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OpenCloudOS-Kernel
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mmc: set controller name early 

Reorganise code so that mmc_hostname() works directly after allocation.
That way host drivers can use that name for resource allocations and
messages during probing.

Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Pierre Ossman 2008-03-08 23:43:19 +01:00
parent e675349e2b
commit ff3112f5ad
1 changed files with 22 additions and 17 deletions
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39
drivers/mmc/core/host.c
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@ -2,7 +2,7 @@
* linux/drivers/mmc/core/host.c
*
* Copyright (C) 2003 Russell King, All Rights Reserved.
* Copyright (C) 2007 Pierre Ossman
* Copyright (C) 2007-2008 Pierre Ossman
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@ -57,12 +57,25 @@ static DEFINE_SPINLOCK(mmc_host_lock);
*/
struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
{
int err;
struct mmc_host *host;
if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL))
return NULL;
host = kzalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL);
if (!host)
return NULL;
spin_lock(&mmc_host_lock);
err = idr_get_new(&mmc_host_idr, host, &host->index);
spin_unlock(&mmc_host_lock);
if (err)
goto free;
snprintf(host->class_dev.bus_id, BUS_ID_SIZE,
"mmc%d", host->index);
host->parent = dev;
host->class_dev.parent = dev;
host->class_dev.class = &mmc_host_class;
@ -85,6 +98,10 @@ struct mmc_host *mmc_alloc_host(int extra, struct device *dev)
host->max_blk_count = PAGE_CACHE_SIZE / 512;
return host;
free:
kfree(host);
return NULL;
}
EXPORT_SYMBOL(mmc_alloc_host);
@ -104,18 +121,6 @@ int mmc_add_host(struct mmc_host *host)
WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) &&
!host->ops->enable_sdio_irq);
if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL))
return -ENOMEM;
spin_lock(&mmc_host_lock);
err = idr_get_new(&mmc_host_idr, host, &host->index);
spin_unlock(&mmc_host_lock);
if (err)
return err;
snprintf(host->class_dev.bus_id, BUS_ID_SIZE,
"mmc%d", host->index);
led_trigger_register_simple(host->class_dev.bus_id, &host->led);
err = device_add(&host->class_dev);
@ -144,10 +149,6 @@ void mmc_remove_host(struct mmc_host *host)
device_del(&host->class_dev);
led_trigger_unregister_simple(host->led);
spin_lock(&mmc_host_lock);
idr_remove(&mmc_host_idr, host->index);
spin_unlock(&mmc_host_lock);
}
EXPORT_SYMBOL(mmc_remove_host);
@ -160,6 +161,10 @@ EXPORT_SYMBOL(mmc_remove_host);
*/
void mmc_free_host(struct mmc_host *host)
{
spin_lock(&mmc_host_lock);
idr_remove(&mmc_host_idr, host->index);
spin_unlock(&mmc_host_lock);
put_device(&host->class_dev);
}