diff options
| author | Johan Hovold <johan@kernel.org> | 2020-10-25 18:45:48 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-12-29 13:42:43 +0100 |
| commit | 6874c0d538d91217b77f84992141ee90ffbbe88b (patch) | |
| tree | 710b84578ce080ce6f04050287c3bf85ab572b13 /tools/perf/scripts/python | |
| parent | 195672c92c5b4603a0e30302d26909ef636945d8 (diff) | |
USB: serial: keyspan_pda: fix write deadlock
commit 7353cad7ee4deaefc16e94727e69285563e219f6 upstream.
The write() callback can be called in interrupt context (e.g. when used
as a console) so interrupts must be disabled while holding the port lock
to prevent a possible deadlock.
Fixes: e81ee637e4ae ("usb-serial: possible irq lock inversion (PPP vs. usb/serial)")
Fixes: 507ca9bc0476 ("[PATCH] USB: add ability for usb-serial drivers to determine if their write urb is currently being used.")
Cc: stable <stable@vger.kernel.org> # 2.6.19
Acked-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Johan Hovold <johan@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python')
0 files changed, 0 insertions, 0 deletions