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mpt3sas: combine fw_event_work and its event_data 

Tack the firmware reply event_data payload to the end of its
corresponding struct fw_event_work allocation.  This matches the
convention in the mptfusion driver and simplifies the code.

This avoids the following smatch warning:

  drivers/scsi/mpt3sas/mpt3sas_scsih.c:2519
    mpt3sas_send_trigger_data_event() warn: possible memory leak of
    'fw_event'

Signed-off-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Joe Lawrence 2014-06-25 17:05:34 -04:00 committed by Christoph Hellwig
parent 62c4da449d
commit 35b6236280
1 changed files with 31 additions and 25 deletions
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56
drivers/scsi/mpt3sas/mpt3sas_scsih.c
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@ -190,7 +190,7 @@ struct fw_event_work {
u8 VP_ID;
u8 ignore;
u16 event;
void *event_data;
char event_data[0] __aligned(4);
};
/* raid transport support */
@ -2492,7 +2492,6 @@ _scsih_fw_event_free(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work
spin_lock_irqsave(&ioc->fw_event_lock, flags);
list_del(&fw_event->list);
kfree(fw_event->event_data);
kfree(fw_event);
spin_unlock_irqrestore(&ioc->fw_event_lock, flags);
}
@ -2513,12 +2512,10 @@ mpt3sas_send_trigger_data_event(struct MPT3SAS_ADAPTER *ioc,
if (ioc->is_driver_loading)
return;
fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC);
fw_event = kzalloc(sizeof(*fw_event) + sizeof(*event_data),
GFP_ATOMIC);
if (!fw_event)
return;
fw_event->event_data = kzalloc(sizeof(*event_data), GFP_ATOMIC);
if (!fw_event->event_data)
return;
fw_event->event = MPT3SAS_PROCESS_TRIGGER_DIAG;
fw_event->ioc = ioc;
memcpy(fw_event->event_data, event_data, sizeof(*event_data));
@ -3213,7 +3210,8 @@ _scsih_check_topo_delete_events(struct MPT3SAS_ADAPTER *ioc,
if (fw_event->event != MPI2_EVENT_SAS_TOPOLOGY_CHANGE_LIST ||
fw_event->ignore)
continue;
local_event_data = fw_event->event_data;
local_event_data = (Mpi2EventDataSasTopologyChangeList_t *)
fw_event->event_data;
if (local_event_data->ExpStatus ==
MPI2_EVENT_SAS_TOPO_ES_ADDED ||
local_event_data->ExpStatus ==
@ -5045,7 +5043,9 @@ _scsih_sas_topology_change_event(struct MPT3SAS_ADAPTER *ioc,
u64 sas_address;
unsigned long flags;
u8 link_rate, prev_link_rate;
Mpi2EventDataSasTopologyChangeList_t *event_data = fw_event->event_data;
Mpi2EventDataSasTopologyChangeList_t *event_data =
(Mpi2EventDataSasTopologyChangeList_t *)
fw_event->event_data;
#ifdef CONFIG_SCSI_MPT3SAS_LOGGING
if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
@ -5243,7 +5243,8 @@ _scsih_sas_device_status_change_event(struct MPT3SAS_ADAPTER *ioc,
u64 sas_address;
unsigned long flags;
Mpi2EventDataSasDeviceStatusChange_t *event_data =
fw_event->event_data;
(Mpi2EventDataSasDeviceStatusChange_t *)
fw_event->event_data;
#ifdef CONFIG_SCSI_MPT3SAS_LOGGING
if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
@ -5339,6 +5340,7 @@ _scsih_sas_enclosure_dev_status_change_event(struct MPT3SAS_ADAPTER *ioc,
#ifdef CONFIG_SCSI_MPT3SAS_LOGGING
if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
_scsih_sas_enclosure_dev_status_change_event_debug(ioc,
(Mpi2EventDataSasEnclDevStatusChange_t *)
fw_event->event_data);
#endif
}
