From patchwork Sat Oct 13 12:06:22 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jean-Christophe PLAGNIOL-VILLARD X-Patchwork-Id: 1589071 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork2.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork2.kernel.org (Postfix) with ESMTP id 730B9DFF71 for ; Sat, 13 Oct 2012 12:12:01 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TN0WU-0002rK-NG; Sat, 13 Oct 2012 12:08:54 +0000 Received: from mo3.mail-out.ovh.net ([178.32.228.3]) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TN0WM-0002qs-O3 for linux-arm-kernel@lists.infradead.org; Sat, 13 Oct 2012 12:08:49 +0000 Received: from mail637.ha.ovh.net (b7.ovh.net [213.186.33.57]) by mo3.mail-out.ovh.net (Postfix) with SMTP id 9D40CFF887F for ; Sat, 13 Oct 2012 14:18:00 +0200 (CEST) Received: from b0.ovh.net (HELO queueout) (213.186.33.50) by b0.ovh.net with SMTP; 13 Oct 2012 14:09:11 +0200 Received: from ns32433.ovh.net (HELO localhost) (plagnioj%jcrosoft.com@213.251.161.87) by ns0.ovh.net with SMTP; 13 Oct 2012 14:09:10 +0200 From: Jean-Christophe PLAGNIOL-VILLARD To: linux-arm-kernel@lists.infradead.org X-Ovh-Mailout: 178.32.228.3 (mo3.mail-out.ovh.net) Subject: [PATCH 1/1] MTD: atmel_nand: use devm_xxx gpio kzalloc, gpio and ioremap Date: Sat, 13 Oct 2012 14:06:22 +0200 Message-Id: <1350129982-12106-1-git-send-email-plagnioj@jcrosoft.com> X-Mailer: git-send-email 1.7.10 X-Ovh-Tracer-Id: 6477865115673537533 X-Ovh-Remote: 213.251.161.87 (ns32433.ovh.net) X-Ovh-Local: 213.186.33.20 (ns0.ovh.net) X-OVH-SPAMSTATE: OK X-OVH-SPAMSCORE: -100 X-OVH-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeehuddrvdehucetufdoteggodetrfcurfhrohhfihhlvgemucfqggfjnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfhrhhomheplfgvrghnqdevhhhrihhsthhophhhvgcurffntefipffkqffnqdggkffnnfettfffuceophhlrghgnhhiohhjsehjtghrohhsohhfthdrtghomheqnecujfgurhephffvufffkffosedttdertdertddt X-Spam-Check: DONE|U 0.5/N X-VR-SPAMSTATE: OK X-VR-SPAMSCORE: -100 X-VR-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrfeehuddrvdehucetufdoteggodetrfcurfhrohhfihhlvgemucfqggfjnecuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfhrhhomheplfgvrghnqdevhhhrihhsthhophhhvgcurffntefipffkqffnqdggkffnnfettfffuceophhlrghgnhhiohhjsehjtghrohhsohhfthdrtghomheqnecujfgurhephffvufffkffosedttdertdertddt X-Spam-Note: CRM114 invocation failed X-Spam-Score: -1.9 (-) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-1.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [178.32.228.3 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: linux-mtd@lists.infradead.org, Jean-Christophe PLAGNIOL-VILLARD , Nicolas Ferre X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org this will allow to simply the error and remove path Cc: linux-mtd@lists.infradead.org Cc: Nicolas Ferre Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD --- drivers/mtd/nand/atmel_nand.c | 163 ++++++++++++++--------------------------- 1 file changed, 54 insertions(+), 109 deletions(-) diff --git a/drivers/mtd/nand/atmel_nand.c b/drivers/mtd/nand/atmel_nand.c index 92623ac..2b43656 100644 --- a/drivers/mtd/nand/atmel_nand.c +++ b/drivers/mtd/nand/atmel_nand.c @@ -364,43 +364,33 @@ static void __devinit __iomem *pmecc_get_alpha_to(struct atmel_nand_host *host) table_size * sizeof(int16_t); } -static void pmecc_data_free(struct atmel_nand_host *host) -{ - kfree(host->pmecc_partial_syn); - kfree(host->pmecc_si); - kfree(host->pmecc_lmu); - kfree(host->pmecc_smu); - kfree(host->pmecc_mu); - kfree(host->pmecc_dmu); - kfree(host->pmecc_delta); -} - static int __devinit pmecc_data_alloc(struct atmel_nand_host *host) { const int cap = host->pmecc_corr_cap; + int size; + + size = (2 * cap + 1) * sizeof(int16_t); + host->pmecc_partial_syn = devm_kzalloc(host->dev, size, GFP_KERNEL); + host->pmecc_si = devm_kzalloc(host->dev, size, GFP_KERNEL); + host->pmecc_lmu = devm_kzalloc(host->dev, + (cap + 1) * sizeof(int16_t), GFP_KERNEL); + host->pmecc_smu = devm_kzalloc(host->dev, + (cap + 2) * (2 * cap + 1) * sizeof(int16_t), GFP_KERNEL); + size = (cap + 1) * sizeof(int); + host->pmecc_mu = devm_kzalloc(host->dev, size, GFP_KERNEL); + host->pmecc_dmu = devm_kzalloc(host->dev, size, GFP_KERNEL); + host->pmecc_delta = devm_kzalloc(host->dev, size, GFP_KERNEL); + + if (!host->pmecc_partial_syn || + !host->pmecc_si || + !host->pmecc_lmu || + !host->pmecc_smu || + !host->pmecc_mu || + !host->pmecc_dmu || + !host->pmecc_delta) + return -ENOMEM; - host->pmecc_partial_syn = kzalloc((2 * cap + 1) * sizeof(int16_t), - GFP_KERNEL); - host->pmecc_si = kzalloc((2 * cap + 1) * sizeof(int16_t), GFP_KERNEL); - host->pmecc_lmu = kzalloc((cap + 1) * sizeof(int16_t), GFP_KERNEL); - host->pmecc_smu = kzalloc((cap + 2) * (2 * cap + 1) * sizeof(int16_t), - GFP_KERNEL); - host->pmecc_mu = kzalloc((cap + 1) * sizeof(int), GFP_KERNEL); - host->pmecc_dmu = kzalloc((cap + 1) * sizeof(int), GFP_KERNEL); - host->pmecc_delta = kzalloc((cap + 1) * sizeof(int), GFP_KERNEL); - - if (host->pmecc_partial_syn && - host->pmecc_si && - host->pmecc_lmu && - host->pmecc_smu && - host->pmecc_mu && - host->pmecc_dmu && - host->pmecc_delta) - return 0; - - /* error happened */ - pmecc_data_free(host); - return -ENOMEM; + return 0; } static void pmecc_gen_syndrome(struct mtd_info *mtd, int sector) @@ -923,27 +913,25 @@ static int __init atmel_pmecc_nand_init_params(struct platform_device *pdev, return 0; } - host->ecc = ioremap(regs->start, resource_size(regs)); + host->ecc = devm_request_and_ioremap(&pdev->dev, regs); if (host->ecc == NULL) { dev_err(host->dev, "ioremap failed\n"); err_no = -EIO; - goto err_pmecc_ioremap; + goto err; } regs_pmerr = platform_get_resource(pdev, IORESOURCE_MEM, 2); regs_rom = platform_get_resource(pdev, IORESOURCE_MEM, 3); if (regs_pmerr && regs_rom) { - host->pmerrloc_base = ioremap(regs_pmerr->start, - resource_size(regs_pmerr)); - host->pmecc_rom_base = ioremap(regs_rom->start, - resource_size(regs_rom)); + host->pmerrloc_base = devm_request_and_ioremap(&pdev->dev, regs_pmerr); + host->pmecc_rom_base = devm_request_and_ioremap(&pdev->dev, regs_rom); } if (!host->pmerrloc_base || !host->pmecc_rom_base) { dev_err(host->dev, "Can not get I/O resource for PMECC ERRLOC controller or ROM!