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authorVipin Kumar <vipin.kumar@st.com>2012-12-13 16:25:53 +0530
committerMarek Vasut <marex@denx.de>2012-12-17 15:38:15 +0100
commitb6d7852cf8b7ced786937d3d080956b0c7be9836 (patch)
tree84e918a927e721116cdfe11797934d11d045a4a1 /fs/cramfs
parentc5a927c61fde9c053be9d9915138537affb13596 (diff)
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usbh/ehci: Increase timeout for enumeration
The current logic reads the port status just once after usb_hub_power_on and expects the portstatus and portchange to report the connection status immediately and correctly. Few pen drives are not able to report both of them immediately ie. those pens report the connection change but not the connected state after the first read. This opportunity once lost is gone for ever because the u-boot, unlike linux or any other OS, works in polling mode. This patch modifies the logic to read the port status continuously until the portstatus and portchange both report a connection change as well as a connected state or no connection change and no connection. This logic is placed in a timeout of 10 sec. At the end of it, the pen drive would have either reported a ONE or a ZERO in bit 1 of portstatus as well as portchange. It enhances the set of pen drives which can eventually be detected by u-boot Note: This 10 second timeout is based purely on several experiments done with the broken pen drives Signed-off-by: Vipin Kumar <vipin.kumar@st.com> Acked-by: Igor Grinberg <grinberg@compulab.co.il>
Diffstat (limited to 'fs/cramfs')
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