[PATCH v4 03/22] usb: ulpi: Support device discovery via DT
From: Stephen Boyd <hidden>
Date: 2016-09-12 22:05:16
Also in:
linux-arm-msm, linux-devicetree, lkml
Quoting Stephen Boyd (2016-09-07 14:35:00)
quoted hunk ↗ jump to hunk
@@ -174,6 +219,21 @@ static int ulpi_register(struct device *dev, struct ulpi *ulpi) ulpi->id.product = ulpi_read(ulpi, ULPI_PRODUCT_ID_LOW); ulpi->id.product |= ulpi_read(ulpi, ULPI_PRODUCT_ID_HIGH) << 8; + /* Some ULPI devices don't have a vendor id so rely on OF match */ + if (ulpi->id.vendor == 0) + goto err; + + request_module("ulpi:v%04xp%04x", ulpi->id.vendor, ulpi->id.product); + + return 0; +err: + return of_device_request_module(&ulpi->dev);
This can't return the value of of_device_request_module() because that returns an error if the module is builtin or if module loading is disabled. I'll have to ignore the error here and just return success all the time.