4.14-stable review patch. If anyone has any objections, please let me know.
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From: Shivasharan S shivasharan.srikanteshwara@broadcom.com
commit 49a7a4adb0167b656b8dfb6ccb83220d553a1860 upstream.
No functional change. Code refactoring to improve readability. Move the code to allocate and free controller memory into separate functions.
Signed-off-by: Kashyap Desai kashyap.desai@broadcom.com Signed-off-by: Shivasharan S shivasharan.srikanteshwara@broadcom.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/scsi/megaraid/megaraid_sas_base.c | 122 ++++++++++++++++++------------ 1 file changed, 76 insertions(+), 46 deletions(-)
--- a/drivers/scsi/megaraid/megaraid_sas_base.c +++ b/drivers/scsi/megaraid/megaraid_sas_base.c @@ -6016,6 +6016,75 @@ static inline void megasas_set_adapter_t } }
+static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance) +{ + instance->producer = pci_alloc_consistent(instance->pdev, sizeof(u32), + &instance->producer_h); + instance->consumer = pci_alloc_consistent(instance->pdev, sizeof(u32), + &instance->consumer_h); + + if (!instance->producer || !instance->consumer) { + dev_err(&instance->pdev->dev, + "Failed to allocate memory for producer, consumer\n"); + return -1; + } + + *instance->producer = 0; + *instance->consumer = 0; + return 0; +} + +/** + * megasas_alloc_ctrl_mem - Allocate per controller memory for core data + * structures which are not common across MFI + * adapters and fusion adapters. + * For MFI based adapters, allocate producer and + * consumer buffers. For fusion adapters, allocate + * memory for fusion context. + * @instance: Adapter soft state + * return: 0 for SUCCESS + */ +static int megasas_alloc_ctrl_mem(struct megasas_instance *instance) +{ + switch (instance->adapter_type) { + case MFI_SERIES: + if (megasas_alloc_mfi_ctrl_mem(instance)) + return -ENOMEM; + break; + case VENTURA_SERIES: + case THUNDERBOLT_SERIES: + case INVADER_SERIES: + if (megasas_alloc_fusion_context(instance)) + return -ENOMEM; + break; + } + + return 0; +} + +/* + * megasas_free_ctrl_mem - Free fusion context for fusion adapters and + * producer, consumer buffers for MFI adapters + * + * @instance - Adapter soft instance + * + */ +static inline void megasas_free_ctrl_mem(struct megasas_instance *instance) +{ + if (instance->adapter_type == MFI_SERIES) { + if (instance->producer) + pci_free_consistent(instance->pdev, sizeof(u32), + instance->producer, + instance->producer_h); + if (instance->consumer) + pci_free_consistent(instance->pdev, sizeof(u32), + instance->consumer, + instance->consumer_h); + } else { + megasas_free_fusion_context(instance); + } +} + /** * megasas_probe_one - PCI hotplug entry point * @pdev: PCI device structure @@ -6074,33 +6143,8 @@ static int megasas_probe_one(struct pci_
megasas_set_adapter_type(instance);
- switch (instance->adapter_type) { - case MFI_SERIES: - instance->producer = - pci_alloc_consistent(pdev, sizeof(u32), - &instance->producer_h); - instance->consumer = - pci_alloc_consistent(pdev, sizeof(u32), - &instance->consumer_h); - - if (!instance->producer || !instance->consumer) { - dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate " - "memory for producer, consumer\n"); - goto fail_alloc_dma_buf; - } - - *instance->producer = 0; - *instance->consumer = 0; - - break; - case VENTURA_SERIES: - case THUNDERBOLT_SERIES: - case INVADER_SERIES: - if (megasas_alloc_fusion_context(instance)) { - megasas_free_fusion_context(instance); - goto fail_alloc_dma_buf; - } - } + if (megasas_alloc_ctrl_mem(instance)) + goto fail_alloc_dma_buf;
/* Crash dump feature related initialisation*/ instance->drv_buf_index = 0; @@ -6296,12 +6340,7 @@ fail_alloc_dma_buf: pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES), instance->tgt_prop, instance->tgt_prop_h); - if (instance->producer) - pci_free_consistent(pdev, sizeof(u32), instance->producer, - instance->producer_h); - if (instance->consumer) - pci_free_consistent(pdev, sizeof(u32), instance->consumer, - instance->consumer_h); + megasas_free_ctrl_mem(instance); scsi_host_put(host);
fail_alloc_instance: @@ -6572,12 +6611,8 @@ fail_init_mfi: pci_free_consistent(pdev, sizeof(struct MR_TARGET_PROPERTIES), instance->tgt_prop, instance->tgt_prop_h); - if (instance->producer) - pci_free_consistent(pdev, sizeof(u32), instance->producer, - instance->producer_h); - if (instance->consumer) - pci_free_consistent(pdev, sizeof(u32), instance->consumer, - instance->consumer_h); + + megasas_free_ctrl_mem(instance); scsi_host_put(host);
fail_set_dma_mask: @@ -6718,15 +6753,8 @@ skip_firing_dcmds: fusion->pd_seq_sync[i], fusion->pd_seq_phys[i]); } - megasas_free_fusion_context(instance); } else { megasas_release_mfi(instance); - pci_free_consistent(pdev, sizeof(u32), - instance->producer, - instance->producer_h); - pci_free_consistent(pdev, sizeof(u32), - instance->consumer, - instance->consumer_h); }
kfree(instance->ctrl_info); @@ -6767,6 +6795,8 @@ skip_firing_dcmds: pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO), instance->system_info_buf, instance->system_info_h);
+ megasas_free_ctrl_mem(instance); + scsi_host_put(host);
pci_disable_device(pdev);