Re: [RFC v2 11/20] scsi: megaraid: Replace PCI pool old API

From: Peter Senna Tschudin
Date: Sat Feb 18 2017 - 13:38:09 EST

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On Sat, Feb 18, 2017 at 09:35:47AM +0100, Romain Perier wrote:

Hi Romain,

Checkpatch gives some warnings you can fix related to NULL tests before
dma_pool_destroy(), and you changed indentation style in some of your
changes. Some times it is important to keep consistency within a file
even if the style is not the default. Please fix and resend.

> The PCI pool API is deprecated. This commits replaces the PCI pool old
> API by the appropriated function with the DMA pool API.
>
> Signed-off-by: Romain Perier <romain.perier@xxxxxxxxxxxxx>
> ---
> drivers/scsi/megaraid/megaraid_mbox.c | 30 ++++++++---------
> drivers/scsi/megaraid/megaraid_mm.c | 29 ++++++++--------
> drivers/scsi/megaraid/megaraid_sas_base.c | 25 +++++++-------
> drivers/scsi/megaraid/megaraid_sas_fusion.c | 51 +++++++++++++++--------------
> 4 files changed, 70 insertions(+), 65 deletions(-)
>
> diff --git a/drivers/scsi/megaraid/megaraid_mbox.c b/drivers/scsi/megaraid/megaraid_mbox.c
> index f0987f2..6d0bd3a 100644
> --- a/drivers/scsi/megaraid/megaraid_mbox.c
> +++ b/drivers/scsi/megaraid/megaraid_mbox.c
> @@ -1153,8 +1153,8 @@ megaraid_mbox_setup_dma_pools(adapter_t *adapter)
>
>
> // Allocate memory for 16-bytes aligned mailboxes
> - raid_dev->mbox_pool_handle = pci_pool_create("megaraid mbox pool",
> - adapter->pdev,
> + raid_dev->mbox_pool_handle = dma_pool_create("megaraid mbox pool",
> + &adapter->pdev->dev,
> sizeof(mbox64_t) + 16,
> 16, 0);
>
> @@ -1164,7 +1164,7 @@ megaraid_mbox_setup_dma_pools(adapter_t *adapter)
>
> mbox_pci_blk = raid_dev->mbox_pool;
> for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
> - mbox_pci_blk[i].vaddr = pci_pool_alloc(
> + mbox_pci_blk[i].vaddr = dma_pool_alloc(
> raid_dev->mbox_pool_handle,
> GFP_KERNEL,
> &mbox_pci_blk[i].dma_addr);
> @@ -1181,8 +1181,8 @@ megaraid_mbox_setup_dma_pools(adapter_t *adapter)
> * share common memory pool. Passthru structures piggyback on memory
> * allocted to extended passthru since passthru is smaller of the two
> */
> - raid_dev->epthru_pool_handle = pci_pool_create("megaraid mbox pthru",
> - adapter->pdev, sizeof(mraid_epassthru_t), 128, 0);
> + raid_dev->epthru_pool_handle = dma_pool_create("megaraid mbox pthru",
> + &adapter->pdev->dev, sizeof(mraid_epassthru_t), 128, 0);
>
> if (raid_dev->epthru_pool_handle == NULL) {
> goto fail_setup_dma_pool;
> @@ -1190,7 +1190,7 @@ megaraid_mbox_setup_dma_pools(adapter_t *adapter)
>
> epthru_pci_blk = raid_dev->epthru_pool;
> for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
> - epthru_pci_blk[i].vaddr = pci_pool_alloc(
> + epthru_pci_blk[i].vaddr = dma_pool_alloc(
> raid_dev->epthru_pool_handle,
> GFP_KERNEL,
> &epthru_pci_blk[i].dma_addr);
> @@ -1202,8 +1202,8 @@ megaraid_mbox_setup_dma_pools(adapter_t *adapter)
>
