There were pci_alloc_consistent() failures on ARM64 platform.
Use dma_alloc_coherent() with GFP_KERNEL flag DMA memory allocations.

Signed-off-by: Mahesh Rajashekhara <mahesh.rajashekh...@microsemi.com>
---
 drivers/scsi/aacraid/aachba.c   | 13 +++++++++----
 drivers/scsi/aacraid/aacraid.h  | 22 ++++++++++++++++++++++
 drivers/scsi/aacraid/commctrl.c |  7 +++++--
 drivers/scsi/aacraid/comminit.c |  4 ++--
 drivers/scsi/aacraid/commsup.c  | 16 ++++++++++------
 drivers/scsi/aacraid/linit.c    |  8 +++++---
 drivers/scsi/aacraid/rx.c       | 11 ++++++-----
 7 files changed, 59 insertions(+), 22 deletions(-)

diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index e3e93de..d07da1a 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -1678,11 +1678,12 @@ int aac_issue_bmic_identify(struct aac_dev *dev, u32 
bus, u32 target)
                        sizeof(struct sgentry) + sizeof(struct sgentry64);
        datasize = sizeof(struct aac_ciss_identify_pd);
 
-       identify_resp =  pci_alloc_consistent(dev->pdev, datasize, &addr);
+       identify_resp =  aac_pci_alloc_consistent(dev->pdev, datasize, &addr);
 
        if (!identify_resp)
                goto fib_free_ptr;
 
+       memset(identify_resp, 0, datasize);
        vbus = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_bus);
        vid = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_target);
 
@@ -1720,7 +1721,10 @@ int aac_issue_bmic_identify(struct aac_dev *dev, u32 
bus, u32 target)
                dev->hba_map[bus][target].qd_limit =
                        identify_resp->current_queue_depth_limit;
 
-       pci_free_consistent(dev->pdev, datasize, (void *)identify_resp, addr);
+       aac_pci_free_consistent(dev->pdev,
+                               datasize,
+                               (void *)identify_resp,
+                               addr);
 
        aac_fib_complete(fibptr);
 
@@ -1814,7 +1818,7 @@ int aac_report_phys_luns(struct aac_dev *dev, struct fib 
*fibptr, int rescan)
        datasize = sizeof(struct aac_ciss_phys_luns_resp)
                        + (AAC_MAX_TARGETS - 1) * sizeof(struct _ciss_lun);
 
-       phys_luns = (struct aac_ciss_phys_luns_resp *) pci_alloc_consistent(
+       phys_luns = (struct aac_ciss_phys_luns_resp *) aac_pci_alloc_consistent(
                        dev->pdev, datasize, &addr);
 
        if (phys_luns == NULL) {
@@ -1822,6 +1826,7 @@ int aac_report_phys_luns(struct aac_dev *dev, struct fib 
*fibptr, int rescan)
                goto err_out;
        }
 
+       memset(phys_luns, 0, datasize);
        vbus = (u32) le16_to_cpu(
                        dev->supplement_adapter_info.virt_device_bus);
        vid = (u32) le16_to_cpu(
@@ -1861,7 +1866,7 @@ int aac_report_phys_luns(struct aac_dev *dev, struct fib 
*fibptr, int rescan)
                aac_update_hba_map(dev, phys_luns, rescan);
        }
 
-       pci_free_consistent(dev->pdev, datasize, (void *) phys_luns, addr);
+       aac_pci_free_consistent(dev->pdev, datasize, (void *) phys_luns, addr);
 err_out:
        return rcode;
 }
diff --git a/drivers/scsi/aacraid/aacraid.h b/drivers/scsi/aacraid/aacraid.h
index d036a80..12121d6 100644
--- a/drivers/scsi/aacraid/aacraid.h
+++ b/drivers/scsi/aacraid/aacraid.h
@@ -2692,4 +2692,26 @@ extern int update_interval;
 extern int check_interval;
 extern int aac_check_reset;
 extern int aac_fib_dump;
+#if defined(CONFIG_ARM64)
+static inline void *
+aac_pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
+                    dma_addr_t *dma_handle) {
+       return dma_alloc_coherent(hwdev == NULL ? NULL : &hwdev->dev,
+                                 size,
+                                 dma_handle,
+                                 GFP_KERNEL);
+}
+#else
+static inline void *
+aac_pci_alloc_consistent(struct pci_dev *hwdev, size_t size,
+                    dma_addr_t *dma_handle) {
+       return pci_alloc_consistent(hwdev, size, dma_handle);
+}
+#endif
+static inline void
+aac_pci_free_consistent(struct pci_dev *hwdev, size_t size,
+                       void *vaddr, dma_addr_t dma_handle)
+{
+       pci_free_consistent(hwdev, size, vaddr, dma_handle);
+}
 #endif
diff --git a/drivers/scsi/aacraid/commctrl.c b/drivers/scsi/aacraid/commctrl.c
index f6afd50..7d1757a 100644
--- a/drivers/scsi/aacraid/commctrl.c
+++ b/drivers/scsi/aacraid/commctrl.c
@@ -100,12 +100,13 @@ static int ioctl_send_fib(struct aac_dev * dev, void 
__user *arg)
                        goto cleanup;
                }
 
