UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

net: mvneta: use devm_ioremap_resource() instead of of_iomap() 

The mvneta driver currently uses of_iomap(), which has two drawbacks:
it doesn't request the resource, and it isn't devm-style so some error
handling is needed.

This commit switches to use devm_ioremap_resource() instead, which
automatically requests the resource (so the I/O registers region shows
up properly in /proc/iomem), and also is devm-style, which allows to
get rid of some error handling to unmap the I/O registers region.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Thomas Petazzoni 2014-03-27 11:39:29 +01:00 committed by David S. Miller
parent 015f0688f5
commit c3f0dd3899
1 changed files with 7 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/net/ethernet/marvell/mvneta.c
View File

@ -22,6 +22,7 @@
#include <linux/interrupt.h>
#include <net/ip.h>
#include <net/ipv6.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_mdio.h>
@ -2774,6 +2775,7 @@ static void mvneta_port_power_up(struct mvneta_port *pp, int phy_mode)
static int mvneta_probe(struct platform_device *pdev)
{
const struct mbus_dram_target_info *dram_target_info;
struct resource *res;
struct device_node *dn = pdev->dev.of_node;
struct device_node *phy_node;
u32 phy_addr;
@ -2837,9 +2839,10 @@ static int mvneta_probe(struct platform_device *pdev)
clk_prepare_enable(pp->clk);
pp->base = of_iomap(dn, 0);
if (pp->base == NULL) {
err = -ENOMEM;
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
pp->base = devm_ioremap_resource(&pdev->dev, res);
if (IS_ERR(pp->base)) {
err = PTR_ERR(pp->base);
goto err_clk;
}
@ -2847,7 +2850,7 @@ static int mvneta_probe(struct platform_device *pdev)
pp->stats = netdev_alloc_pcpu_stats(struct mvneta_pcpu_stats);
if (!pp->stats) {
err = -ENOMEM;
goto err_unmap;
goto err_clk;
}
dt_mac_addr = of_get_mac_address(dn);
@ -2906,8 +2909,6 @@ err_deinit:
mvneta_deinit(pp);
err_free_stats:
free_percpu(pp->stats);
err_unmap:
iounmap(pp->base);
err_clk:
clk_disable_unprepare(pp->clk);
err_free_irq:
@ -2927,7 +2928,6 @@ static int mvneta_remove(struct platform_device *pdev)
mvneta_deinit(pp);
clk_disable_unprepare(pp->clk);
free_percpu(pp->stats);
iounmap(pp->base);
irq_dispose_mapping(dev->irq);
free_netdev(dev);