Complete() will be run with interrupt enabled, so prepare for
the comming change.
Signed-off-by: Ming Lei <ming....@canonical.com>
---
drivers/usb/misc/uss720.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/misc/uss720.c b/drivers/usb/misc/uss720.c
index 40ef40a..b2e76fa 100644
--- a/drivers/usb/misc/uss720.c
+++ b/drivers/usb/misc/uss720.c
@@ -132,8 +132,13 @@ static void async_complete(struct urb *urb)
(unsigned int)priv->reg[6]);
#endif
/* if nAck interrupts are enabled and we have an interrupt,
call the interrupt procedure */
- if (rq->reg[2] & rq->reg[1] & 0x10 && pp)
+ if (rq->reg[2] & rq->reg[1] & 0x10 && pp) {
+ unsigned long flags;
+
+ local_irq_save(flags);
parport_generic_irq(pp);
+ local_irq_restore(flags);
+ }
}
complete(&rq->compl);
kref_put(&rq->ref_count, destroy_async);
--
1.7.9.5
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