From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Cc: "Edmund Henniges" <eh@emlix.com>, "Daniel Glöckner" <dg@emlix.com>
Subject: [PATCH 4/8] usb: Add a slice to usb host controllers
Date: Fri, 6 Mar 2020 20:34:02 +0100 [thread overview]
Message-ID: <20200306193406.20531-5-s.hauer@pengutronix.de> (raw)
In-Reply-To: <20200306193406.20531-1-s.hauer@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
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 1c3dcb79a8..da7afb5a32 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -83,11 +83,16 @@ 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--;
}
@@ -97,6 +102,7 @@ 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, host->hw_dev);
return 0;
}
diff --git a/include/usb/usb.h b/include/usb/usb.h
index 95dedfd5b7..d730578fd7 100644
--- a/include/usb/usb.h
+++ b/include/usb/usb.h
@@ -23,6 +23,7 @@
#define _USB_H_
#include <driver.h>
+#include <slice.h>
#include <usb/ch9.h>
#include <usb/ch11.h>
#include <usb/usb_defs.h>
@@ -154,11 +155,17 @@ 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);
--
2.25.1
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next prev parent reply other threads:[~2020-03-06 19:34 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-06 19:33 Protect code from pollers Sascha Hauer
2020-03-06 19:33 ` [PATCH 1/8] Introduce slices Sascha Hauer
2020-03-09 14:49 ` Daniel Glöckner
2020-03-10 10:10 ` Sascha Hauer
2020-03-06 19:34 ` [PATCH 2/8] net: Add a slice to struct eth_device Sascha Hauer
2020-03-06 19:34 ` [PATCH 3/8] net: mdiobus: Add slice Sascha Hauer
2020-03-06 19:34 ` Sascha Hauer [this message]
2020-03-06 19:34 ` [PATCH 5/8] usbnet: " Sascha Hauer
2020-03-06 19:34 ` [PATCH 6/8] net: Call net_poll() in a poller Sascha Hauer
2020-03-06 19:34 ` [PATCH 7/8] net: reply to ping requests Sascha Hauer
2020-03-06 19:34 ` [PATCH 8/8] usbnet: Be more friendly in the receive path Sascha Hauer
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