Signed-off-by: Sascha Hauer <[email protected]>
---
drivers/usb/core/usb.c | 6 ++++++
include/usb/usb.h | 7 +++++++
2 files changed, 13 insertions(+)
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 30c251f405..f25e350f15 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -78,11 +78,16 @@ static inline int usb_host_acquire(struct usb_host *host)
if (host->sem)
return -EAGAIN;
host->sem++;
+
+ slice_acquire(&host->slice);
+
return 0;
}
static inline void usb_host_release(struct usb_host *host)
{
+ slice_release(&host->slice);
+
if (host->sem > 0)
host->sem--;
}
@@ -92,6 +97,7 @@ int usb_register_host(struct usb_host *host)
list_add_tail(&host->list, &host_list);
host->busnum = host_busnum++;
host->sem = 0;
+ slice_init(&host->slice, dev_name(host->hw_dev));
return 0;
}
diff --git a/include/usb/usb.h b/include/usb/usb.h
index c2085eae87..1b51a00ddc 100644
--- a/include/usb/usb.h
+++ b/include/usb/usb.h
@@ -20,6 +20,7 @@
#define _USB_H_
#include <driver.h>
+#include <slice.h>
#include <usb/ch9.h>
#include <usb/ch11.h>
#include <usb/usb_defs.h>
@@ -165,11 +166,17 @@ struct usb_host {
struct usb_device *root_dev;
int sem;
struct usb_phy *usbphy;
+ struct slice slice;
};
int usb_register_host(struct usb_host *);
void usb_unregister_host(struct usb_host *host);
+static inline struct slice *usb_device_slice(struct usb_device *udev)
+{
+ return &udev->host->slice;
+}
+
int usb_host_detect(struct usb_host *host);
int usb_set_protocol(struct usb_device *dev, int ifnum, int protocol);
--
2.26.2
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