> // Allocate memory for each scatter-gather list. Request for 512 bytes
> // alignment for each sg list
> - raid_dev->sg_pool_handle = pci_pool_create("megaraid mbox sg",
> - adapter->pdev,
> + raid_dev->sg_pool_handle = dma_pool_create("megaraid mbox sg",
> + &adapter->pdev->dev,
> sizeof(mbox_sgl64) * MBOX_MAX_SG_SIZE,
> 512, 0);
>
> @@ -1213,7 +1213,7 @@ megaraid_mbox_setup_dma_pools(adapter_t *adapter)
>
> sg_pci_blk = raid_dev->sg_pool;
> for (i = 0; i < MBOX_MAX_SCSI_CMDS; i++) {
> - sg_pci_blk[i].vaddr = pci_pool_alloc(
> + sg_pci_blk[i].vaddr = dma_pool_alloc(
> raid_dev->sg_pool_handle,
> GFP_KERNEL,
> &sg_pci_blk[i].dma_addr);
> @@ -1249,29 +1249,29 @@ megaraid_mbox_teardown_dma_pools(adapter_t *adapter)
>
> sg_pci_blk = raid_dev->sg_pool;
> for (i = 0; i < MBOX_MAX_SCSI_CMDS && sg_pci_blk[i].vaddr; i++) {
> - pci_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr,
> + dma_pool_free(raid_dev->sg_pool_handle, sg_pci_blk[i].vaddr,
> sg_pci_blk[i].dma_addr);
> }
> if (raid_dev->sg_pool_handle)
> - pci_pool_destroy(raid_dev->sg_pool_handle);
> + dma_pool_destroy(raid_dev->sg_pool_handle);
>
>
> epthru_pci_blk = raid_dev->epthru_pool;
> for (i = 0; i < MBOX_MAX_SCSI_CMDS && epthru_pci_blk[i].vaddr; i++) {
> - pci_pool_free(raid_dev->epthru_pool_handle,
> + dma_pool_free(raid_dev->epthru_pool_handle,
> epthru_pci_blk[i].vaddr, epthru_pci_blk[i].dma_addr);
> }
> if (raid_dev->epthru_pool_handle)
> - pci_pool_destroy(raid_dev->epthru_pool_handle);
> + dma_pool_destroy(raid_dev->epthru_pool_handle);
>
>
> mbox_pci_blk = raid_dev->mbox_pool;
> for (i = 0; i < MBOX_MAX_SCSI_CMDS && mbox_pci_blk[i].vaddr; i++) {
> - pci_pool_free(raid_dev->mbox_pool_handle,
> + dma_pool_free(raid_dev->mbox_pool_handle,
> mbox_pci_blk[i].vaddr, mbox_pci_blk[i].dma_addr);
> }
> if (raid_dev->mbox_pool_handle)
> - pci_pool_destroy(raid_dev->mbox_pool_handle);
> + dma_pool_destroy(raid_dev->mbox_pool_handle);
>
> return;
> }
> diff --git a/drivers/scsi/megaraid/megaraid_mm.c b/drivers/scsi/megaraid/megaraid_mm.c
> index 4cf9ed9..11f518f 100644
> --- a/drivers/scsi/megaraid/megaraid_mm.c
> +++ b/drivers/scsi/megaraid/megaraid_mm.c
> @@ -574,7 +574,7 @@ mraid_mm_attach_buf(mraid_mmadp_t *adp, uioc_t *kioc, int xferlen)
>
> kioc->pool_index = right_pool;
> kioc->free_buf = 1;
> - kioc->buf_vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL,
> + kioc->buf_vaddr = dma_pool_alloc(pool->handle, GFP_KERNEL,
> &kioc->buf_paddr);
> spin_unlock_irqrestore(&pool->lock, flags);
>
> @@ -658,7 +658,7 @@ mraid_mm_dealloc_kioc(mraid_mmadp_t *adp, uioc_t *kioc)
> * not in use
> */
> if (kioc->free_buf == 1)
> - pci_pool_free(pool->handle, kioc->buf_vaddr,
> + dma_pool_free(pool->handle, kioc->buf_vaddr,
> kioc->buf_paddr);
> else
> pool->in_use = 0;
> @@ -940,8 +940,8 @@ mraid_mm_register_adp(mraid_mmadp_t *lld_adp)
> GFP_KERNEL);
> adapter->mbox_list = kmalloc(sizeof(mbox64_t) * lld_adp->max_kioc,
> GFP_KERNEL);
> - adapter->pthru_dma_pool = pci_pool_create("megaraid mm pthru pool",