\n"); err_no = -EIO; - goto err_pmloc_ioremap; + goto err; } /* ECC is calculated for the whole page (1 step) */ @@ -968,7 +956,7 @@ static int __init atmel_pmecc_nand_init_params(struct platform_device *pdev, if (nand_chip->ecc.bytes > mtd->oobsize - 2) { dev_err(host->dev, "No room for ECC bytes\n"); err_no = -EINVAL; - goto err_no_ecc_room; + goto err; } pmecc_config_ecc_layout(&atmel_pmecc_oobinfo, mtd->oobsize, @@ -993,7 +981,7 @@ static int __init atmel_pmecc_nand_init_params(struct platform_device *pdev, if (err_no) { dev_err(host->dev, "Cannot allocate memory for PMECC computation!\n"); - goto err_pmecc_data_alloc; + goto err; } nand_chip->ecc.read_page = atmel_nand_pmecc_read_page; @@ -1003,15 +991,7 @@ static int __init atmel_pmecc_nand_init_params(struct platform_device *pdev, return 0; -err_pmecc_data_alloc: -err_no_ecc_room: -err_pmloc_ioremap: - iounmap(host->ecc); - if (host->pmerrloc_base) - iounmap(host->pmerrloc_base); - if (host->pmecc_rom_base) - iounmap(host->pmecc_rom_base); -err_pmecc_ioremap: +err: return err_no; } @@ -1315,7 +1295,7 @@ static int __init atmel_hw_nand_init_params(struct platform_device *pdev, return 0; } - host->ecc = ioremap(regs->start, resource_size(regs)); + host->ecc = devm_request_and_ioremap(&pdev->dev, regs); if (host->ecc == NULL) { dev_err(host->dev, "ioremap failed\n"); return -EIO; @@ -1380,20 +1360,19 @@ static int __init atmel_nand_probe(struct platform_device *pdev) } /* Allocate memory for the device structure (and zero it) */ - host = kzalloc(sizeof(struct atmel_nand_host), GFP_KERNEL); + host = devm_kzalloc(&pdev->dev, sizeof(*host), GFP_KERNEL); if (!host) { printk(KERN_ERR "atmel_nand: failed to allocate device structure.\n"); return -ENOMEM; } - host->io_phys = (dma_addr_t)mem->start; - - host->io_base = ioremap(mem->start, resource_size(mem)); + host->io_base = devm_request_and_ioremap(&pdev->dev, mem); if (host->io_base == NULL) { printk(KERN_ERR "atmel_nand: ioremap failed\n"); res = -EIO; goto err_nand_ioremap; } + host->io_phys = (dma_addr_t)mem->start; mtd = &host->mtd; nand_chip = &host->nand_chip; @@ -1401,7 +1380,7 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if (pdev->dev.of_node) { res = atmel_of_init_port(host, pdev->dev.of_node); if (res) - goto err_ecc_ioremap; + goto err_nand_ioremap; } else { memcpy(&host->board, pdev->dev.platform_data, sizeof(struct atmel_nand_data)); @@ -1420,44 +1399,42 @@ static int __init atmel_nand_probe(struct platform_device *pdev) if (IS_ERR(pinctrl)) { dev_err(host->dev, "Failed to request pinctrl\n"); res = PTR_ERR(pinctrl); - goto err_ecc_ioremap; + goto err_nand_ioremap; } if (gpio_is_valid(host->board.rdy_pin)) { - res = gpio_request(host->board.rdy_pin, "nand_rdy"); + res = devm_gpio_request(&pdev->dev, + host->board.rdy_pin, "nand_rdy"); if (res < 0) { dev_err(&pdev->dev, - "can't request rdy gpio %d\n", - host->board.rdy_pin); - goto err_ecc_ioremap; + "can't request rdy gpio %d\n", host->board.rdy_pin); + goto err_nand_ioremap; } res = gpio_direction_input(host->board.rdy_pin); if (res < 0) { dev_err(&pdev->dev, - "can't request input