From: David S. Miller <davem@xxxxxxxxxxxxx>
[ Upstream commit 46b8306480fb424abd525acc1763da1c63a27d8a ]
If PARPORT_PC_FIFO is not enabled, do not provide the dma lock
macros and lock definition. Otherwise:
./arch/sparc/include/asm/parport.h:24:24: warning: ‘dma_spin_lock’ defined but not used [-Wunused-variable]
static DEFINE_SPINLOCK(dma_spin_lock);
^~~~~~~~~~~~~
./include/linux/spinlock_types.h:81:39: note: in definition of macro ‘DEFINE_SPINLOCK’
#define DEFINE_SPINLOCK(x) spinlock_t x = __SPIN_LOCK_UNLOCKED(x)
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/sparc/include/asm/parport.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/sparc/include/asm/parport.h b/arch/sparc/include/asm/parport.h
index f005ccac91cc9..e87c0f81b700e 100644
--- a/arch/sparc/include/asm/parport.h
+++ b/arch/sparc/include/asm/parport.h
@@ -20,6 +20,7 @@
*/
#define HAS_DMA
+#ifdef CONFIG_PARPORT_PC_FIFO
static DEFINE_SPINLOCK(dma_spin_lock);
#define claim_dma_lock() \
@@ -30,6 +31,7 @@ static DEFINE_SPINLOCK(dma_spin_lock);
#define release_dma_lock(__flags) \
spin_unlock_irqrestore(&dma_spin_lock, __flags);
+#endif
static struct sparc_ebus_info {
struct ebus_dma_info info;
--
2.20.1
