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ata: sata_dwc_460ex: use devm_ioremap 

This simplifies error handling and cleanup by using devm to manage
IO mappings.

Tested-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Mans Rullgard <mans@mansr.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
This commit is contained in:
Andy Shevchenko 2016-04-26 12:03:22 +03:00 committed by Tejun Heo
parent af50f3a8b6
commit 73ec1b5ab3
1 changed files with 11 additions and 19 deletions
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30
drivers/ata/sata_dwc_460ex.c
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@ -139,7 +139,6 @@ struct sata_dwc_device {
struct device *dev; /* generic device struct */
struct ata_probe_ent *pe; /* ptr to probe-ent */
struct ata_host *host;
u8 __iomem *reg_base;
struct sata_dwc_regs __iomem *sata_dwc_regs; /* DW SATA specific */
u32 sactive_issued;
u32 sactive_queued;
@ -241,7 +240,7 @@ static int sata_dwc_dma_init_old(struct platform_device *pdev,
struct sata_dwc_device *hsdev)
{
struct device_node *np = pdev->dev.of_node;
int err;
struct resource *res;
hsdev->dma = devm_kzalloc(&pdev->dev, sizeof(*hsdev->dma), GFP_KERNEL);
if (!hsdev->dma)
@ -257,21 +256,16 @@ static int sata_dwc_dma_init_old(struct platform_device *pdev,
}
/* Get physical SATA DMA register base address */
hsdev->dma->regs = of_iomap(np, 1);
if (!hsdev->dma->regs) {
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
hsdev->dma->regs = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(hsdev->dma->regs)) {
dev_err(&pdev->dev,
"ioremap failed for AHBDMA register address\n");
return -ENODEV;
return PTR_ERR(hsdev->dma->regs);
}
/* Initialize AHB DMAC */
err = dw_dma_probe(hsdev->dma);
if (err) {
iounmap(hsdev->dma->regs);
return err;
}
return 0;
return dw_dma_probe(hsdev->dma);
}
static void sata_dwc_dma_exit_old(struct sata_dwc_device *hsdev)
@ -280,7 +274,6 @@ static void sata_dwc_dma_exit_old(struct sata_dwc_device *hsdev)
return;
dw_dma_remove(hsdev->dma);
iounmap(hsdev->dma->regs);
}
#endif
@ -1219,6 +1212,7 @@ static int sata_dwc_probe(struct platform_device *ofdev)
struct ata_port_info pi = sata_dwc_port_info[0];
const struct ata_port_info *ppi[] = { &pi, NULL };
struct device_node *np = ofdev->dev.of_node;
struct resource *res;
/* Allocate DWC SATA device */
host = ata_host_alloc_pinfo(&ofdev->dev, ppi, SATA_DWC_MAX_PORTS);
@ -1229,13 +1223,13 @@ static int sata_dwc_probe(struct platform_device *ofdev)
host->private_data = hsdev;
/* Ioremap SATA registers */
base = of_iomap(np, 0);
if (!base) {
res = platform_get_resource(ofdev, IORESOURCE_MEM, 0);
base = devm_ioremap_resource(&ofdev->dev, res);
if (IS_ERR(base)) {
dev_err(&ofdev->dev,
"ioremap failed for SATA register address\n");
return -ENODEV;
return PTR_ERR(base);
}
hsdev->reg_base = base;
dev_dbg(&ofdev->dev, "ioremap done for SATA register address\n");
/* Synopsys DWC SATA specific Registers */
@ -1299,7 +1293,6 @@ static int sata_dwc_probe(struct platform_device *ofdev)
error_out:
phy_exit(hsdev->phy);
iounmap(base);
return err;
}
@ -1318,7 +1311,6 @@ static int sata_dwc_remove(struct platform_device *ofdev)
sata_dwc_dma_exit_old(hsdev);
#endif
iounmap(hsdev->reg_base);
dev_dbg(&ofdev->dev, "done\n");
return 0;
}