scsi: aic7xxx: fix EISA support

Instead of relying on the now removed NULL argument to
pci_alloc_consistent, switch to the generic DMA API, and store the struct
device so that we can pass it.

Fixes: 4167b2ad5182 ("PCI: Remove NULL device handling from PCI DMA API")
Reported-by: Matthew Whitehead <tedheadster@gmail.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Matthew Whitehead <tedheadster@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

4 files changed, 7 insertions, 6 deletions

diff --git a/drivers/scsi/aic7xxx/aic7770_osm.c b/drivers/scsi/aic7xxx/aic7770_osm.c
index 3d401d02c019..bdd177e3d762 100644
--- a/drivers/scsi/aic7xxx/aic7770_osm.c
+++ b/drivers/scsi/aic7xxx/aic7770_osm.c
@@ -91,6 +91,7 @@ aic7770_probe(struct device *dev)
         ahc = ahc_alloc(&aic7xxx_driver_template, name);
         if (ahc == NULL)
                 return (ENOMEM);
+        ahc->dev = dev;
         error = aic7770_config(ahc, aic7770_ident_table + edev->id.driver_data,
                                eisaBase);
         if (error != 0) {
diff --git a/drivers/scsi/aic7xxx/aic7xxx.h b/drivers/scsi/aic7xxx/aic7xxx.h
index 5614921b4041..88b90f9806c9 100644
--- a/drivers/scsi/aic7xxx/aic7xxx.h
+++ b/drivers/scsi/aic7xxx/aic7xxx.h
@@ -943,6 +943,7 @@ struct ahc_softc {
          * Platform specific device information.
          */
         ahc_dev_softc_t           dev_softc;
+        struct device             *dev;
 
         /*
          * Bus specific device information.
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index 3c9c17450bb3..d5c4a0d23706 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -860,8 +860,8 @@ int
 ahc_dmamem_alloc(struct ahc_softc *ahc, bus_dma_tag_t dmat, void** vaddr,
                  int flags, bus_dmamap_t *mapp)
 {
-        *vaddr = pci_alloc_consistent(ahc->dev_softc,
-                                      dmat->maxsize, mapp);
+        /* XXX: check if we really need the GFP_ATOMIC and unwind this mess! */
+        *vaddr = dma_alloc_coherent(ahc->dev, dmat->maxsize, mapp, GFP_ATOMIC);
         if (*vaddr == NULL)
                 return ENOMEM;
         return 0;
@@ -871,8 +871,7 @@ void
 ahc_dmamem_free(struct ahc_softc *ahc, bus_dma_tag_t dmat,
                 void* vaddr, bus_dmamap_t map)
 {
-        pci_free_consistent(ahc->dev_softc, dmat->maxsize,
-                            vaddr, map);
+        dma_free_coherent(ahc->dev, dmat->maxsize, vaddr, map);
 }
 
 int
@@ -1123,8 +1122,7 @@ ahc_linux_register_host(struct ahc_softc *ahc, struct scsi_host_template *templa
 
         host->transportt = ahc_linux_transport_template;
 
-        retval = scsi_add_host(host,
-                        (ahc->dev_softc ? &ahc->dev_softc->dev : NULL));
+        retval = scsi_add_host(host, ahc->dev);
         if (retval) {
                 printk(KERN_WARNING "aic7xxx: scsi_add_host failed\n");
                 scsi_host_put(host);
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
index 0fc14dac7070..717d8d1082ce 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm_pci.c
@@ -250,6 +250,7 @@ ahc_linux_pci_dev_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
                 }
         }
         ahc->dev_softc = pci;
+        ahc->dev = &pci->dev;
         error = ahc_pci_config(ahc, entry);
         if (error != 0) {
                 ahc_free(ahc);