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author | Joe Lawrence <joe.lawrence@stratus.com> | 2014-06-25 23:05:34 +0200 |
---|---|---|
committer | Christoph Hellwig <hch@lst.de> | 2014-07-25 23:16:57 +0200 |
commit | 35b623628033548348d8005e22d8962a11b4a468 (patch) | |
tree | 9bc01a311ea42f736209d247344ea879dc1f4ec6 | |
parent | mpt3sas: correct scsi_{target,device} hostdata allocation (diff) | |
download | linux-35b623628033548348d8005e22d8962a11b4a468.tar.xz linux-35b623628033548348d8005e22d8962a11b4a468.zip |
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>
-rw-r--r-- | drivers/scsi/mpt3sas/mpt3sas_scsih.c | 56 |
1 files changed, 31 insertions, 25 deletions
diff --git a/drivers/scsi/mpt3sas/mpt3sas_scsih.c b/drivers/scsi/mpt3sas/mpt3sas_scsih.c index 08a95b2a2f2e..57020d528035 100644 --- a/drivers/scsi/mpt3sas/mpt3sas_scsih.c +++ b/drivers/scsi/mpt3sas/mpt3sas_scsih.c @@ -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) @@ -7194,18 +7207,11 @@ mpt3sas_scsih_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index, return 1; } - fw_event = kzalloc(sizeof(struct fw_event_work), 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) { + 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__); - kfree(fw_event); return 1; } |