diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2007-10-12 15:19:14 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-11-16 09:30:22 -0800 |
| commit | 34f84ffa2b3fa5af7e2cd27d0569ded38786396a (patch) | |
| tree | dd558a3475e3fca83096a2aac58bd279bf72b65e /net/lapb/lapb_timer.c | |
| parent | bdef0ae05e53c9681bdb3367ca1d461e8c2277f5 (diff) | |
USB: mutual exclusion for EHCI init and port resets
patch 32fe01985aa2cb2562f6fc171e526e279abe10db in mainline.
This patch (as999) fixes a problem that sometimes shows up when host
controller driver modules are loaded in the wrong order. If ehci-hcd
happens to initialize an EHCI controller while the companion OHCI or
UHCI controller is in the middle of a port reset, the reset can fail
and the companion may get very confused. The patch adds an
rw-semaphore and uses it to keep EHCI initialization and port resets
mutually exclusive.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: David Brownell <david-b@pacbell.net>
Cc: David Miller <davem@davemloft.net>
Cc: Dely L Sy <dely.l.sy@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'net/lapb/lapb_timer.c')
0 files changed, 0 insertions, 0 deletions