From mboxrd@z Thu Jan 1 00:00:00 1970 From: Miquel Raynal To: Boris Brezillon , Richard Weinberger , David Woodhouse , Brian Norris , Marek Vasut , Cyrille Pitchen , Josh Wu , Kamal Dasu , Harvey Hunt , Stefan Agner Cc: linux-mtd@lists.infradead.org, linux-arm-kernel@lists.infradead.org, Miquel Raynal Subject: [PATCH 22/52] mtd: rawnand: lpc32xx_mlc: enhance the probe function error path Date: Fri, 2 Mar 2018 18:03:30 +0100 Message-Id: <20180302170400.6712-23-miquel.raynal@bootlin.com> In-Reply-To: <20180302170400.6712-1-miquel.raynal@bootlin.com> References: <20180302170400.6712-1-miquel.raynal@bootlin.com> List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Prepare the migration of the lpc32xx_mlc driver to use nand_scan() by cleaning the error path in the probe function. Signed-off-by: Miquel Raynal --- drivers/mtd/nand/raw/lpc32xx_mlc.c | 38 ++++++++++++++++++++------------------ 1 file changed, 20 insertions(+), 18 deletions(-) diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index e357948a7505..6e31faf2f07f 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -673,7 +673,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) host->io_base = devm_ioremap_resource(&pdev->dev, rc); if (IS_ERR(host->io_base)) return PTR_ERR(host->io_base); - + host->io_base_phy = rc->start; nand_chip = &host->nand_chip; @@ -706,11 +706,11 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) if (IS_ERR(host->clk)) { dev_err(&pdev->dev, "Clock initialization failure\n"); res = -ENOENT; - goto err_exit1; + goto free_gpio; } res = clk_prepare_enable(host->clk); if (res) - goto err_put_clk; + goto put_clk; nand_chip->cmd_ctrl = lpc32xx_nand_cmd_ctrl; nand_chip->dev_ready = lpc32xx_nand_device_ready; @@ -744,7 +744,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) res = lpc32xx_dma_setup(host); if (res) { res = -EIO; - goto err_exit2; + goto unprepare_clk; } } @@ -754,18 +754,18 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) */ res = nand_scan_ident(mtd, 1, NULL); if (res) - goto err_exit3; + goto release_dma_chan; host->dma_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL); if (!host->dma_buf) { res = -ENOMEM; - goto err_exit3; + goto release_dma_chan; } host->dummy_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL); if (!host->dummy_buf) { res = -ENOMEM; - goto err_exit3; + goto release_dma_chan; } nand_chip->ecc.mode = NAND_ECC_HW; @@ -783,14 +783,14 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) if (host->irq < 0) { dev_err(&pdev->dev, "failed to get platform irq\n"); res = -EINVAL; - goto err_exit3; + goto release_dma_chan; } if (request_irq(host->irq, (irq_handler_t)&lpc3xxx_nand_irq, IRQF_TRIGGER_HIGH, DRV_NAME, host)) { dev_err(&pdev->dev, "Error requesting NAND IRQ\n"); res = -ENXIO; - goto err_exit3; + goto release_dma_chan; } /* @@ -799,27 +799,29 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) */ res = nand_scan_tail(mtd); if (res) - goto err_exit4; + goto free_irq; mtd->name = DRV_NAME; res = mtd_device_register(mtd, host->ncfg->parts, host->ncfg->num_parts); - if (!res) - return res; + if (res) + goto release_nand; + return 0; + +release_nand: nand_release(mtd); - -err_exit4: +free_irq: free_irq(host->irq, host); -err_exit3: +release_dma_chan: if (use_dma) dma_release_channel(host->dma_chan); -err_exit2: +unprepare_clk: clk_disable_unprepare(host->clk); -err_put_clk: +put_clk: clk_put(host->clk); -err_exit1: +free_gpio: lpc32xx_wp_enable(host); gpio_free(host->ncfg->wp_gpio); -- 2.14.1 From mboxrd@z Thu Jan 1 00:00:00 1970 From: miquel.raynal@bootlin.com (Miquel Raynal) Date: Fri, 2 Mar 2018 18:03:30 +0100 Subject: [PATCH 22/52] mtd: rawnand: lpc32xx_mlc: enhance the probe function error path In-Reply-To: <20180302170400.6712-1-miquel.raynal@bootlin.com> References: <20180302170400.6712-1-miquel.raynal@bootlin.com> Message-ID: <20180302170400.6712-23-miquel.raynal@bootlin.