-               kfib = pci_alloc_consistent(dev->pdev, size, &daddr);
+               kfib = aac_pci_alloc_consistent(dev->pdev, size, &daddr);
                if (!kfib) {
                        retval = -ENOMEM;
                        goto cleanup;
                }
 
+               memset(kfib, 0, size);
                /* Highjack the hw_fib */
                hw_fib = fibptr->hw_fib_va;
                hw_fib_pa = fibptr->hw_fib_pa;
@@ -160,7 +161,9 @@ static int ioctl_send_fib(struct aac_dev * dev, void __user 
*arg)
                retval = -EFAULT;
 cleanup:
        if (hw_fib) {
-               pci_free_consistent(dev->pdev, size, kfib, fibptr->hw_fib_pa);
+               aac_pci_free_consistent(dev->pdev,
+                                       size, kfib,
+                                       fibptr->hw_fib_pa);
                fibptr->hw_fib_pa = hw_fib_pa;
                fibptr->hw_fib_va = hw_fib;
        }
diff --git a/drivers/scsi/aacraid/comminit.c b/drivers/scsi/aacraid/comminit.c
index 3560700..c06977c 100644
--- a/drivers/scsi/aacraid/comminit.c
+++ b/drivers/scsi/aacraid/comminit.c
@@ -99,13 +99,13 @@ static int aac_alloc_comm(struct aac_dev *dev, void 
**commaddr, unsigned long co
        size = fibsize + aac_init_size + commsize + commalign +
                        printfbufsiz + host_rrq_size;
 
-       base = pci_alloc_consistent(dev->pdev, size, &phys);
+       base = aac_pci_alloc_consistent(dev->pdev, size, &phys);
 
        if (base == NULL) {
                printk(KERN_ERR "aacraid: unable to create mapping.\n");
                return 0;
        }
-
+       memset(base, 0, size);
        dev->comm_addr = (void *)base;
        dev->comm_phys = phys;
        dev->comm_size = size;
diff --git a/drivers/scsi/aacraid/commsup.c b/drivers/scsi/aacraid/commsup.c
index a3ad042..c34aa5f 100644
--- a/drivers/scsi/aacraid/commsup.c
+++ b/drivers/scsi/aacraid/commsup.c
@@ -73,10 +73,10 @@ static int fib_map_alloc(struct aac_dev *dev)
        }
 
        dprintk((KERN_INFO
-         "allocate hardware fibs pci_alloc_consistent(%p, %d * (%d + %d), 
%p)\n",
+         "allocate hardware fibs aac_pci_alloc_consistent(%p, %d * (%d + %d), 
%p)\n",
          dev->pdev, dev->max_cmd_size, dev->scsi_host_ptr->can_queue,
          AAC_NUM_MGT_FIB, &dev->hw_fib_pa));
-       dev->hw_fib_va = pci_alloc_consistent(dev->pdev,
+       dev->hw_fib_va = aac_pci_alloc_consistent(dev->pdev,
                (dev->max_cmd_size + sizeof(struct aac_fib_xporthdr))
                * (dev->scsi_host_ptr->can_queue + AAC_NUM_MGT_FIB) + (ALIGN32 
- 1),
                &dev->hw_fib_pa);
@@ -106,7 +106,7 @@ void aac_fib_map_free(struct aac_dev *dev)
        fib_size = dev->max_fib_size + sizeof(struct aac_fib_xporthdr);
        alloc_size = fib_size * num_fibs + ALIGN32 - 1;
 
-       pci_free_consistent(dev->pdev, alloc_size, dev->hw_fib_va,
+       aac_pci_free_consistent(dev->pdev, alloc_size, dev->hw_fib_va,
                                                        dev->hw_fib_pa);
 
        dev->hw_fib_va = NULL;
@@ -1571,7 +1571,10 @@ static int _aac_reset_adapter(struct aac_dev *aac, int 
forced, u8 reset_type)
         * case.
         */
        aac_fib_map_free(aac);
-       pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr, 
aac->comm_phys);
+       aac_pci_free_consistent(aac->pdev,
+                               aac->comm_size,
+                               aac->comm_addr,
+                               aac->comm_phys);
        aac->comm_addr = NULL;
        aac->comm_phys = 0;
        kfree(aac->queues);
@@ -2320,10 +2323,11 @@ static int aac_send_wellness_command(struct aac_dev 
*dev, char *wellness_str,
        if (!fibptr)
                goto out;
 
