[PATCH] tg3: make depend on ZONE_DMA

[Rui Salvaterra]

Since 614f4d166eee, on systems with ZONE_DMA unavailable, the Tigon3 driver
fails to initialize, at least on systems with BCM57766 controllers. On a late
2012 Mac Mini:

[    1.226623] tg3 0000:01:00.0: Unable to obtain 64 bit DMA for consistent allocations
[    1.226718] tg3 0000:01:00.0: probe with driver tg3 failed with error -5

Fixes: 614f4d166eee "tg3: Set coherent DMA mask bits to 31 for BCM57766 chipsets"

Cc: stable@xxxxxxxxxxxxxxx

Signed-off-by: Rui Salvaterra <rsalvaterra@xxxxxxxxx>
---
 drivers/net/ethernet/broadcom/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/ethernet/broadcom/Kconfig b/drivers/net/ethernet/broadcom/Kconfig
index f0bac0dd1439..c9875daa043b 100644
--- a/drivers/net/ethernet/broadcom/Kconfig
+++ b/drivers/net/ethernet/broadcom/Kconfig
@@ -124,6 +124,7 @@ config TIGON3
 	tristate "Broadcom Tigon3 support"
 	depends on PCI
 	depends on PTP_1588_CLOCK_OPTIONAL
+	depends on ZONE_DMA
 	select CRC32
 	select PHYLIB
 	help
-- 
2.55.0