direction rdy gpio %d\n", - host->board.rdy_pin); - goto err_ecc_ioremap; + "can't request input direction rdy gpio %d\n", host->board.rdy_pin); + goto err_nand_ioremap; } nand_chip->dev_ready = atmel_nand_device_ready; } if (gpio_is_valid(host->board.enable_pin)) { - res = gpio_request(host->board.enable_pin, "nand_enable"); + res = devm_gpio_request(&pdev->dev, + host->board.enable_pin, "nand_enable"); if (res < 0) { dev_err(&pdev->dev, - "can't request enable gpio %d\n", - host->board.enable_pin); - goto err_ecc_ioremap; + "can't request enable gpio %d\n", host->board.enable_pin); + goto err_nand_ioremap; } res = gpio_direction_output(host->board.enable_pin, 1); if (res < 0) { dev_err(&pdev->dev, - "can't request output direction enable gpio %d\n", - host->board.enable_pin); - goto err_ecc_ioremap; + "can't request output direction enable gpio %d\n", host->board.enable_pin); + goto err_nand_ioremap; } } @@ -1474,19 +1451,18 @@ static int __init atmel_nand_probe(struct platform_device *pdev) atmel_nand_enable(host); if (gpio_is_valid(host->board.det_pin)) { - res = gpio_request(host->board.det_pin, "nand_det"); + res = devm_gpio_request(&pdev->dev, + host->board.det_pin, "nand_det"); if (res < 0) { dev_err(&pdev->dev, - "can't request det gpio %d\n", - host->board.det_pin); + "can't request det gpio %d\n", host->board.det_pin); goto err_no_card; } res = gpio_direction_input(host->board.det_pin); if (res < 0) { dev_err(&pdev->dev, - "can't request input direction det gpio %d\n", - host->board.det_pin); + "can't request input direction det gpio %d\n", host->board.det_pin); goto err_no_card; } @@ -1552,16 +1528,8 @@ static int __init atmel_nand_probe(struct platform_device *pdev) return res; err_scan_tail: - if (host->has_pmecc && host->nand_chip.ecc.mode == NAND_ECC_HW) { + if (host->has_pmecc && host->nand_chip.ecc.mode == NAND_ECC_HW) pmecc_writel(host->ecc, CTRL, PMECC_CTRL_DISABLE); - pmecc_data_free(host); - } - if (host->ecc) - iounmap(host->ecc); - if (host->pmerrloc_base) - iounmap(host->pmerrloc_base); - if (host->pmecc_rom_base) - iounmap(host->pmecc_rom_base); err_hw_ecc: err_scan_ident: err_no_card: @@ -1569,10 +1537,7 @@ err_no_card: platform_set_drvdata(pdev, NULL); if (host->dma_chan) dma_release_channel(host->dma_chan); -err_ecc_ioremap: - iounmap(host->io_base); err_nand_ioremap: - kfree(host); return res; } @@ -1592,31 +1557,11 @@ static int __exit atmel_nand_remove(struct platform_device *pdev) pmecc_writel(host->ecc, CTRL, PMECC_CTRL_DISABLE); pmerrloc_writel(host->pmerrloc_base, ELDIS, PMERRLOC_DISABLE); - pmecc_data_free(host); } - if (gpio_is_valid(host->board.det_pin)) - gpio_free(host->board.det_pin); - - if (gpio_is_valid(host->board.enable_pin)) - gpio_free(host->board.enable_pin); - - if (gpio_is_valid(host->board.rdy_pin)) - gpio_free(host->board.rdy_pin); - - if (host->ecc) - iounmap(host->ecc); - if (host->pmecc_rom_base) - iounmap(host->pmecc_rom_base); - if (host->pmerrloc_base) - iounmap(host->pmerrloc_base); - if (host->dma_chan) dma_release_channel(host->dma_chan); - iounmap(host->io_base); - kfree(host); - return 0; }