mmc: core: convert slot functions to managed allocation
This prepares for the addition of further slot functions.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index c1a03ee..65c64ee 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -11,6 +11,7 @@
#define LINUX_MMC_HOST_H
#include <linux/leds.h>
+#include <linux/mutex.h>
#include <linux/sched.h>
#include <linux/device.h>
#include <linux/fault-inject.h>
@@ -154,6 +155,7 @@
* struct mmc_slot - MMC slot functions
*
* @cd_irq: MMC/SD-card slot hotplug detection IRQ or -EINVAL
+ * @lock: protect the @handler_priv pointer
* @handler_priv: MMC/SD-card slot context
*
* Some MMC/SD host controllers implement slot-functions like card and
@@ -163,6 +165,7 @@
*/
struct mmc_slot {
int cd_irq;
+ struct mutex lock;
void *handler_priv;
};