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staging: most: remove struct device core driver 

This patch removes the device from the MOST core driver and uses the
device from the adapter driver.

Signed-off-by: Christian Gromm <christian.gromm@microchip.com>
Link: https://lore.kernel.org/r/1579793906-5054-4-git-send-email-christian.gromm@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Christian Gromm 2020-01-23 16:38:19 +01:00 committed by Greg Kroah-Hartman
parent 2485055394
commit 6a82c77581
2 changed files with 19 additions and 34 deletions
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52
drivers/staging/most/core.c
View File

@ -30,7 +30,6 @@ static struct ida mdev_id;
static int dummy_num_buffers;
static struct mostcore {
struct device dev;
struct device_driver drv;
struct bus_type bus;
struct list_head comp_list;
@ -151,7 +150,7 @@ static void flush_channel_fifos(struct most_channel *c)
spin_unlock_irqrestore(&c->fifo_lock, hf_flags);
if (unlikely((!list_empty(&c->fifo) || !list_empty(&c->halt_fifo))))
dev_warn(&mc.dev, "fifo | trash fifo not empty\n");
dev_warn(&c->dev, "fifo | trash fifo not empty\n");
}
/**
@ -624,7 +623,7 @@ int most_set_cfg_datatype(char *mdev, char *mdev_ch, char *buf)
}
if (i == ARRAY_SIZE(ch_data_type))
dev_warn(&mc.dev, "invalid attribute settings\n");
dev_warn(&c->dev, "invalid attribute settings\n");
return 0;
}
@ -643,7 +642,7 @@ int most_set_cfg_direction(char *mdev, char *mdev_ch, char *buf)
} else if (!strcmp(buf, "tx")) {
c->cfg.direction = MOST_CH_TX;
} else {
dev_err(&mc.dev, "Invalid direction\n");
dev_err(&c->dev, "Invalid direction\n");
return -ENODATA;
}
return 0;
@ -796,7 +795,7 @@ static int hdm_enqueue_thread(void *data)
mutex_unlock(&c->nq_mutex);
if (unlikely(ret)) {
dev_err(&mc.dev, "hdm enqueue failed\n");
dev_err(&c->dev, "hdm enqueue failed\n");
nq_hdm_mbo(mbo);
c->hdm_enqueue_task = NULL;
return 0;
@ -943,7 +942,7 @@ static void most_write_completion(struct mbo *mbo)
c = mbo->context;
if (mbo->status == MBO_E_INVAL)
dev_warn(&mc.dev, "Tx MBO status: invalid\n");
dev_warn(&c->dev, "Tx MBO status: invalid\n");
if (unlikely(c->is_poisoned || (mbo->status == MBO_E_CLOSE)))
trash_mbo(mbo);
else
@ -1102,14 +1101,14 @@ int most_start_channel(struct most_interface *iface, int id,
goto out; /* already started by another component */
if (!try_module_get(iface->mod)) {
dev_err(&mc.dev, "failed to acquire HDM lock\n");
dev_err(&c->dev, "failed to acquire HDM lock\n");
mutex_unlock(&c->start_mutex);
return -ENOLCK;
}
c->cfg.extra_len = 0;
if (c->iface->configure(c->iface, c->channel_id, &c->cfg)) {
dev_err(&mc.dev, "channel configuration failed. Go check settings...\n");
dev_err(&c->dev, "channel configuration failed. Go check settings...\n");
ret = -EINVAL;
goto err_put_module;
}
@ -1163,7 +1162,7 @@ int most_stop_channel(struct most_interface *iface, int id,
struct most_channel *c;
if (unlikely((!iface) || (id >= iface->num_channels) || (id < 0))) {
dev_err(&mc.dev, "Bad interface or index out of range\n");
pr_err("Bad interface or index out of range\n");
return -EINVAL;
}
c = iface->p->channel[id];
@ -1183,7 +1182,7 @@ int most_stop_channel(struct most_interface *iface, int id,
c->is_poisoned = true;
if (c->iface->poison_channel(c->iface, c->channel_id)) {
dev_err(&mc.dev, "Cannot stop channel %d of mdev %s\n", c->channel_id,
dev_err(&c->dev, "Cannot stop channel %d of mdev %s\n", c->channel_id,
c->iface->description);
mutex_unlock(&c->start_mutex);
return -EAGAIN;
@ -1193,7 +1192,7 @@ int most_stop_channel(struct most_interface *iface, int id,
