[PATCH v3 05/14] usb: Add a slice to usb host controllers

["Daniel Glöckner" <dg@emlix.com>]

From: Sascha Hauer <s.hauer@pengutronix.de>

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/usb/core/usb.c | 7 +++++++
 include/usb/usb.h      | 7 +++++++
 2 files changed, 14 insertions(+)

diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 30c251f40..847529526 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--;
 }
@@ -92,11 +97,13 @@ 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;
 }
 
 void usb_unregister_host(struct usb_host *host)
 {
+	slice_exit(&host->slice);
 	list_del(&host->list);
 }
 
diff --git a/include/usb/usb.h b/include/usb/usb.h
index c2085eae8..1b51a00dd 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);
-- 
2.17.1


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