diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 17:23:30 -0700 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-04-21 17:23:30 -0700 |
commit | 135cedad7457be6a96d5e151dfd48f7888a75e94 (patch) | |
tree | d2ea838ef41ab7dcb85e655b0e6b6ed585c11fe8 /drivers/mmc/core/host.c | |
parent | 8a3227268877b81096d7b7a841aaf51099ad2068 (diff) | |
parent | e70aa3fac1ac50c7a75ac676a1489dd1ea3b4be5 (diff) |
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/drzeus/mmc: (26 commits)
mmc: sdio_ops.c should #include "sdio_ops.h"
mmc: proper prototypes for mmc_attach_*()
mmc: make __mmc_release_bus() static
sdhci: improve no card, no reset quirk
MMC: OMAP: Do not busy wait for end of command for ever
MMC: OMAP: Start new commands from work queue instead of irq
MMC: OMAP: Lazy clock shutdown
MMC: OMAP: Move failing command abortion to workqueue
MMC: OMAP: Use tasklet instead of workqueue for cover switch notification
MMC: OMAP: Check the get_cover_state function pointer if not set
MMC: OMAP: Using setup_timer instead of init_timer
MMC: OMAP: Abort stuck commands
MMC: OMAP: General cleanup for MMC multislot support
MMC: OMAP: Power functions modified to MMC multislot support
MMC: OMAP: Fix timeout calculation for MMC multislot support
MMC: OMAP: New release dma and abort xfer functions
MMC: OMAP: Add back cover switch support
MMC: OMAP: Introduce new multislot structure and change driver to use it
MMC: OMAP: Remove cover switch handling to allow adding multislot support
MMC: OMAP: Fix the BYTEBLOCK capability removal
...
Diffstat (limited to 'drivers/mmc/core/host.c')
-rw-r--r-- | drivers/mmc/core/host.c | 39 |
1 files changed, 22 insertions, 17 deletions
diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index c65d203a846d..1d795c5379b5 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -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); } |