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Subject[PATCH 1/7] usb: gadget: udc: atmel: use of_find_matching_node_and_match
Date
From: Claudiu Beznea <claudiu.beznea@microchip.com>

Instead of trying to match every possible compatible use
of_find_matching_node_and_match() and pass the compatible array.

Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
---
drivers/usb/gadget/udc/atmel_usba_udc.c | 24 +++++++++++++++++-------
1 file changed, 17 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/gadget/udc/atmel_usba_udc.c b/drivers/usb/gadget/udc/atmel_usba_udc.c
index 6e0432141c40..32e5b44d9fbd 100644
--- a/drivers/usb/gadget/udc/atmel_usba_udc.c
+++ b/drivers/usb/gadget/udc/atmel_usba_udc.c
@@ -2052,6 +2052,12 @@ static const struct of_device_id atmel_udc_dt_ids[] = {

MODULE_DEVICE_TABLE(of, atmel_udc_dt_ids);

+static const struct of_device_id atmel_pmc_dt_ids[] = {
+ { .compatible = "atmel,at91sam9g45-pmc" },
+ { .compatible = "atmel,at91sam9rl-pmc" },
+ { .compatible = "atmel,at91sam9x5-pmc" },
+};
+
static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev,
struct usba_udc *udc)
{
@@ -2067,13 +2073,17 @@ static struct usba_ep * atmel_udc_of_init(struct platform_device *pdev,
return ERR_PTR(-EINVAL);

udc->errata = match->data;
- udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9g45-pmc");
- if (IS_ERR(udc->pmc))
- udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9rl-pmc");
- if (IS_ERR(udc->pmc))
- udc->pmc = syscon_regmap_lookup_by_compatible("atmel,at91sam9x5-pmc");
- if (udc->errata && IS_ERR(udc->pmc))
- return ERR_CAST(udc->pmc);
+ if (udc->errata) {
+ pp = of_find_matching_node_and_match(NULL, atmel_pmc_dt_ids,
+ NULL);
+ if (!pp)
+ return ERR_PTR(-ENODEV);
+
+ udc->pmc = syscon_node_to_regmap(pp);
+ of_node_put(pp);
+ if (IS_ERR(udc->pmc))
+ return ERR_CAST(udc->pmc);
+ }

udc->num_ep = 0;

--
2.17.1
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