[U-Boot] [PATCH v3 5/8] usb: hub: Fix enumration timeout

Vivek Gautam gautam.vivek at samsung.com
Fri Apr 12 13:04:37 CEST 2013


Patch b6d7852c increases timeout for enumeration, taking
worst case to be 10 sec.
get_timer() api returns timestamp in milliseconds, which is
what we are checking in the do-while() loop in usb_hub_configure()
(get_timer(start) < CONFIG_SYS_HZ * 10).
This should give us a required check for 10 seconds, and thereby
we don't need to add additional mdelay of 100 microseconds in
each cycle.

Signed-off-by: Vivek Gautam <gautam.vivek at samsung.com>
Reviewed-by: Vipin Kumar <vipin.kumar at st.com>
---

Changes from v2:
 - none

 common/usb_hub.c |    1 -
 1 files changed, 0 insertions(+), 1 deletions(-)

diff --git a/common/usb_hub.c b/common/usb_hub.c
index e4f4e3c..ab41943 100644
--- a/common/usb_hub.c
+++ b/common/usb_hub.c
@@ -443,7 +443,6 @@ static int usb_hub_configure(struct usb_device *dev)
 				(portstatus & USB_PORT_STAT_CONNECTION))
 				break;
 
-			mdelay(100);
 		} while (get_timer(start) < CONFIG_SYS_HZ * 10);
 
 		if (ret < 0)
-- 
1.7.6.5



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