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sparc: Fix parport build warnings.

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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@davemloft.net>
This commit is contained in:
David S. Miller 2018-10-19 10:52:52 -07:00
parent 91b15613ce
commit 46b8306480
1 changed files with 2 additions and 0 deletions
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2
arch/sparc/include/asm/parport.h
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@ -21,6 +21,7 @@
*/
#define HAS_DMA
#ifdef CONFIG_PARPORT_PC_FIFO
static DEFINE_SPINLOCK(dma_spin_lock);
#define claim_dma_lock() \
@ -31,6 +32,7 @@ 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;