> - adapter->pdev,
> + adapter->pthru_dma_pool = dma_pool_create("megaraid mm pthru pool",
> + &adapter->pdev->dev,
> sizeof(mraid_passthru_t),
> 16, 0);
>
> @@ -970,7 +970,7 @@ mraid_mm_register_adp(mraid_mmadp_t *lld_adp)
>
> kioc = adapter->kioc_list + i;
> kioc->cmdbuf = (uint64_t)(unsigned long)(mbox_list + i);
> - kioc->pthru32 = pci_pool_alloc(adapter->pthru_dma_pool,
> + kioc->pthru32 = dma_pool_alloc(adapter->pthru_dma_pool,
> GFP_KERNEL, &kioc->pthru32_h);
>
> if (!kioc->pthru32) {
> @@ -1006,7 +1006,7 @@ mraid_mm_register_adp(mraid_mmadp_t *lld_adp)
> for (i = 0; i < lld_adp->max_kioc; i++) {
> kioc = adapter->kioc_list + i;
> if (kioc->pthru32) {
> - pci_pool_free(adapter->pthru_dma_pool, kioc->pthru32,
> + dma_pool_free(adapter->pthru_dma_pool, kioc->pthru32,
> kioc->pthru32_h);
> }
> }
> @@ -1017,7 +1017,7 @@ mraid_mm_register_adp(mraid_mmadp_t *lld_adp)
> kfree(adapter->mbox_list);
>
> if (adapter->pthru_dma_pool)
> - pci_pool_destroy(adapter->pthru_dma_pool);
> + dma_pool_destroy(adapter->pthru_dma_pool);
>
> kfree(adapter);
>
> @@ -1086,14 +1086,15 @@ mraid_mm_setup_dma_pools(mraid_mmadp_t *adp)
> pool->buf_size = bufsize;
> spin_lock_init(&pool->lock);
>
> - pool->handle = pci_pool_create("megaraid mm data buffer",
> - adp->pdev, bufsize, 16, 0);
> + pool->handle = dma_pool_create("megaraid mm data buffer",
> + &adp->pdev->dev, bufsize, 16,
> + 0);
Indentation style change here

>
> if (!pool->handle) {
> goto dma_pool_setup_error;
> }
>
> - pool->vaddr = pci_pool_alloc(pool->handle, GFP_KERNEL,
> + pool->vaddr = dma_pool_alloc(pool->handle, GFP_KERNEL,
> &pool->paddr);
>
> if (!pool->vaddr)
> @@ -1163,14 +1164,14 @@ mraid_mm_free_adp_resources(mraid_mmadp_t *adp)
>
> kioc = adp->kioc_list + i;
>
> - pci_pool_free(adp->pthru_dma_pool, kioc->pthru32,
> + dma_pool_free(adp->pthru_dma_pool, kioc->pthru32,
> kioc->pthru32_h);
> }
>
> kfree(adp->kioc_list);
> kfree(adp->mbox_list);
>
> - pci_pool_destroy(adp->pthru_dma_pool);
> + dma_pool_destroy(adp->pthru_dma_pool);
>
>
> return;
> @@ -1194,10 +1195,10 @@ mraid_mm_teardown_dma_pools(mraid_mmadp_t *adp)
> if (pool->handle) {
>
> if (pool->vaddr)
> - pci_pool_free(pool->handle, pool->vaddr,
> + dma_pool_free(pool->handle, pool->vaddr,
> pool->paddr);
>
> - pci_pool_destroy(pool->handle);
> + dma_pool_destroy(pool->handle);
> pool->handle = NULL;
> }
> }
> diff --git a/drivers/scsi/megaraid/megaraid_sas_base.c b/drivers/scsi/megaraid/megaraid_sas_base.c
> index 70891a7..fb0c3b6 100644
> --- a/drivers/scsi/megaraid/megaraid_sas_base.c
> +++ b/drivers/scsi/megaraid/megaraid_sas_base.c
> @@ -3760,19 +3760,19 @@ static void megasas_teardown_frame_pool(struct megasas_instance *instance)
> cmd = instance->cmd_list[i];
>
> if (cmd->frame)
> - pci_pool_free(instance->frame_dma_pool, cmd->frame,
> + dma_pool_free(instance->frame_dma_pool, cmd->frame,
> cmd->frame_phys_addr);
>
> if (cmd->sense)
> - pci_pool_free(instance->sense_dma_pool, cmd->sense,
