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[SCSI] qla4xxx: Fix the freeing of the buffer allocated for DMA 

Fixed the DMA allocated memory freeing which wasn't taken care
in many cases.

Signed-off-by: Prasanna Mumbai <prasanna.mumbai@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Signed-off-by: Ravi Anand <ravi.anand@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Prasanna Mumbai 2010-07-10 14:49:38 +05:30 committed by James Bottomley
parent b966346c34
commit beabe7c183
2 changed files with 32 additions and 21 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
drivers/scsi/qla4xxx/ql4_init.c
View File

@ -444,7 +444,7 @@ static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
if (fw_ddb_entry == NULL) {
DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
ha->host_no, __func__));
return NULL;
goto exit_get_ddb_entry_no_free;
}
if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
@ -454,7 +454,7 @@ static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
DEBUG2(printk("scsi%ld: %s: failed get_ddb_entry for "
"fw_ddb_index %d\n", ha->host_no, __func__,
fw_ddb_index));
return NULL;
goto exit_get_ddb_entry;
}
/* Allocate DDB if not already allocated. */
@ -472,6 +472,7 @@ static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
}
}
/* if not found allocate new ddb */
if (!found) {
DEBUG2(printk("scsi%ld: %s: ddb[%d] not found - allocating "
"new ddb\n", ha->host_no, __func__,
@ -480,10 +481,11 @@ static struct ddb_entry* qla4xxx_get_ddb_entry(struct scsi_qla_host *ha,
ddb_entry = qla4xxx_alloc_ddb(ha, fw_ddb_index);
}
/* if not found allocate new ddb */
exit_get_ddb_entry:
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
fw_ddb_entry_dma);
exit_get_ddb_entry_no_free:
return ddb_entry;
}
@ -511,7 +513,8 @@ static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
if (ddb_entry == NULL) {
DEBUG2(printk("scsi%ld: %s: ddb_entry is NULL\n", ha->host_no,
__func__));
goto exit_update_ddb;
goto exit_update_ddb_no_free;
}
/* Make sure the dma buffer is valid */
@ -522,7 +525,7 @@ static int qla4xxx_update_ddb_entry(struct scsi_qla_host *ha,
DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
ha->host_no, __func__));
goto exit_update_ddb;
goto exit_update_ddb_no_free;
}
if (qla4xxx_get_fwddb_entry(ha, fw_ddb_index, fw_ddb_entry,
@ -605,6 +608,7 @@ exit_update_ddb:
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
fw_ddb_entry, fw_ddb_entry_dma);
exit_update_ddb_no_free:
return status;
}
@ -689,7 +693,7 @@ int qla4_is_relogin_allowed(struct scsi_qla_host *ha, uint32_t conn_err)
**/
static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
{
int status = QLA_SUCCESS;
int status = QLA_ERROR;
uint32_t fw_ddb_index = 0;
uint32_t next_fw_ddb_index = 0;
uint32_t ddb_state;
@ -705,7 +709,8 @@ static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
if (fw_ddb_entry == NULL) {
DEBUG2(dev_info(&ha->pdev->dev, "%s: DMA alloc failed\n",
__func__));
return QLA_ERROR;
goto exit_build_ddb_list_no_free;
}
dev_info(&ha->pdev->dev, "Initializing DDBs ...\n");
@ -720,7 +725,7 @@ static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
DEBUG2(printk("scsi%ld: %s: get_ddb_entry, "
"fw_ddb_index %d failed", ha->host_no,
__func__, fw_ddb_index));
return QLA_ERROR;
goto exit_build_ddb_list;
}
DEBUG2(printk("scsi%ld: %s: Getting DDB[%d] ddbstate=0x%x, "
@ -750,7 +755,7 @@ static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
"get_ddb_entry %d failed\n",
ha->host_no,
__func__, fw_ddb_index));
return QLA_ERROR;
goto exit_build_ddb_list;
}
}
}
@ -770,7 +775,7 @@ static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
DEBUG2(printk("scsi%ld: %s: Unable to allocate memory "
"for device at fw_ddb_index %d\n",
ha->host_no, __func__, fw_ddb_index));
return QLA_ERROR;
goto exit_build_ddb_list;
}
/* Fill in the device structure */
if (qla4xxx_update_ddb_entry(ha, ddb_entry, fw_ddb_index) ==
@ -778,11 +783,10 @@ static int qla4xxx_build_ddb_list(struct scsi_qla_host *ha)
ha->fw_ddb_index_map[fw_ddb_index] =
(struct ddb_entry *)INVALID_ENTRY;
DEBUG2(printk("scsi%ld: %s: update_ddb_entry failed "
"for fw_ddb_index %d.\n",
ha->host_no, __func__, fw_ddb_index));
return QLA_ERROR;
goto exit_build_ddb_list;
}
next_one:
@ -792,8 +796,14 @@ next_one:
break;
}
status = QLA_SUCCESS;
dev_info(&ha->pdev->dev, "DDB list done..\n");
exit_build_ddb_list:
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry), fw_ddb_entry,
fw_ddb_entry_dma);
exit_build_ddb_list_no_free:
return status;
}

15
drivers/scsi/qla4xxx/ql4_mbx.c
View File

@ -317,7 +317,7 @@ int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
if (init_fw_cb == NULL) {
DEBUG2(printk("scsi%ld: %s: Unable to alloc init_cb\n",
ha->host_no, __func__));
return 10;
goto exit_init_fw_cb_no_free;
}
memset(init_fw_cb, 0, sizeof(struct addr_ctrl_blk));
@ -373,7 +373,7 @@ int qla4xxx_initialize_fw_cb(struct scsi_qla_host * ha)
exit_init_fw_cb:
dma_free_coherent(&ha->pdev->dev, sizeof(struct addr_ctrl_blk),
init_fw_cb, init_fw_cb_dma);
exit_init_fw_cb_no_free:
return status;
}
@ -394,7 +394,7 @@ int qla4xxx_get_dhcp_ip_address(struct scsi_qla_host * ha)
if (init_fw_cb == NULL) {
printk("scsi%ld: %s: Unable to alloc init_cb\n", ha->host_no,
__func__);
return 10;
return QLA_ERROR;
}
/* Get Initialize Firmware Control Block. */
@ -1019,16 +1019,16 @@ int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
DEBUG2(printk("scsi%ld: %s: Unable to allocate dma buffer.\n",
ha->host_no, __func__));
ret_val = QLA_ERROR;
goto qla4xxx_send_tgts_exit;
goto exit_send_tgts_no_free;
}
ret_val = qla4xxx_get_default_ddb(ha, fw_ddb_entry_dma);
if (ret_val != QLA_SUCCESS)
goto qla4xxx_send_tgts_exit;
goto exit_send_tgts;
ret_val = qla4xxx_req_ddb_entry(ha, &ddb_index);
if (ret_val != QLA_SUCCESS)
goto qla4xxx_send_tgts_exit;
goto exit_send_tgts;
memset(fw_ddb_entry->iscsi_alias, 0,
sizeof(fw_ddb_entry->iscsi_alias));
@ -1050,9 +1050,10 @@ int qla4xxx_send_tgts(struct scsi_qla_host *ha, char *ip, uint16_t port)
ret_val = qla4xxx_set_ddb_entry(ha, ddb_index, fw_ddb_entry_dma);
qla4xxx_send_tgts_exit:
exit_send_tgts:
dma_free_coherent(&ha->pdev->dev, sizeof(*fw_ddb_entry),
fw_ddb_entry, fw_ddb_entry_dma);
exit_send_tgts_no_free:
return ret_val;
}