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mpt3sas: Fix static analyzer(coverity) tool identified defects 

1.Wrong size of argument is being passed
 The size of struct being passed as an argument to memset func and area of
 memory being pointed by an instance of struct in memset func should be of
 same structure type.
2.Dereference null return value
3.Array compared against '0'
 Check whether value pointed by particular index of an array is null or not
 in "if" statement.

Signed-off-by: Suganath prabu Subramani <suganath-prabu.subramani@avagotech.com>
Signed-off-by: Chaitra P B <chaitra.basappa@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Suganath prabu Subramani 2016-01-28 12:07:00 +05:30 committed by Martin K. Petersen
parent ce61c57427
commit 869817f9e9
3 changed files with 5 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/scsi/mpt3sas/mpt3sas_ctl.c
View File

@ -401,7 +401,8 @@ mpt3sas_ctl_event_callback(struct MPT3SAS_ADAPTER *ioc, u8 msix_index,
Mpi2EventNotificationReply_t *mpi_reply; Mpi2EventNotificationReply_t *mpi_reply;
mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply); mpi_reply = mpt3sas_base_get_reply_virt_addr(ioc, reply);
mpt3sas_ctl_add_to_event_log(ioc, mpi_reply); if (mpi_reply)
mpt3sas_ctl_add_to_event_log(ioc, mpi_reply);
return 1; return 1;
} }

4
drivers/scsi/mpt3sas/mpt3sas_scsih.c
View File

@ -2399,7 +2399,7 @@ _scsih_tm_display_info(struct MPT3SAS_ADAPTER *ioc, struct scsi_cmnd *scmd)
(unsigned long long) (unsigned long long)
sas_device->enclosure_logical_id, sas_device->enclosure_logical_id,
sas_device->slot); sas_device->slot);
if (sas_device->connector_name) if (sas_device->connector_name[0] != '\0')
starget_printk(KERN_INFO, starget, starget_printk(KERN_INFO, starget,
"enclosure level(0x%04x),connector name(%s)\n", "enclosure level(0x%04x),connector name(%s)\n",
sas_device->enclosure_level, sas_device->enclosure_level,
@ -3134,7 +3134,7 @@ _scsih_tm_tr_send(struct MPT3SAS_ADAPTER *ioc, u16 handle)
" slot(%d)\n", ioc->name, (unsigned long long) " slot(%d)\n", ioc->name, (unsigned long long)
sas_device->enclosure_logical_id, sas_device->enclosure_logical_id,
sas_device->slot)); sas_device->slot));
if (sas_device->connector_name) if (sas_device->connector_name[0] != '\0')
dewtprintk(ioc, pr_info(MPT3SAS_FMT dewtprintk(ioc, pr_info(MPT3SAS_FMT
"setting delete flag: enclosure level(0x%04x)," "setting delete flag: enclosure level(0x%04x),"
" connector name( %s)\n", ioc->name, " connector name( %s)\n", ioc->name,

2
drivers/scsi/mpt3sas/mpt3sas_transport.c
View File

@ -1600,7 +1600,7 @@ _transport_phy_reset(struct sas_phy *phy, int hard_reset)
SMP_PHY_CONTROL_LINK_RESET); SMP_PHY_CONTROL_LINK_RESET);
/* handle hba phys */ /* handle hba phys */
memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlReply_t)); memset(&mpi_request, 0, sizeof(Mpi2SasIoUnitControlRequest_t));
mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL; mpi_request.Function = MPI2_FUNCTION_SAS_IO_UNIT_CONTROL;
mpi_request.Operation = hard_reset ? mpi_request.Operation = hard_reset ?
MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET; MPI2_SAS_OP_PHY_HARD_RESET : MPI2_SAS_OP_PHY_LINK_RESET;