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bf4afc53b7
This was done entirely with mindless brute force, using
git grep -l '\<k[vmz]*alloc_objs*(.*, GFP_KERNEL)' |
xargs sed -i 's/\(alloc_objs*(.*\), GFP_KERNEL)/\1)/'
to convert the new alloc_obj() users that had a simple GFP_KERNEL
argument to just drop that argument.
Note that due to the extreme simplicity of the scripting, any slightly
more complex cases spread over multiple lines would not be triggered:
they definitely exist, but this covers the vast bulk of the cases, and
the resulting diff is also then easier to check automatically.
For the same reason the 'flex' versions will be done as a separate
conversion.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
130 lines
3.1 KiB
C
130 lines
3.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Nano River Technologies viperboard driver
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*
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* This is the core driver for the viperboard. There are cell drivers
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* available for I2C, ADC and both GPIOs. SPI is not yet supported.
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* The drivers do not support all features the board exposes. See user
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* manual of the viperboard.
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*
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* (C) 2012 by Lemonage GmbH
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* Author: Lars Poeschel <poeschel@lemonage.de>
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* All rights reserved.
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*/
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/types.h>
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#include <linux/mutex.h>
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#include <linux/mfd/core.h>
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#include <linux/mfd/viperboard.h>
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#include <linux/usb.h>
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static const struct usb_device_id vprbrd_table[] = {
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{ USB_DEVICE(0x2058, 0x1005) }, /* Nano River Technologies */
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{ } /* Terminating entry */
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};
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MODULE_DEVICE_TABLE(usb, vprbrd_table);
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static const struct mfd_cell vprbrd_devs[] = {
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{
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.name = "viperboard-gpio",
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},
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{
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.name = "viperboard-i2c",
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},
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{
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.name = "viperboard-adc",
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},
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};
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static int vprbrd_probe(struct usb_interface *interface,
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const struct usb_device_id *id)
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{
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struct vprbrd *vb;
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u16 version = 0;
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int pipe, ret;
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/* allocate memory for our device state and initialize it */
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vb = kzalloc_obj(*vb);
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if (!vb)
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return -ENOMEM;
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mutex_init(&vb->lock);
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vb->usb_dev = usb_get_dev(interface_to_usbdev(interface));
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/* save our data pointer in this interface device */
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usb_set_intfdata(interface, vb);
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dev_set_drvdata(&vb->pdev.dev, vb);
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/* get version information, major first, minor then */
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pipe = usb_rcvctrlpipe(vb->usb_dev, 0);
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ret = usb_control_msg(vb->usb_dev, pipe, VPRBRD_USB_REQUEST_MAJOR,
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VPRBRD_USB_TYPE_IN, 0x0000, 0x0000, vb->buf, 1,
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VPRBRD_USB_TIMEOUT_MS);
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if (ret == 1)
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version = vb->buf[0];
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ret = usb_control_msg(vb->usb_dev, pipe, VPRBRD_USB_REQUEST_MINOR,
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VPRBRD_USB_TYPE_IN, 0x0000, 0x0000, vb->buf, 1,
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VPRBRD_USB_TIMEOUT_MS);
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if (ret == 1) {
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version <<= 8;
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version = version | vb->buf[0];
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}
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dev_info(&interface->dev,
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"version %x.%02x found at bus %03d address %03d\n",
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version >> 8, version & 0xff,
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vb->usb_dev->bus->busnum, vb->usb_dev->devnum);
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ret = mfd_add_hotplug_devices(&interface->dev, vprbrd_devs,
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ARRAY_SIZE(vprbrd_devs));
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if (ret != 0) {
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dev_err(&interface->dev, "Failed to add mfd devices to core.");
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goto error;
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}
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return 0;
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error:
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if (vb) {
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usb_put_dev(vb->usb_dev);
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kfree(vb);
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}
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return ret;
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}
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static void vprbrd_disconnect(struct usb_interface *interface)
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{
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struct vprbrd *vb = usb_get_intfdata(interface);
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mfd_remove_devices(&interface->dev);
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usb_set_intfdata(interface, NULL);
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usb_put_dev(vb->usb_dev);
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kfree(vb);
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dev_dbg(&interface->dev, "disconnected\n");
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}
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static struct usb_driver vprbrd_driver = {
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.name = "viperboard",
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.probe = vprbrd_probe,
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.disconnect = vprbrd_disconnect,
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.id_table = vprbrd_table,
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};
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module_usb_driver(vprbrd_driver);
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MODULE_DESCRIPTION("Nano River Technologies viperboard mfd core driver");
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MODULE_AUTHOR("Lars Poeschel <poeschel@lemonage.de>");
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MODULE_LICENSE("GPL");
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