sata_dwc_460ex: convert to devm_kzalloc in ->probe()
The patch converts ->probe() to use devm_kzalloc that simplifies error path.
Note that ata_host_alloc_pinfo() has been using device resources already.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c
index 169cbca..fdb0f28 100644
--- a/drivers/ata/sata_dwc_460ex.c
+++ b/drivers/ata/sata_dwc_460ex.c
@@ -1676,10 +1676,13 @@
u32 dma_chan;
/* Allocate DWC SATA device */
- hsdev = kzalloc(sizeof(*hsdev), GFP_KERNEL);
- if (hsdev == NULL)
+ host = ata_host_alloc_pinfo(&ofdev->dev, ppi, SATA_DWC_MAX_PORTS);
+ hsdev = devm_kzalloc(&ofdev->dev, sizeof(*hsdev), GFP_KERNEL);
+ if (!host || !hsdev)
return -ENOMEM;
+ host->private_data = hsdev;
+
if (of_property_read_u32(np, "dma-channel", &dma_chan)) {
dev_warn(&ofdev->dev, "no dma-channel property set."
" Use channel 0\n");
@@ -1692,8 +1695,7 @@
if (!base) {
dev_err(&ofdev->dev, "ioremap failed for SATA register"
" address\n");
- err = -ENODEV;
- goto error_kmalloc;
+ return -ENODEV;
}
hsdev->reg_base = base;
dev_dbg(&ofdev->dev, "ioremap done for SATA register address\n");
@@ -1701,16 +1703,6 @@
/* Synopsys DWC SATA specific Registers */
hsdev->sata_dwc_regs = (void *__iomem)(base + SATA_DWC_REG_OFFSET);
- /* Allocate and fill host */
- host = ata_host_alloc_pinfo(&ofdev->dev, ppi, SATA_DWC_MAX_PORTS);
- if (!host) {
- dev_err(&ofdev->dev, "ata_host_alloc_pinfo failed\n");
- err = -ENOMEM;
- goto error_iomap;
- }
-
- host->private_data = hsdev;
-
/* Setup port */
host->ports[0]->ioaddr.cmd_addr = base;
host->ports[0]->ioaddr.scr_addr = base + SATA_DWC_SCR_OFFSET;
@@ -1778,8 +1770,6 @@
iounmap((void __iomem *)host_pvt.sata_dma_regs);
error_iomap:
iounmap(base);
-error_kmalloc:
- kfree(hsdev);
return err;
}
@@ -1796,8 +1786,6 @@
iounmap((void __iomem *)host_pvt.sata_dma_regs);
iounmap(hsdev->reg_base);
- kfree(hsdev);
- kfree(host);
dev_dbg(&ofdev->dev, "done\n");
return 0;
}