@ -5363,7 +5365,9 @@ _scsih_sas_broadcast_primitive_event(struct MPT3SAS_ADAPTER *ioc,
u32 termination_count;
u32 query_count;
Mpi2SCSITaskManagementReply_t *mpi_reply;
Mpi2EventDataSasBroadcastPrimitive_t *event_data = fw_event->event_data;
Mpi2EventDataSasBroadcastPrimitive_t *event_data =
(Mpi2EventDataSasBroadcastPrimitive_t *)
fw_event->event_data;
u16 ioc_status;
unsigned long flags;
int r;
@ -5515,7 +5519,8 @@ static void
_scsih_sas_discovery_event(struct MPT3SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
Mpi2EventDataSasDiscovery_t *event_data = fw_event->event_data;
Mpi2EventDataSasDiscovery_t *event_data =
(Mpi2EventDataSasDiscovery_t *) fw_event->event_data;
#ifdef CONFIG_SCSI_MPT3SAS_LOGGING
if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK) {
@ -6001,7 +6006,9 @@ _scsih_sas_ir_config_change_event(struct MPT3SAS_ADAPTER *ioc,
Mpi2EventIrConfigElement_t *element;
int i;
u8 foreign_config;
Mpi2EventDataIrConfigChangeList_t *event_data = fw_event->event_data;
Mpi2EventDataIrConfigChangeList_t *event_data =
(Mpi2EventDataIrConfigChangeList_t *)
fw_event->event_data;
#ifdef CONFIG_SCSI_MPT3SAS_LOGGING
if (ioc->logging_level & MPT_DEBUG_EVENT_WORK_TASK)
@ -6071,7 +6078,8 @@ _scsih_sas_ir_volume_event(struct MPT3SAS_ADAPTER *ioc,
u16 handle;
u32 state;
int rc;
Mpi2EventDataIrVolume_t *event_data = fw_event->event_data;
Mpi2EventDataIrVolume_t *event_data =
(Mpi2EventDataIrVolume_t *) fw_event->event_data;
if (ioc->shost_recovery)
return;
@ -6154,7 +6162,8 @@ _scsih_sas_ir_physical_disk_event(struct MPT3SAS_ADAPTER *ioc,
Mpi2ConfigReply_t mpi_reply;
Mpi2SasDevicePage0_t sas_device_pg0;
u32 ioc_status;
Mpi2EventDataIrPhysicalDisk_t *event_data = fw_event->event_data;
Mpi2EventDataIrPhysicalDisk_t *event_data =
(Mpi2EventDataIrPhysicalDisk_t *) fw_event->event_data;
u64 sas_address;
if (ioc->shost_recovery)
@ -6274,7 +6283,9 @@ static void
_scsih_sas_ir_operation_status_event(struct MPT3SAS_ADAPTER *ioc,
struct fw_event_work *fw_event)
{
Mpi2EventDataIrOperationStatus_t *event_data = fw_event->event_data;
Mpi2EventDataIrOperationStatus_t *event_data =
(Mpi2EventDataIrOperationStatus_t *)
fw_event->event_data;
static struct _raid_device *raid_device;
unsigned long flags;
u16 handle;
@ -7036,7 +7047,9 @@ _mpt3sas_fw_work(struct MPT3SAS_ADAPTER *ioc, struct fw_event_work *fw_event)
switch (fw_event->event) {
case MPT3SAS_PROCESS_TRIGGER_DIAG:
mpt3sas_process_trigger_data(ioc, fw_event->event_data);
mpt3sas_process_trigger_data(ioc,
(struct SL_WH_TRIGGERS_EVENT_DATA_T *)
fw_event->event_data);
break;
case MPT3SAS_REMOVE_UNRESPONDING_DEVICES:
while (scsi_host_in_recovery(ioc->shost) || ioc->shost_recovery)
@ -7194,20 +7207,13 @@ mpt3sas_scsih_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
return 1;
}
fw_event = kzalloc(sizeof(struct fw_event_work), GFP_ATOMIC);
sz = le16_to_cpu(mpi_reply->EventDataLength) * 4;
fw_event = kzalloc(sizeof(*fw_event) + sz, GFP_ATOMIC);
if (!fw_event) {
pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
return 1;
}
sz = le16_to_cpu(mpi_reply->EventDataLength) * 4;
fw_event->event_data = kzalloc(sz, GFP_ATOMIC);
if (!fw_event->event_data) {
pr_err(MPT3SAS_FMT "failure at %s:%d/%s()!\n",
ioc->name, __FILE__, __LINE__, __func__);
kfree(fw_event);
return 1;
}
memcpy(fw_event->event_data, mpi_reply->EventData, sz);
fw_event->ioc = ioc;