Revision 676fc8de319335b840934c57ec75bdbbf049b738 authored by Linus Torvalds on 07 March 2020, 13:59:30 UTC, committed by Linus Torvalds on 07 March 2020, 13:59:30 UTC
Pull sound fixes from Takashi Iwai: "The regular "bump-in-the-middle" updates, containing mostly ASoC- related fixes at this time. All changes are reasonably small. A few entries are for ASoC and ALSA core parts (DAPM, PCM, topology) for followups of the recent changes and potential buffer overflow by snprintf(), while the rest are (both new and old) device-specific fixes for Intel, meson, tas2562, rt1015, as well as the usual HD-audio quirks" * tag 'sound-5.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (25 commits) ALSA: sgio2audio: Remove usage of dropped hw_params/hw_free functions ALSA: hda/realtek - Enable the headset of ASUS B9450FA with ALC294 ALSA: hda/realtek - Fix silent output on Gigabyte X570 Aorus Master ALSA: hda/realtek - Add Headset Button supported for ThinkPad X1 ALSA: hda/realtek - Add Headset Mic supported ASoC: wm8741: Fix typo in Kconfig prompt ASoC: stm32: sai: manage rebind issue ASoC: SOF: Fix snd_sof_ipc_stream_posn() ASoC: rt1015: modify pre-divider for sysclk ASoC: rt1015: add operation callback function for rt1015_dai[] ASoC: soc-component: tidyup snd_soc_pcm_component_sync_stop() ASoC: dapm: Correct DAPM handling of active widgets during shutdown ASoC: tas2562: Fix sample rate error message ASoC: Intel: Skylake: Fix available clock counter incrementation ASoC: soc-pcm/soc-compress: don't use snd_soc_dapm_stream_stop() ASoC: meson: g12a: add tohdmitx reset ASoC: pcm512x: Fix unbalanced regulator enable call in probe error path ASoC: soc-core: fix for_rtd_codec_dai_rollback() macro ASoC: topology: Fix memleak in soc_tplg_manifest_load() ASoC: topology: Fix memleak in soc_tplg_link_elems_load() ...
core.c
// SPDX-License-Identifier: GPL-2.0
/*
* core.c - contains all core device and protocol registration functions
*
* Copyright 2002 Adam Belay <ambx1@neo.rr.com>
*/
#include <linux/pnp.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/init.h>
#include <linux/string.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/dma-mapping.h>
#include "base.h"
static LIST_HEAD(pnp_protocols);
LIST_HEAD(pnp_global);
DEFINE_MUTEX(pnp_lock);
/*
* ACPI or PNPBIOS should tell us about all platform devices, so we can
* skip some blind probes. ISAPNP typically enumerates only plug-in ISA
* devices, not built-in things like COM ports.
*/
int pnp_platform_devices;
EXPORT_SYMBOL(pnp_platform_devices);
void *pnp_alloc(long size)
{
void *result;
result = kzalloc(size, GFP_KERNEL);
if (!result) {
printk(KERN_ERR "pnp: Out of Memory\n");
return NULL;
}
return result;
}
static void pnp_remove_protocol(struct pnp_protocol *protocol)
{
mutex_lock(&pnp_lock);
list_del(&protocol->protocol_list);
mutex_unlock(&pnp_lock);
}
/**
* pnp_protocol_register - adds a pnp protocol to the pnp layer
* @protocol: pointer to the corresponding pnp_protocol structure
*
* Ex protocols: ISAPNP, PNPBIOS, etc
*/
int pnp_register_protocol(struct pnp_protocol *protocol)
{
struct list_head *pos;
int nodenum, ret;
INIT_LIST_HEAD(&protocol->devices);
INIT_LIST_HEAD(&protocol->cards);
nodenum = 0;
mutex_lock(&pnp_lock);
/* assign the lowest unused number */
list_for_each(pos, &pnp_protocols) {
struct pnp_protocol *cur = to_pnp_protocol(pos);
if (cur->number == nodenum) {
pos = &pnp_protocols;
nodenum++;
