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

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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: Sumant Patro <sumant.patro@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Sumant Patro 2007-02-14 12:55:45 -08:00 committed by James Bottomley
parent cf62a0a543
commit 9f35fa8a14
1 changed files with 6 additions and 6 deletions
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12
drivers/scsi/megaraid/megaraid_sas.c
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@ -2711,9 +2711,9 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
* For each user buffer, create a mirror buffer and copy in * For each user buffer, create a mirror buffer and copy in
*/ */
for (i = 0; i < ioc->sge_count; i++) { 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, ioc->sgl[i].iov_len,
&buf_handle); &buf_handle, GFP_KERNEL);
if (!kbuff_arr[i]) { if (!kbuff_arr[i]) {
printk(KERN_DEBUG "megasas: Failed to alloc " printk(KERN_DEBUG "megasas: Failed to alloc "
"kernel SGL buffer for IOCTL \n"); "kernel SGL buffer for IOCTL \n");
@ -2740,8 +2740,8 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
} }
if (ioc->sense_len) { if (ioc->sense_len) {
sense = pci_alloc_consistent(instance->pdev, ioc->sense_len, sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
&sense_handle); &sense_handle, GFP_KERNEL);
if (!sense) { if (!sense) {
error = -ENOMEM; error = -ENOMEM;
goto out; goto out;
@ -2800,12 +2800,12 @@ megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
out: out:
if (sense) { if (sense) {
pci_free_consistent(instance->pdev, ioc->sense_len, dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
sense, sense_handle); sense, sense_handle);
} }
for (i = 0; i < ioc->sge_count && kbuff_arr[i]; i++) { 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, kern_sge32[i].length,
kbuff_arr[i], kern_sge32[i].phys_addr); kbuff_arr[i], kern_sge32[i].phys_addr);
} }