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Commit 07766ab0 authored by Jens Taprogge's avatar Jens Taprogge Committed by Greg Kroah-Hartman
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Staging: ipack: Switch to 8MHz operation before reading ID. 



Reading the ID space at 8 MHz is always supported.  Most carriers will
boot up in 8MHz mode.  Still, play it safe and ensure we are operating at
8Mhz.

Signed-off-by: default avatarJens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: default avatarSamuel Iglesias Gonsálvez <siglesias@igalia.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 939c37a3

drivers/staging/ipack/ipack.c

+8 −3
Original line number Diff line number Diff line
@@ -377,6 +377,9 @@ struct ipack_device *ipack_device_register(struct ipack_bus_device *bus, 
	dev_set_name(&dev->dev,

		     "ipack-dev.%u.%u", dev->bus_nr, dev->slot);



	if (bus->ops->set_clockrate(dev, 8))

		dev_warn(&dev->dev, "failed to switch to 8 MHz operation for reading of device ID.\n");



	ret = ipack_device_read_id(dev);

	if (ret < 0) {

		dev_err(&dev->dev, "error reading device id section.\n");
@@ -385,9 +388,11 @@ struct ipack_device *ipack_device_register(struct ipack_bus_device *bus, 
	}



	/* if the device supports 32 MHz operation, use it. */

	ret = bus->ops->set_clockrate(dev, dev->speed_32mhz ? 32 : 8);

	if (dev->speed_32mhz) {

		ret = bus->ops->set_clockrate(dev, 32);

		if (ret < 0)

		dev_err(&dev->dev, "failed to perform set_clock_rate operation.\n");

			dev_err(&dev->dev, "failed to switch to 32 MHz operation.\n");

	}



	ret = device_register(&dev->dev);

	if (ret < 0) {