From fe2a70eefa18a3e419dd9a23e16af14258b7cc20 Mon Sep 17 00:00:00 2001 From: Somnath Kotur Date: Thu, 21 Apr 2011 03:18:12 +0000 Subject: [PATCH] be2net: Fixed a bug in be_cmd_get_regs(). Same WRB entry was being reused over different iterations of a loop while issuing non-embedded IOCTL requests.Fixed couple of minor bugs in this path as well. Re-factored code to alloc/free memory for DMA outside of loop Signed-off-by: Somnath Kotur Signed-off-by: David S. Miller --- drivers/net/benet/be_cmds.c | 53 ++++++++++++++++++++----------------- 1 file changed, 28 insertions(+), 25 deletions(-) diff --git a/drivers/net/benet/be_cmds.c b/drivers/net/benet/be_cmds.c index af8cf3d7c1e3..0fc06d363806 100644 --- a/drivers/net/benet/be_cmds.c +++ b/drivers/net/benet/be_cmds.c @@ -1214,8 +1214,8 @@ int be_cmd_get_reg_len(struct be_adapter *adapter, u32 *log_size) if (!status) { struct be_cmd_resp_get_fat *resp = embedded_payload(wrb); if (log_size && resp->log_size) - *log_size = le32_to_cpu(resp->log_size - - sizeof(u32)); + *log_size = le32_to_cpu(resp->log_size) - + sizeof(u32); } err: spin_unlock_bh(&adapter->mcc_lock); @@ -1228,7 +1228,8 @@ void be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf) struct be_mcc_wrb *wrb; struct be_cmd_req_get_fat *req; struct be_sge *sge; - u32 offset = 0, total_size, buf_size, log_offset = sizeof(u32); + u32 offset = 0, total_size, buf_size, + log_offset = sizeof(u32), payload_len; int status; if (buf_len == 0) @@ -1236,37 +1237,39 @@ void be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf) total_size = buf_len; + get_fat_cmd.size = sizeof(struct be_cmd_req_get_fat) + 60*1024; + get_fat_cmd.va = pci_alloc_consistent(adapter->pdev, + get_fat_cmd.size, + &get_fat_cmd.dma); + if (!get_fat_cmd.va) { + status = -ENOMEM; + dev_err(&adapter->pdev->dev, + "Memory allocation failure while retrieving FAT data\n"); + return; + } + spin_lock_bh(&adapter->mcc_lock); - wrb = wrb_from_mccq(adapter); - if (!wrb) { - status = -EBUSY; - goto err; - } while (total_size) { buf_size = min(total_size, (u32)60*1024); total_size -= buf_size; - get_fat_cmd.size = sizeof(struct be_cmd_req_get_fat) + buf_size; - get_fat_cmd.va = pci_alloc_consistent(adapter->pdev, - get_fat_cmd.size, - &get_fat_cmd.dma); - if (!get_fat_cmd.va) { - status = -ENOMEM; - dev_err(&adapter->pdev->dev, - "Memory allocation failure while retrieving FAT data\n"); + wrb = wrb_from_mccq(adapter); + if (!wrb) { + status = -EBUSY; goto err; } req = get_fat_cmd.va; sge = nonembedded_sgl(wrb); - be_wrb_hdr_prepare(wrb, get_fat_cmd.size, false, 1, + payload_len = sizeof(struct be_cmd_req_get_fat) + buf_size; + be_wrb_hdr_prepare(wrb, payload_len, false, 1, OPCODE_COMMON_MANAGE_FAT); be_cmd_hdr_prepare(&req->hdr, CMD_SUBSYSTEM_COMMON, - OPCODE_COMMON_MANAGE_FAT, get_fat_cmd.size); + OPCODE_COMMON_MANAGE_FAT, payload_len); - sge->pa_hi = cpu_to_le32(upper_32_bits(get_fat_cmd.size)); + sge->pa_hi = cpu_to_le32(upper_32_bits(get_fat_cmd.dma)); sge->pa_lo = cpu_to_le32(get_fat_cmd.dma & 0xFFFFFFFF); sge->len = cpu_to_le32(get_fat_cmd.size); @@ -1281,17 +1284,17 @@ void be_cmd_get_regs(struct be_adapter *adapter, u32 buf_len, void *buf) memcpy(buf + offset, resp->data_buffer, resp->read_log_length); - } - pci_free_consistent(adapter->pdev, get_fat_cmd.size, - get_fat_cmd.va, - get_fat_cmd.dma); - if (status) + } else { dev_err(&adapter->pdev->dev, "FAT Table Retrieve error\n"); - + goto err; + } offset += buf_size; log_offset += buf_size; } err: + pci_free_consistent(adapter->pdev, get_fat_cmd.size, + get_fat_cmd.va, + get_fat_cmd.dma); spin_unlock_bh(&adapter->mcc_lock); } -- 2.20.1