diff options
| author | Alan Stern <stern@rowland.harvard.edu> | 2013-01-22 11:37:35 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-01-22 08:55:13 -0800 |
| commit | 0f815a0a700bc10547449bde6c106051a035a1b9 (patch) | |
| tree | 15fa8225bc26d460df7e97ee056e95a51067a84b /lib/is_single_threaded.c | |
| parent | ad2e6329666650d9cafcae9ef53fbe09ea759ae2 (diff) | |
USB: UHCI: fix IRQ race during initialization
This patch (as1644) fixes a race that occurs during startup in
uhci-hcd. If the IRQ line is shared with other devices, it's possible
for the handler routine to be called before the data structures are
fully initialized.
The problem is fixed by adding a check to the IRQ handler routine. If
the initialization hasn't finished yet, the routine will return
immediately.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Don Zickus <dzickus@redhat.com>
Tested-by: "Huang, Adrian (ISS Linux TW)" <adrian.huang@hp.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/is_single_threaded.c')
0 files changed, 0 insertions, 0 deletions