> + dma_pool_free(instance->sense_dma_pool, cmd->sense,
> cmd->sense_phys_addr);
> }
>
> /*
> * Now destroy the pool itself
> */
> - pci_pool_destroy(instance->frame_dma_pool);
> - pci_pool_destroy(instance->sense_dma_pool);
> + dma_pool_destroy(instance->frame_dma_pool);
> + dma_pool_destroy(instance->sense_dma_pool);
>
> instance->frame_dma_pool = NULL;
> instance->sense_dma_pool = NULL;
> @@ -3824,21 +3824,22 @@ static int megasas_create_frame_pool(struct megasas_instance *instance)
> /*
> * Use DMA pool facility provided by PCI layer
> */
> - instance->frame_dma_pool = pci_pool_create("megasas frame pool",
> - instance->pdev, total_sz, 256, 0);
> + instance->frame_dma_pool = dma_pool_create("megasas frame pool",
> + &instance->pdev->dev, total_sz, 256, 0);
>
> if (!instance->frame_dma_pool) {
> dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
> return -ENOMEM;
> }
>
> - instance->sense_dma_pool = pci_pool_create("megasas sense pool",
> - instance->pdev, 128, 4, 0);
> + instance->sense_dma_pool = dma_pool_create("megasas sense pool",
> + &instance->pdev->dev, 128, 4,
> + 0);
>
> if (!instance->sense_dma_pool) {
> dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
>
> - pci_pool_destroy(instance->frame_dma_pool);
> + dma_pool_destroy(instance->frame_dma_pool);
> instance->frame_dma_pool = NULL;
>
> return -ENOMEM;
> @@ -3853,10 +3854,10 @@ static int megasas_create_frame_pool(struct megasas_instance *instance)
>
> cmd = instance->cmd_list[i];
>
> - cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
> + cmd->frame = dma_pool_alloc(instance->frame_dma_pool,
> GFP_KERNEL, &cmd->frame_phys_addr);
>
> - cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
> + cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
> GFP_KERNEL, &cmd->sense_phys_addr);
>
> /*
> @@ -3864,7 +3865,7 @@ static int megasas_create_frame_pool(struct megasas_instance *instance)
> * whatever has been allocated
> */
> if (!cmd->frame || !cmd->sense) {
> - dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
> + dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
> megasas_teardown_frame_pool(instance);
> return -ENOMEM;
> }
> diff --git a/drivers/scsi/megaraid/megaraid_sas_fusion.c b/drivers/scsi/megaraid/megaraid_sas_fusion.c
> index 9a9c84f..33c6038 100644
> --- a/drivers/scsi/megaraid/megaraid_sas_fusion.c
> +++ b/drivers/scsi/megaraid/megaraid_sas_fusion.c
> @@ -316,20 +316,21 @@ megasas_free_cmds_fusion(struct megasas_instance *instance)
> cmd = fusion->cmd_list[i];
> if (cmd) {
> if (cmd->sg_frame)
> - pci_pool_free(fusion->sg_dma_pool, cmd->sg_frame,
> - cmd->sg_frame_phys_addr);
> + dma_pool_free(fusion->sg_dma_pool,
> + cmd->sg_frame,
> + cmd->sg_frame_phys_addr);
Indentation style change here

> if (cmd->sense)
> - pci_pool_free(fusion->sense_dma_pool, cmd->sense,
> - cmd->sense_phys_addr);
> + dma_pool_free(fusion->sense_dma_pool,
> + cmd->sense, cmd->sense_phys_addr);
And here too.

