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soc: ti: smartreflex: Use platform_get_irq_optional() to get the interrupt

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platform_get_resource(pdev, IORESOURCE_IRQ, ..) relies on static
allocation of IRQ resources in DT core code, this causes an issue
when using hierarchical interrupt domains using "interrupts" property
in the node as this bypasses the hierarchical setup and messes up the
irq chaining.

In preparation for removal of static setup of IRQ resource from DT core
code use platform_get_irq_optional().

While at it return 0 instead of returning ret in the probe success path.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Signed-off-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220105180323.8563-1-prabhakar.mahadev-lad.rj@bp.renesas.com
This commit is contained in:
Lad Prabhakar 2022-01-05 18:03:22 +00:00 committed by Nishanth Menon
parent a8eba8dde5
commit 001d7c8370
1 changed files with 7 additions and 6 deletions
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13
drivers/soc/ti/smartreflex.c
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@ -819,7 +819,7 @@ static int omap_sr_probe(struct platform_device *pdev)
{
struct omap_sr *sr_info;
struct omap_sr_data *pdata = pdev->dev.platform_data;
struct resource *mem, *irq;
struct resource *mem;
struct dentry *nvalue_dir;
int i, ret = 0;
@ -844,7 +844,11 @@ static int omap_sr_probe(struct platform_device *pdev)
if (IS_ERR(sr_info->base))
return PTR_ERR(sr_info->base);
irq = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
ret = platform_get_irq_optional(pdev, 0);
if (ret < 0 && ret != -ENXIO)
return dev_err_probe(&pdev->dev, ret, "failed to get IRQ resource\n");
if (ret > 0)
sr_info->irq = ret;
sr_info->fck = devm_clk_get(pdev->dev.parent, "fck");
if (IS_ERR(sr_info->fck))
@ -870,9 +874,6 @@ static int omap_sr_probe(struct platform_device *pdev)
sr_info->autocomp_active = false;
sr_info->ip_type = pdata->ip_type;
if (irq)
sr_info->irq = irq->start;
sr_set_clk_length(sr_info);
list_add(&sr_info->node, &sr_list);
@ -926,7 +927,7 @@ static int omap_sr_probe(struct platform_device *pdev)
}
return ret;
return 0;
err_debugfs:
debugfs_remove_recursive(sr_info->dbg_dir);