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path: root/drivers/net/can/c_can
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Diffstat (limited to 'drivers/net/can/c_can')
-rw-r--r--drivers/net/can/c_can/c_can_platform.c51
1 files changed, 15 insertions, 36 deletions
diff --git a/drivers/net/can/c_can/c_can_platform.c b/drivers/net/can/c_can/c_can_platform.c
index 399844809bbe..19c86b94a40e 100644
--- a/drivers/net/can/c_can/c_can_platform.c
+++ b/drivers/net/can/c_can/c_can_platform.c
@@ -269,30 +269,22 @@ static int c_can_plat_probe(struct platform_device *pdev)
/* get the appropriate clk */
clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(clk)) {
- ret = PTR_ERR(clk);
- goto exit;
- }
+ if (IS_ERR(clk))
+ return PTR_ERR(clk);
/* get the platform data */
irq = platform_get_irq(pdev, 0);
- if (irq < 0) {
- ret = irq;
- goto exit;
- }
+ if (irq < 0)
+ return irq;
addr = devm_platform_get_and_ioremap_resource(pdev, 0, &mem);
- if (IS_ERR(addr)) {
- ret = PTR_ERR(addr);
- goto exit;
- }
+ if (IS_ERR(addr))
+ return PTR_ERR(addr);
/* allocate the c_can device */
dev = alloc_c_can_dev(drvdata->msg_obj_num);
- if (!dev) {
- ret = -ENOMEM;
- goto exit;
- }
+ if (!dev)
+ return -ENOMEM;
priv = netdev_priv(dev);
switch (drvdata->id) {
@@ -324,33 +316,22 @@ static int c_can_plat_probe(struct platform_device *pdev)
/* Check if we need custom RAMINIT via syscon. Mostly for TI
* platforms. Only supported with DT boot.
*/
- if (np && of_property_read_bool(np, "syscon-raminit")) {
+ if (np && of_property_present(np, "syscon-raminit")) {
+ unsigned int args[2];
u32 id;
struct c_can_raminit *raminit = &priv->raminit_sys;
ret = -EINVAL;
- raminit->syscon = syscon_regmap_lookup_by_phandle(np,
- "syscon-raminit");
+ raminit->syscon = syscon_regmap_lookup_by_phandle_args(np,
+ "syscon-raminit",
+ 2, args);
if (IS_ERR(raminit->syscon)) {
- /* can fail with -EPROBE_DEFER */
ret = PTR_ERR(raminit->syscon);
- free_c_can_dev(dev);
- return ret;
- }
-
- if (of_property_read_u32_index(np, "syscon-raminit", 1,
- &raminit->reg)) {
- dev_err(&pdev->dev,
- "couldn't get the RAMINIT reg. offset!\n");
goto exit_free_device;
}
- if (of_property_read_u32_index(np, "syscon-raminit", 2,
- &id)) {
- dev_err(&pdev->dev,
- "couldn't get the CAN instance ID\n");
- goto exit_free_device;
- }
+ raminit->reg = args[0];
+ id = args[1];
if (id >= drvdata->raminit_num) {
dev_err(&pdev->dev,
@@ -396,8 +377,6 @@ exit_pm_runtime:
pm_runtime_disable(priv->device);
exit_free_device:
free_c_can_dev(dev);
-exit:
- dev_err(&pdev->dev, "probe failed\n");
return ret;
}