-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
[PATCH] USB UHCI: improved reset handling
This patch improves the strategy uhci-hcd uses for performing controller resets and checking whether they are needed. The HCRESET command doesn't affect the Suspend, Resume, or Reset bits in the port status & control registers, so the driver must clear them by itself. This means the code to figure out how many ports there are has to be moved to an earlier spot in the driver. The R/WC bits in the USBLEGSUP register can be set by the hardware even in the absence of BIOS meddling with legacy support features. Hence it's not a good idea to check them while trying to determine whether the BIOS has altered the controller's state. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
- Loading branch information
Alan Stern
authored and
Greg Kroah-Hartman
committed
Jun 27, 2005
1 parent
6c1b445
commit c074b41
Showing
1 changed file
with
40 additions
and
29 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters