Re: [PATCH v11 10/27] iommu/exynos: use managed device helper functions

From: Tomasz Figa
Date: Fri Mar 14 2014 - 09:28:52 EST


Hi KyongHo,

On 14.03.2014 06:05, Cho KyongHo wrote:
This patch uses managed device helper functions in the probe().

Signed-off-by: Cho KyongHo <pullip.cho@xxxxxxxxxxx>
---
drivers/iommu/exynos-iommu.c | 64 +++++++++++++++++-------------------------
1 file changed, 26 insertions(+), 38 deletions(-)

diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 36e6b73..33b424d 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -499,51 +499,48 @@ void exynos_sysmmu_tlb_invalidate(struct device *dev)

static int exynos_sysmmu_probe(struct platform_device *pdev)
{
- int ret;
+ int irq, ret;
struct device *dev = &pdev->dev;
struct sysmmu_drvdata *data;
struct resource *res;

- data = kzalloc(sizeof(*data), GFP_KERNEL);
- if (!data) {
- dev_dbg(dev, "Not enough memory\n");
- ret = -ENOMEM;
- goto err_alloc;
- }
+ data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
- dev_dbg(dev, "Unable to find IOMEM region\n");
- ret = -ENOENT;
- goto err_init;
+ dev_err(dev, "Unable to find IOMEM region\n");
+ return -ENOENT;
}

No need to check for error and print message, because devm_ioremap_resource() already checks the passed resource and handles error cases.

Best regards,
Tomasz
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/