> }
> }
>
> if (fusion->sg_dma_pool) {
> - pci_pool_destroy(fusion->sg_dma_pool);
> + dma_pool_destroy(fusion->sg_dma_pool);
> fusion->sg_dma_pool = NULL;
> }
> if (fusion->sense_dma_pool) {
> - pci_pool_destroy(fusion->sense_dma_pool);
> + dma_pool_destroy(fusion->sense_dma_pool);
> fusion->sense_dma_pool = NULL;
> }
>
> @@ -346,11 +347,11 @@ megasas_free_cmds_fusion(struct megasas_instance *instance)
> fusion->request_alloc_sz, fusion->req_frames_desc,
> fusion->req_frames_desc_phys);
> if (fusion->io_request_frames)
> - pci_pool_free(fusion->io_request_frames_pool,
> + dma_pool_free(fusion->io_request_frames_pool,
> fusion->io_request_frames,
> fusion->io_request_frames_phys);
> if (fusion->io_request_frames_pool) {
> - pci_pool_destroy(fusion->io_request_frames_pool);
> + dma_pool_destroy(fusion->io_request_frames_pool);
> fusion->io_request_frames_pool = NULL;
> }
>
> @@ -379,11 +380,11 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
>
>
> fusion->sg_dma_pool =
> - pci_pool_create("mr_sg", instance->pdev,
> + dma_pool_create("mr_sg", &instance->pdev->dev,
> instance->max_chain_frame_sz, 4, 0);
> /* SCSI_SENSE_BUFFERSIZE = 96 bytes */
> fusion->sense_dma_pool =
> - pci_pool_create("mr_sense", instance->pdev,
> + dma_pool_create("mr_sense", &instance->pdev->dev,
> SCSI_SENSE_BUFFERSIZE, 64, 0);
>
> if (!fusion->sense_dma_pool || !fusion->sg_dma_pool) {
> @@ -397,10 +398,10 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
> */
> for (i = 0; i < max_cmd; i++) {
> cmd = fusion->cmd_list[i];
> - cmd->sg_frame = pci_pool_alloc(fusion->sg_dma_pool,
> + cmd->sg_frame = dma_pool_alloc(fusion->sg_dma_pool,
> GFP_KERNEL, &cmd->sg_frame_phys_addr);
>
> - cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
> + cmd->sense = dma_pool_alloc(fusion->sense_dma_pool,
> GFP_KERNEL, &cmd->sense_phys_addr);
> if (!cmd->sg_frame || !cmd->sense) {
> dev_err(&instance->pdev->dev,
> @@ -412,7 +413,7 @@ static int megasas_create_sg_sense_fusion(struct megasas_instance *instance)
> /* create sense buffer for the raid 1/10 fp */
> for (i = max_cmd; i < instance->max_mpt_cmds; i++) {
> cmd = fusion->cmd_list[i];
> - cmd->sense = pci_pool_alloc(fusion->sense_dma_pool,
> + cmd->sense = dma_pool_alloc(fusion->sense_dma_pool,
> GFP_KERNEL, &cmd->sense_phys_addr);
> if (!cmd->sense) {
> dev_err(&instance->pdev->dev,
> @@ -479,7 +480,7 @@ megasas_alloc_request_fusion(struct megasas_instance *instance)
> }
>
> fusion->io_request_frames_pool =
> - pci_pool_create("mr_ioreq", instance->pdev,
> + dma_pool_create("mr_ioreq", &instance->pdev->dev,
> fusion->io_frames_alloc_sz, 16, 0);
>
> if (!fusion->io_request_frames_pool) {
> @@ -489,7 +490,7 @@ megasas_alloc_request_fusion(struct megasas_instance *instance)
> }
>
> fusion->io_request_frames =
> - pci_pool_alloc(fusion->io_request_frames_pool,
> + dma_pool_alloc(fusion->io_request_frames_pool,
