From: Randy Dunlap <[email protected]>

Fix build when CONFIG_ISA_DMA_API is not enabled. Fixes these
build errors (on x86_64):

../drivers/scsi/ultrastor.c: In function 'ultrastor_14f_detect':
../drivers/scsi/ultrastor.c:519:5: error: implicit declaration of function 
'request_dma' [-Werror=implicit-function-declaration]
     if (config.dma_channel && request_dma(config.dma_channel,"Ultrastor")) {
     ^
../drivers/scsi/ultrastor.c: In function 'ultrastor_release':
../drivers/scsi/ultrastor.c:658:3: error: implicit declaration of function 
'free_dma' [-Werror=implicit-function-declaration]
   free_dma(shost->dma_channel);
   ^

Signed-off-by: Randy Dunlap <[email protected]>
---
 drivers/scsi/Kconfig |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Found in linux-next but also applies to mainline.

--- linux-next-20160519.orig/drivers/scsi/Kconfig
+++ linux-next-20160519/drivers/scsi/Kconfig
@@ -1433,7 +1433,7 @@ config SCSI_U14_34F_MAX_TAGS
 
 config SCSI_ULTRASTOR
        tristate "UltraStor SCSI support"
-       depends on X86 && ISA && SCSI
+       depends on X86 && ISA && SCSI && ISA_DMA_API
        ---help---
          This is support for the UltraStor 14F, 24F and 34F SCSI-2 host
          adapter family.  This driver is explained in section 3.12 of the

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