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Prepare the migration of the lpc32xx_mlc driver to use nand_scan() by cleaning the error path in the probe function. Signed-off-by: Miquel Raynal --- drivers/mtd/nand/raw/lpc32xx_mlc.c | 38 ++++++++++++++++++++------------------ 1 file changed, 20 insertions(+), 18 deletions(-) diff --git a/drivers/mtd/nand/raw/lpc32xx_mlc.c b/drivers/mtd/nand/raw/lpc32xx_mlc.c index e357948a7505..6e31faf2f07f 100644 --- a/drivers/mtd/nand/raw/lpc32xx_mlc.c +++ b/drivers/mtd/nand/raw/lpc32xx_mlc.c @@ -673,7 +673,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) host->io_base = devm_ioremap_resource(&pdev->dev, rc); if (IS_ERR(host->io_base)) return PTR_ERR(host->io_base); - + host->io_base_phy = rc->start; nand_chip = &host->nand_chip; @@ -706,11 +706,11 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) if (IS_ERR(host->clk)) { dev_err(&pdev->dev, "Clock initialization failure\n"); res = -ENOENT; - goto err_exit1; + goto free_gpio; } res = clk_prepare_enable(host->clk); if (res) - goto err_put_clk; + goto put_clk; nand_chip->cmd_ctrl = lpc32xx_nand_cmd_ctrl; nand_chip->dev_ready = lpc32xx_nand_device_ready; @@ -744,7 +744,7 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) res = lpc32xx_dma_setup(host); if (res) { res = -EIO; - goto err_exit2; + goto unprepare_clk; } } @@ -754,18 +754,18 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) */ res = nand_scan_ident(mtd, 1, NULL); if (res) - goto err_exit3; + goto release_dma_chan; host->dma_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL); if (!host->dma_buf) { res = -ENOMEM; - goto err_exit3; + goto release_dma_chan; } host->dummy_buf = devm_kzalloc(&pdev->dev, mtd->writesize, GFP_KERNEL); if (!host->dummy_buf) { res = -ENOMEM; - goto err_exit3; + goto release_dma_chan; } nand_chip->ecc.mode = NAND_ECC_HW; @@ -783,14 +783,14 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) if (host->irq < 0) { dev_err(&pdev->dev, "failed to get platform irq\n"); res = -EINVAL; - goto err_exit3; + goto release_dma_chan; } if (request_irq(host->irq, (irq_handler_t)&lpc3xxx_nand_irq, IRQF_TRIGGER_HIGH, DRV_NAME, host)) { dev_err(&pdev->dev, "Error requesting NAND IRQ\n"); res = -ENXIO; - goto err_exit3; + goto release_dma_chan; } /* @@ -799,27 +799,29 @@ static int lpc32xx_nand_probe(struct platform_device *pdev) */ res = nand_scan_tail(mtd); if (res) - goto err_exit4; + goto free_irq; mtd->name = DRV_NAME; res = mtd_device_register(mtd, host->ncfg->parts, host->ncfg->num_parts); - if (!res) - return res; + if (res) + goto release_nand; + return 0; + +release_nand: nand_release(mtd); - -err_exit4: +free_irq: free_irq(host->irq, host); -err_exit3: +release_dma_chan: if (use_dma) dma_release_channel(host->dma_chan); -err_exit2: +unprepare_clk: clk_disable_unprepare(host->clk); -err_put_clk: +put_clk: clk_put(host->clk); -err_exit1: +free_gpio: lpc32xx_wp_enable(host); gpio_free(host->ncfg->wp_gpio); -- 2.14.1