#ifdef CMPL_INTERRUPTIBLE
if (wait_for_completion_interruptible(&c->cleanup)) {
dev_err(&mc.dev, "Interrupted while clean up ch %d\n", c->channel_id);
dev_err(&c->dev, "Interrupted while clean up ch %d\n", c->channel_id);
mutex_unlock(&c->start_mutex);
return -EINTR;
}
@ -1219,7 +1218,7 @@ EXPORT_SYMBOL_GPL(most_stop_channel);
int most_register_component(struct most_component *comp)
{
if (!comp) {
dev_err(&mc.dev, "Bad component\n");
pr_err("Bad component\n");
return -EINVAL;
}
list_add_tail(&comp->list, &mc.comp_list);
@ -1252,7 +1251,7 @@ static int disconnect_channels(struct device *dev, void *data)
int most_deregister_component(struct most_component *comp)
{
if (!comp) {
dev_err(&mc.dev, "Bad component\n");
pr_err("Bad component\n");
return -EINVAL;
}
@ -1284,13 +1283,13 @@ int most_register_interface(struct most_interface *iface)
if (!iface || !iface->enqueue || !iface->configure ||
!iface->poison_channel || (iface->num_channels > MAX_CHANNELS)) {
dev_err(&mc.dev, "Bad interface or channel overflow\n");
dev_err(iface->dev, "Bad interface or channel overflow\n");
return -EINVAL;
}
id = ida_simple_get(&mdev_id, 0, 0, GFP_KERNEL);
if (id < 0) {
dev_err(&mc.dev, "Failed to alloc mdev ID\n");
dev_err(iface->dev, "Failed to alloc mdev ID\n");
return id;
}
@ -1304,11 +1303,10 @@ int most_register_interface(struct most_interface *iface)
iface->p->dev_id = id;
strscpy(iface->p->name, iface->description, sizeof(iface->p->name));
iface->dev->bus = &mc.bus;
iface->dev->parent = &mc.dev;
iface->dev->groups = interface_attr_groups;
dev_set_drvdata(iface->dev, iface);
if (device_register(iface->dev)) {
dev_err(&mc.dev, "registering iface->dev failed\n");
dev_err(iface->dev, "registering iface->dev failed\n");
kfree(iface->p);
put_device(iface->dev);
ida_simple_remove(&mdev_id, id);
@ -1352,7 +1350,7 @@ int most_register_interface(struct most_interface *iface)
mutex_init(&c->nq_mutex);
list_add_tail(&c->list, &iface->p->channel_list);
if (device_register(&c->dev)) {
dev_err(&mc.dev, "registering c->dev failed\n");
dev_err(&c->dev, "registering c->dev failed\n");
goto err_free_most_channel;
}
}
@ -1452,11 +1450,6 @@ void most_resume_enqueue(struct most_interface *iface, int id)
}
EXPORT_SYMBOL_GPL(most_resume_enqueue);
static void release_most_sub(struct device *dev)
{
dev_info(&mc.dev, "releasing most_subsystem\n");
}
static int __init most_init(void)
{
int err;
@ -1472,25 +1465,17 @@ static int __init most_init(void)
err = bus_register(&mc.bus);
if (err) {
dev_err(&mc.dev, "Cannot register most bus\n");
pr_err("Cannot register most bus\n");
return err;
}
err = driver_register(&mc.drv);
if (err) {
dev_err(&mc.dev, "Cannot register core driver\n");
pr_err("Cannot register core driver\n");
goto err_unregister_bus;
}
mc.dev.init_name = "most_bus";
mc.dev.release = release_most_sub;
if (device_register(&mc.dev)) {
err = -ENOMEM;
goto err_unregister_driver;
}
configfs_init();
return 0;
err_unregister_driver:
driver_unregister(&mc.drv);
err_unregister_bus:
bus_unregister(&mc.bus);
return err;
@ -1498,7 +1483,6 @@ err_unregister_bus:
static void __exit most_exit(void)
{
device_unregister(&mc.dev);
driver_unregister(&mc.drv);
bus_unregister(&mc.bus);
ida_destroy(&mdev_id);

1
drivers/staging/most/dim2/dim2.c
View File

@ -856,6 +856,7 @@ static int dim2_probe(struct platform_device *pdev)
dev->most_iface.driver_dev = &pdev->dev;
dev->most_iface.dev = &dev->dev;
dev->dev.init_name = "dim2_state";
dev->dev.parent = &pdev->dev;
ret = most_register_interface(&dev->most_iface);
if (ret) {