[PATCH] scsi: prevent ISA driver from building on PPC32

[Randy Dunlap]

From: Randy Dunlap <rdunlap at infradead.org>

Prevent drivers from building on PPC32 if they use isa_bus_to_virt(),
isa_virt_to_bus(), or isa_page_to_bus(), which are not available and
thus cause build errors.

../drivers/scsi/aha1542.c: In function 'aha1542_queuecommand':
../drivers/scsi/aha1542.c:461:30: error: implicit declaration of function 'isa_page_to_bus'; did you mean 'page_to_bus'? [-Werror=implicit-function-declaration]

Signed-off-by: Randy Dunlap <rdunlap at infradead.org>
Suggested-by: Michael Ellerman <mpe at ellerman.id.au>
---
 drivers/scsi/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- linux-next-20180720.orig/drivers/scsi/Kconfig
+++ linux-next-20180720/drivers/scsi/Kconfig
@@ -428,7 +428,7 @@ config SCSI_AHA152X
 
 config SCSI_AHA1542
 	tristate "Adaptec AHA1542 support"
-	depends on ISA && SCSI && ISA_DMA_API
+	depends on ISA && SCSI && ISA_DMA_API && !PPC32
 	---help---
 	  This is support for a SCSI host adapter.  It is explained in section
 	  3.4 of the SCSI-HOWTO, available from