diff options
Diffstat (limited to 'drivers/macintosh/via-cuda.c')
| -rw-r--r-- | drivers/macintosh/via-cuda.c | 16 |
1 files changed, 5 insertions, 11 deletions
diff --git a/drivers/macintosh/via-cuda.c b/drivers/macintosh/via-cuda.c index 32126958ac66..e3763cb4184b 100644 --- a/drivers/macintosh/via-cuda.c +++ b/drivers/macintosh/via-cuda.c @@ -459,14 +459,7 @@ cuda_start(void) void cuda_poll(void) { - /* cuda_interrupt only takes a normal lock, we disable - * interrupts here to avoid re-entering and thus deadlocking. - */ - if (cuda_irq) - disable_irq(cuda_irq); - cuda_interrupt(0, NULL); - if (cuda_irq) - enable_irq(cuda_irq); + cuda_interrupt(0, NULL); } EXPORT_SYMBOL(cuda_poll); @@ -475,13 +468,14 @@ EXPORT_SYMBOL(cuda_poll); static irqreturn_t cuda_interrupt(int irq, void *arg) { + unsigned long flags; u8 status; struct adb_request *req = NULL; unsigned char ibuf[16]; int ibuf_len = 0; int complete = 0; - spin_lock(&cuda_lock); + spin_lock_irqsave(&cuda_lock, flags); /* On powermacs, this handler is registered for the VIA IRQ. But they use * just the shift register IRQ -- other VIA interrupt sources are disabled. @@ -494,7 +488,7 @@ cuda_interrupt(int irq, void *arg) #endif { if ((in_8(&via[IFR]) & SR_INT) == 0) { - spin_unlock(&cuda_lock); + spin_unlock_irqrestore(&cuda_lock, flags); return IRQ_NONE; } else { out_8(&via[IFR], SR_INT); @@ -616,7 +610,7 @@ cuda_interrupt(int irq, void *arg) default: pr_err("cuda_interrupt: unknown cuda_state %d?\n", cuda_state); } - spin_unlock(&cuda_lock); + spin_unlock_irqrestore(&cuda_lock, flags); if (complete && req) { void (*done)(struct adb_request *) = req->done; mb(); |