradead.org Cc: David Woodhouse , Brian Norris , Marek Vasut , Xiaolei Li , Matthias Brugger , Maxim Levitsky Subject: [RFC PATCH 3/5] mtd: rawnand: omap2: Use nand_controller_init() Date: Tue, 20 Nov 2018 11:57:18 +0100 Message-Id: <20181120105720.23081-4-boris.brezillon@bootlin.com> In-Reply-To: <20181120105720.23081-1-boris.brezillon@bootlin.com> References: <20181120105720.23081-1-boris.brezillon@bootlin.com> List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Stop initializing omap_gpmc_controller fields are declaration time and replace that by a call to nand_controller_init(). Since the same object might be shared by several NAND chips and the NAND controller driver expects a ->probe() per-chip, we need to keep track of the omap_gpmc_controller state (whether it's already been initialized or not). Signed-off-by: Boris Brezillon --- drivers/mtd/nand/raw/omap2.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/mtd/nand/raw/omap2.c b/drivers/mtd/nand/raw/omap2.c index 886d05c391ef..086561811896 100644 --- a/drivers/mtd/nand/raw/omap2.c +++ b/drivers/mtd/nand/raw/omap2.c @@ -2173,11 +2173,8 @@ static const struct nand_controller_ops omap_nand_controller_ops = { }; /* Shared among all NAND instances to synchronize access to the ECC Engine */ -static struct nand_controller omap_gpmc_controller = { - .lock = __SPIN_LOCK_UNLOCKED(omap_gpmc_controller.lock), - .wq = __WAIT_QUEUE_HEAD_INITIALIZER(omap_gpmc_controller.wq), - .ops = &omap_nand_controller_ops, -}; +static struct nand_controller omap_gpmc_controller; +static bool omap_gpmc_controller_initialized; static int omap_nand_probe(struct platform_device *pdev) { @@ -2227,6 +2224,12 @@ static int omap_nand_probe(struct platform_device *pdev) info->phys_base = res->start; + if (!omap_gpmc_controller_initialized) { + omap_gpmc_controller.ops = &omap_nand_controller_ops; + nand_controller_init(&omap_gpmc_controller); + omap_gpmc_controller_initialized = true; + } + nand_chip->controller = &omap_gpmc_controller; nand_chip->legacy.IO_ADDR_W = nand_chip->legacy.IO_ADDR_R; -- 2.17.1