-       dma_buf = pci_alloc_consistent(dev->pdev, datasize, &addr);
+       dma_buf = aac_pci_alloc_consistent(dev->pdev, datasize, &addr);
        if (!dma_buf)
                goto fib_free_out;
 
+       memset(dma_buf, 0, datasize);
        aac_fib_init(fibptr);
 
        vbus = (u32)le16_to_cpu(dev->supplement_adapter_info.virt_device_bus);
@@ -2355,7 +2359,7 @@ static int aac_send_wellness_command(struct aac_dev *dev, 
char *wellness_str,
        ret = aac_fib_send(ScsiPortCommand64, fibptr, sizeof(struct aac_srb),
                                FsaNormal, 1, 1, NULL, NULL);
 
-       pci_free_consistent(dev->pdev, datasize, (void *)dma_buf, addr);
+       aac_pci_free_consistent(dev->pdev, datasize, (void *)dma_buf, addr);
 
        /*
         * Do not set XferState to zero unless
diff --git a/drivers/scsi/aacraid/linit.c b/drivers/scsi/aacraid/linit.c
index 520ada8..cd721e9 100644
--- a/drivers/scsi/aacraid/linit.c
+++ b/drivers/scsi/aacraid/linit.c
@@ -1592,8 +1592,10 @@ static int aac_probe_one(struct pci_dev *pdev, const 
struct pci_device_id *id)
  out_unmap:
        aac_fib_map_free(aac);
        if (aac->comm_addr)
-               pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr,
-                 aac->comm_phys);
+               aac_pci_free_consistent(aac->pdev,
+                                       aac->comm_size,
+                                       aac->comm_addr,
+                                       aac->comm_phys);
        kfree(aac->queues);
        aac_adapter_ioremap(aac, 0);
        kfree(aac->fibs);
@@ -1729,7 +1731,7 @@ static void aac_remove_one(struct pci_dev *pdev)
 
        __aac_shutdown(aac);
        aac_fib_map_free(aac);
-       pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr,
+       aac_pci_free_consistent(aac->pdev, aac->comm_size, aac->comm_addr,
                        aac->comm_phys);
        kfree(aac->queues);
 
diff --git a/drivers/scsi/aacraid/rx.c b/drivers/scsi/aacraid/rx.c
index 5d19c31..6c1f633 100644
--- a/drivers/scsi/aacraid/rx.c
+++ b/drivers/scsi/aacraid/rx.c
@@ -355,29 +355,30 @@ static int aac_rx_check_health(struct aac_dev *dev)
 
                if (likely((status & 0xFF000000L) == 0xBC000000L))
                        return (status >> 16) & 0xFF;
-               buffer = pci_alloc_consistent(dev->pdev, 512, &baddr);
+               buffer = aac_pci_alloc_consistent(dev->pdev, 512, &baddr);
                ret = -2;
                if (unlikely(buffer == NULL))
                        return ret;
-               post = pci_alloc_consistent(dev->pdev,
+               post = aac_pci_alloc_consistent(dev->pdev,
                  sizeof(struct POSTSTATUS), &paddr);
                if (unlikely(post == NULL)) {
-                       pci_free_consistent(dev->pdev, 512, buffer, baddr);
+                       aac_pci_free_consistent(dev->pdev, 512, buffer, baddr);
                        return ret;
                }
                memset(buffer, 0, 512);
+               memset(post, 0, sizeof(struct POSTSTATUS));
                post->Post_Command = cpu_to_le32(COMMAND_POST_RESULTS);
                post->Post_Address = cpu_to_le32(baddr);
                rx_writel(dev, MUnit.IMRx[0], paddr);
                rx_sync_cmd(dev, COMMAND_POST_RESULTS, baddr, 0, 0, 0, 0, 0,
                  NULL, NULL, NULL, NULL, NULL);
-               pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
+               aac_pci_free_consistent(dev->pdev, sizeof(struct POSTSTATUS),
                  post, paddr);
                if (likely((buffer[0] == '0') && ((buffer[1] == 'x') || 
(buffer[1] == 'X')))) {
                        ret = (hex_to_bin(buffer[2]) << 4) +
                                hex_to_bin(buffer[3]);
                }
-               pci_free_consistent(dev->pdev, 512, buffer, baddr);
+               aac_pci_free_consistent(dev->pdev, 512, buffer, baddr);
                return ret;
        }
        /*
-- 
2.7.4

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