> GFP_KERNEL, &fusion->io_request_frames_phys);
> if (!fusion->io_request_frames) {
> dev_err(&instance->pdev->dev,
> @@ -509,7 +510,7 @@ megasas_alloc_reply_fusion(struct megasas_instance *instance)
>
> count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
> fusion->reply_frames_desc_pool =
> - pci_pool_create("mr_reply", instance->pdev,
> + dma_pool_create("mr_reply", &instance->pdev->dev,
> fusion->reply_alloc_sz * count, 16, 0);
>
> if (!fusion->reply_frames_desc_pool) {
> @@ -519,7 +520,7 @@ megasas_alloc_reply_fusion(struct megasas_instance *instance)
> }
>
> fusion->reply_frames_desc[0] =
> - pci_pool_alloc(fusion->reply_frames_desc_pool,
> + dma_pool_alloc(fusion->reply_frames_desc_pool,
> GFP_KERNEL, &fusion->reply_frames_desc_phys[0]);
> if (!fusion->reply_frames_desc[0]) {
> dev_err(&instance->pdev->dev,
> @@ -562,8 +563,10 @@ megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
> memset(fusion->rdpq_virt, 0,
> sizeof(struct MPI2_IOC_INIT_RDPQ_ARRAY_ENTRY) * MAX_MSIX_QUEUES_FUSION);
> count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
> - fusion->reply_frames_desc_pool = pci_pool_create("mr_rdpq",
> - instance->pdev, fusion->reply_alloc_sz, 16, 0);
> + fusion->reply_frames_desc_pool = dma_pool_create("mr_rdpq",
> + &instance->pdev->dev,
> + fusion->reply_alloc_sz,
> + 16, 0);
>
> if (!fusion->reply_frames_desc_pool) {
> dev_err(&instance->pdev->dev,
> @@ -573,7 +576,7 @@ megasas_alloc_rdpq_fusion(struct megasas_instance *instance)
>
> for (i = 0; i < count; i++) {
> fusion->reply_frames_desc[i] =
> - pci_pool_alloc(fusion->reply_frames_desc_pool,
> + dma_pool_alloc(fusion->reply_frames_desc_pool,
> GFP_KERNEL, &fusion->reply_frames_desc_phys[i]);
> if (!fusion->reply_frames_desc[i]) {
> dev_err(&instance->pdev->dev,
> @@ -601,13 +604,13 @@ megasas_free_rdpq_fusion(struct megasas_instance *instance) {
>
> for (i = 0; i < MAX_MSIX_QUEUES_FUSION; i++) {
> if (fusion->reply_frames_desc[i])
> - pci_pool_free(fusion->reply_frames_desc_pool,
> + dma_pool_free(fusion->reply_frames_desc_pool,
> fusion->reply_frames_desc[i],
> fusion->reply_frames_desc_phys[i]);
> }
>
> if (fusion->reply_frames_desc_pool)
> - pci_pool_destroy(fusion->reply_frames_desc_pool);
> + dma_pool_destroy(fusion->reply_frames_desc_pool);
>
> if (fusion->rdpq_virt)
> pci_free_consistent(instance->pdev,
> @@ -623,12 +626,12 @@ megasas_free_reply_fusion(struct megasas_instance *instance) {
> fusion = instance->ctrl_context;
>
> if (fusion->reply_frames_desc[0])
> - pci_pool_free(fusion->reply_frames_desc_pool,
> + dma_pool_free(fusion->reply_frames_desc_pool,
> fusion->reply_frames_desc[0],
> fusion->reply_frames_desc_phys[0]);
>
> if (fusion->reply_frames_desc_pool)
> - pci_pool_destroy(fusion->reply_frames_desc_pool);
> + dma_pool_destroy(fusion->reply_frames_desc_pool);
>
> }
>
> --
> 2.9.3
>

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