Commit 9f35fa8a authored by Sumant Patro's avatar Sumant Patro Committed by James Bottomley

[SCSI] megaraid_sas: replace pci_alloc_consitent with dma_alloc_coherent in ioctl path

Replaced pci_alloc_consistent with dma_alloc_coherent from the ioctl path.
This is to avoid situations where ioctl fails for lack of memory
(when system under heavy stress).
Signed-off-by: default avatarSumant Patro <sumant.patro@lsi.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent cf62a0a5
......@@ -2711,9 +2711,9 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
* For each user buffer, create a mirror buffer and copy in
*/
for (i = 0; i < ioc->sge_count; i++) {
kbuff_arr[i] = pci_alloc_consistent(instance->pdev,
kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
ioc->sgl[i].iov_len,
&buf_handle);
&buf_handle, GFP_KERNEL);
if (!kbuff_arr[i]) {
printk(KERN_DEBUG "megasas: Failed to alloc "
"kernel SGL buffer for IOCTL \n");
......@@ -2740,8 +2740,8 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
}
if (ioc->sense_len) {
sense = pci_alloc_consistent(instance->pdev, ioc->sense_len,
&sense_handle);
sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
&sense_handle, GFP_KERNEL);
if (!sense) {
error = -ENOMEM;
goto out;
......@@ -2800,12 +2800,12 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
out:
if (sense) {
pci_free_consistent(instance->pdev, ioc->sense_len,
dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
sense, sense_handle);
}
for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) {
pci_free_consistent(instance->pdev,
dma_free_coherent(&instance->pdev->dev,
kern_sge32[i].length,
kbuff_arr[i], kern_sge32[i].phys_addr);
}
......
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