}
}
protocol->number = nodenum;
dev_set_name(&protocol->dev, "pnp%d", nodenum);
list_add_tail(&protocol->protocol_list, &pnp_protocols);
mutex_unlock(&pnp_lock);
ret = device_register(&protocol->dev);
if (ret)
pnp_remove_protocol(protocol);
return ret;
}
/**
* pnp_protocol_unregister - removes a pnp protocol from the pnp layer
* @protocol: pointer to the corresponding pnp_protocol structure
*/
void pnp_unregister_protocol(struct pnp_protocol *protocol)
{
pnp_remove_protocol(protocol);
device_unregister(&protocol->dev);
}
static void pnp_free_ids(struct pnp_dev *dev)
{
struct pnp_id *id;
struct pnp_id *next;
id = dev->id;
while (id) {
next = id->next;
kfree(id);
id = next;
}
}
void pnp_free_resource(struct pnp_resource *pnp_res)
{
list_del(&pnp_res->list);
kfree(pnp_res);
}
void pnp_free_resources(struct pnp_dev *dev)
{
struct pnp_resource *pnp_res, *tmp;
list_for_each_entry_safe(pnp_res, tmp, &dev->resources, list) {
pnp_free_resource(pnp_res);
}
}
static void pnp_release_device(struct device *dmdev)
{
struct pnp_dev *dev = to_pnp_dev(dmdev);
pnp_free_ids(dev);
pnp_free_resources(dev);
pnp_free_options(dev);
kfree(dev);
}
struct pnp_dev *pnp_alloc_dev(struct pnp_protocol *protocol, int id,
const char *pnpid)
{
struct pnp_dev *dev;
struct pnp_id *dev_id;
dev = kzalloc(sizeof(struct pnp_dev), GFP_KERNEL);
if (!dev)
return NULL;
INIT_LIST_HEAD(&dev->resources);
INIT_LIST_HEAD(&dev->options);
dev->protocol = protocol;
dev->number = id;
dev->dma_mask = DMA_BIT_MASK(24);
dev->dev.parent = &dev->protocol->dev;
dev->dev.bus = &pnp_bus_type;
dev->dev.dma_mask = &dev->dma_mask;
dev->dev.coherent_dma_mask = dev->dma_mask;
dev->dev.release = &pnp_release_device;
dev_set_name(&dev->dev, "%02x:%02x", dev->protocol->number, dev->number);
dev_id = pnp_add_id(dev, pnpid);
if (!dev_id) {
kfree(dev);
return NULL;
}
return dev;
}
static void pnp_delist_device(struct pnp_dev *dev)
{
mutex_lock(&pnp_lock);
list_del(&dev->global_list);
list_del(&dev->protocol_list);
mutex_unlock(&pnp_lock);
}
int __pnp_add_device(struct pnp_dev *dev)
{
int ret;
pnp_fixup_device(dev);
dev->status = PNP_READY;
mutex_lock(&pnp_lock);
list_add_tail(&dev->global_list, &pnp_global);
list_add_tail(&dev->protocol_list, &dev->protocol->devices);
mutex_unlock(&pnp_lock);
ret = device_register(&dev->dev);
if (ret)
pnp_delist_device(dev);
else if (dev->protocol->can_wakeup)
device_set_wakeup_capable(&dev->dev,
dev->protocol->can_wakeup(dev));
return ret;
}
/*
* pnp_add_device - adds a pnp device to the pnp layer
* @dev: pointer to dev to add
*
* adds to driver model, name database, fixups, interface, etc.
*/
int pnp_add_device(struct pnp_dev *dev)
{
int ret;
char buf[128];
int len = 0;
struct pnp_id *id;
if (dev->card)
return -EINVAL;
ret = __pnp_add_device(dev);
if (ret)
return ret;
buf[0] = '\0';
for (id = dev->id; id; id = id->next)
len += scnprintf(buf + len, sizeof(buf) - len, " %s", id->id);
dev_printk(KERN_DEBUG, &dev->dev, "%s device, IDs%s (%s)\n",
dev->protocol->name, buf,
dev->active ? "active" : "disabled");
return 0;
}
void __pnp_remove_device(struct pnp_dev *dev)
{
pnp_delist_device(dev);
device_unregister(&dev->dev);
}
static int __init pnp_init(void)
{
return bus_register(&pnp_bus_type);
}
subsys_initcall(pnp_init);
int pnp_debug;
#if defined(CONFIG_PNP_DEBUG_MESSAGES)
module_param_named(debug, pnp_debug, int, 0644);
#endif
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