From: Sascha Hauer <s.hauer@pengutronix.de>
To: barebox@lists.infradead.org
Subject: [PATCH 09/12] USB: host: hub: only configure hub once
Date: Sat, 19 Jul 2014 11:16:04 +0200 [thread overview]
Message-ID: <1405761367-23724-10-git-send-email-s.hauer@pengutronix.de> (raw)
In-Reply-To: <1405761367-23724-1-git-send-email-s.hauer@pengutronix.de>
We had a single function which configures the hub and scans
the ports. Split this up and configure the hub only once and
scan the ports during detect() time. This allows to plug in
additional devices into a hub while continuing to use the
already existing devices.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
drivers/usb/core/hub.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c
index 689a79c..39cadb5 100644
--- a/drivers/usb/core/hub.c
+++ b/drivers/usb/core/hub.c
@@ -405,6 +405,13 @@ static int usb_hub_configure(struct usb_device *dev)
"" : "no ");
usb_hub_power_on(hub);
+ return 0;
+}
+
+static int usb_hub_configure_ports(struct usb_device *dev)
+{
+ int i;
+
for (i = 0; i < dev->maxchild; i++)
usb_hub_configure_port(dev, i);
@@ -416,7 +423,7 @@ static int usb_hub_detect(struct device_d *dev)
struct usb_device *usbdev = container_of(dev, struct usb_device, dev);
int i;
- usb_hub_configure(usbdev);
+ usb_hub_configure_ports(usbdev);
for (i = 0; i < usbdev->maxchild; i++) {
if (usbdev->children[i])
--
2.0.1
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next prev parent reply other threads:[~2014-07-19 9:16 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-19 9:15 USB Host patches Sascha Hauer
2014-07-19 9:15 ` [PATCH 01/12] USB: i.MX chipidea: Implement OTG support for the poor Sascha Hauer
2014-07-19 9:15 ` [PATCH 02/12] commands: usb: add tree view capability Sascha Hauer
2014-07-19 9:15 ` [PATCH 03/12] USB: host: simplify usb_new_device Sascha Hauer
2014-07-19 9:15 ` [PATCH 04/12] USB: host: hub: Turn into a driver Sascha Hauer
2014-07-19 9:16 ` [PATCH 05/12] USB: host: fixup USB device hierarchy Sascha Hauer
2014-07-19 9:16 ` [PATCH 06/12] USB: host: hub: Use dev_dbg Sascha Hauer
2014-07-19 9:16 ` [PATCH 07/12] USB: host: hub: Use usb_hub_power_on from U-Boot Sascha Hauer
2014-07-19 9:16 ` [PATCH 08/12] USB: host: factor out port configuration to separate function Sascha Hauer
2014-07-19 9:16 ` Sascha Hauer [this message]
2014-07-19 9:16 ` [PATCH 10/12] USB: host: implement usb_remove_device Sascha Hauer
2014-07-19 9:16 ` [PATCH 11/12] USB: host: detect port change only once in usb_hub_configure_port Sascha Hauer
2014-07-19 9:16 ` [PATCH 12/12] USB: host: drop force rescan Sascha Hauer
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