#include <linux/err.h>
#include <linux/idr.h>
#include <linux/pagemap.h>
+#include <linux/leds.h>
#include <linux/mmc/host.h>
{
struct mmc_host *host;
- host = kmalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL);
+ host = kzalloc(sizeof(struct mmc_host) + extra, GFP_KERNEL);
if (!host)
return NULL;
- memset(host, 0, sizeof(struct mmc_host) + extra);
-
host->parent = dev;
host->class_dev.parent = dev;
host->class_dev.class = &mmc_host_class;
/**
* mmc_add_host - initialise host hardware
* @host: mmc host
+ *
+ * Register the host with the driver model. The host must be
+ * prepared to start servicing requests before this function
+ * completes.
*/
int mmc_add_host(struct mmc_host *host)
{
int err;
+ WARN_ON((host->caps & MMC_CAP_SDIO_IRQ) &&
+ !host->ops->enable_sdio_irq);
+
if (!idr_pre_get(&mmc_host_idr, GFP_KERNEL))
return -ENOMEM;
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);
if (err)
return err;
* @host: mmc host
*
* Unregister and remove all cards associated with this host,
- * and power down the MMC bus.
+ * and power down the MMC bus. No new requests will be issued
+ * after this function has returned.
*/
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);