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Message-Id: <20180716073456.423290314@linuxfoundation.org>
Date: Mon, 16 Jul 2018 09:35:26 +0200
From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
stable@...r.kernel.org, Kashyap Desai <kashyap.desai@...adcom.com>,
Shivasharan S <shivasharan.srikanteshwara@...adcom.com>,
"Martin K. Petersen" <martin.petersen@...cle.com>
Subject: [PATCH 4.14 29/54] scsi: megaraid_sas: Create separate functions to allocate ctrl memory
4.14-stable review patch. If anyone has any objections, please let me know.
------------------
From: Shivasharan S <shivasharan.srikanteshwara@...adcom.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@...adcom.com>
Signed-off-by: Shivasharan S <shivasharan.srikanteshwara@...adcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@...cle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.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);
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