From: Baolin Wang <baolin.wang@linaro.org> To: linus.walleij@linaro.org, ohad@wizery.com, bjorn.andersson@linaro.org Cc: baolin.wang@linaro.org, linux-arm-kernel@lists.infradead.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/3] hwspinlock: u8500_hsem: Change to use devm_platform_ioremap_resource() Date: Fri, 27 Sep 2019 16:27:41 +0800 [thread overview] Message-ID: <e991666ead56cac30a7ef9cec85e802b57d47458.1569572448.git.baolin.wang@linaro.org> (raw) In-Reply-To: <cover.1569572448.git.baolin.wang@linaro.org> In-Reply-To: <cover.1569572448.git.baolin.wang@linaro.org> Use the new helper that wraps the calls to platform_get_resource() and devm_ioremap_resource() together, which can simpify the code. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> --- drivers/hwspinlock/u8500_hsem.c | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/drivers/hwspinlock/u8500_hsem.c b/drivers/hwspinlock/u8500_hsem.c index 572ca79..c247a87 100644 --- a/drivers/hwspinlock/u8500_hsem.c +++ b/drivers/hwspinlock/u8500_hsem.c @@ -88,7 +88,6 @@ static int u8500_hsem_probe(struct platform_device *pdev) struct hwspinlock_pdata *pdata = pdev->dev.platform_data; struct hwspinlock_device *bank; struct hwspinlock *hwlock; - struct resource *res; void __iomem *io_base; int i, ret, num_locks = U8500_MAX_SEMAPHORE; ulong val; @@ -96,13 +95,9 @@ static int u8500_hsem_probe(struct platform_device *pdev) if (!pdata) return -ENODEV; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENODEV; - - io_base = ioremap(res->start, resource_size(res)); - if (!io_base) - return -ENOMEM; + io_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(io_base)) + return PTR_ERR(io_base); /* make sure protocol 1 is selected */ val = readl(io_base + HSEM_CTRL_REG); @@ -112,10 +107,8 @@ static int u8500_hsem_probe(struct platform_device *pdev) writel(0xFFFF, io_base + HSEM_ICRALL); bank = kzalloc(struct_size(bank, lock, num_locks), GFP_KERNEL); - if (!bank) { - ret = -ENOMEM; - goto iounmap_base; - } + if (!bank) + return -ENOMEM; platform_set_drvdata(pdev, bank); @@ -135,8 +128,6 @@ static int u8500_hsem_probe(struct platform_device *pdev) reg_fail: pm_runtime_disable(&pdev->dev); kfree(bank); -iounmap_base: - iounmap(io_base); return ret; } @@ -156,7 +147,6 @@ static int u8500_hsem_remove(struct platform_device *pdev) } pm_runtime_disable(&pdev->dev); - iounmap(io_base); kfree(bank); return 0; -- 1.7.9.5
WARNING: multiple messages have this Message-ID (diff)
From: Baolin Wang <baolin.wang@linaro.org> To: linus.walleij@linaro.org, ohad@wizery.com, bjorn.andersson@linaro.org Cc: linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, baolin.wang@linaro.org Subject: [PATCH 1/3] hwspinlock: u8500_hsem: Change to use devm_platform_ioremap_resource() Date: Fri, 27 Sep 2019 16:27:41 +0800 [thread overview] Message-ID: <e991666ead56cac30a7ef9cec85e802b57d47458.1569572448.git.baolin.wang@linaro.org> (raw) In-Reply-To: <cover.1569572448.git.baolin.wang@linaro.org> In-Reply-To: <cover.1569572448.git.baolin.wang@linaro.org> Use the new helper that wraps the calls to platform_get_resource() and devm_ioremap_resource() together, which can simpify the code. Signed-off-by: Baolin Wang <baolin.wang@linaro.org> --- drivers/hwspinlock/u8500_hsem.c | 20 +++++--------------- 1 file changed, 5 insertions(+), 15 deletions(-) diff --git a/drivers/hwspinlock/u8500_hsem.c b/drivers/hwspinlock/u8500_hsem.c index 572ca79..c247a87 100644 --- a/drivers/hwspinlock/u8500_hsem.c +++ b/drivers/hwspinlock/u8500_hsem.c @@ -88,7 +88,6 @@ static int u8500_hsem_probe(struct platform_device *pdev) struct hwspinlock_pdata *pdata = pdev->dev.platform_data; struct hwspinlock_device *bank; struct hwspinlock *hwlock; - struct resource *res; void __iomem *io_base; int i, ret, num_locks = U8500_MAX_SEMAPHORE; ulong val; @@ -96,13 +95,9 @@ static int u8500_hsem_probe(struct platform_device *pdev) if (!pdata) return -ENODEV; - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!res) - return -ENODEV; - - io_base = ioremap(res->start, resource_size(res)); - if (!io_base) - return -ENOMEM; + io_base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(io_base)) + return PTR_ERR(io_base); /* make sure protocol 1 is selected */ val = readl(io_base + HSEM_CTRL_REG); @@ -112,10 +107,8 @@ static int u8500_hsem_probe(struct platform_device *pdev) writel(0xFFFF, io_base + HSEM_ICRALL); bank = kzalloc(struct_size(bank, lock, num_locks), GFP_KERNEL); - if (!bank) { - ret = -ENOMEM; - goto iounmap_base; - } + if (!bank) + return -ENOMEM; platform_set_drvdata(pdev, bank); @@ -135,8 +128,6 @@ static int u8500_hsem_probe(struct platform_device *pdev) reg_fail: pm_runtime_disable(&pdev->dev); kfree(bank); -iounmap_base: - iounmap(io_base); return ret; } @@ -156,7 +147,6 @@ static int u8500_hsem_remove(struct platform_device *pdev) } pm_runtime_disable(&pdev->dev); - iounmap(io_base); kfree(bank); return 0; -- 1.7.9.5 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-09-27 8:27 UTC|newest] Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-09-27 8:27 [PATCH 0/3] Optimize the u8500_hsem hwlock driver Baolin Wang 2019-09-27 8:27 ` Baolin Wang 2019-09-27 8:27 ` Baolin Wang [this message] 2019-09-27 8:27 ` [PATCH 1/3] hwspinlock: u8500_hsem: Change to use devm_platform_ioremap_resource() Baolin Wang 2019-10-04 21:35 ` Linus Walleij 2019-10-04 21:35 ` Linus Walleij 2019-09-27 8:27 ` [PATCH 2/3] hwspinlock: u8500_hsem: Use devm_kzalloc() to allocate memory Baolin Wang 2019-09-27 8:27 ` Baolin Wang 2019-10-04 21:36 ` Linus Walleij 2019-10-04 21:36 ` Linus Walleij 2019-09-27 8:27 ` [PATCH 3/3] hwspinlock: u8500_hsem: Use devm_hwspin_lock_register() to register hwlock controller Baolin Wang 2019-09-27 8:27 ` Baolin Wang 2019-10-04 21:38 ` Linus Walleij 2019-10-04 21:38 ` Linus Walleij 2019-10-05 4:01 ` [PATCH 0/3] Optimize the u8500_hsem hwlock driver Bjorn Andersson 2019-10-05 4:01 ` Bjorn Andersson 2019-10-05 4:01 ` Bjorn Andersson
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