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[SCSI] mpt2sas: Infinite loop can occur if MPI2_IOCSTATUS_CONFIG_INVALID_PAGE is not returned

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Infinite loop can occur if IOCStatus is not equal to
MPI2_IOCSTATUS_CONFIG_INVALID_PAGE value in the while loops in functions
_scsih_search_responding_sas_devices,
_scsih_search_responding_raid_devices and
_scsih_search_responding_expanders

So, Instead of checking for MPI2_IOCSTATUS_CONFIG_INVALID_PAGE value,
in this patch code is modified to check for IOCStatus not equals to
MPI2_IOCSTATUS_SUCCESS to break the while loop.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Sreekanth Reddy 2013-07-25 11:29:45 +05:30 committed by James Bottomley
parent d648d5a9a8
commit 1c50e8d26e
1 changed files with 4 additions and 12 deletions
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16
drivers/scsi/mpt2sas/mpt2sas_scsih.c
View file

@ -6753,7 +6753,7 @@ _scsih_search_responding_sas_devices(struct MPT2SAS_ADAPTER *ioc)
handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
break;
handle = le16_to_cpu(sas_device_pg0.DevHandle);
device_info = le32_to_cpu(sas_device_pg0.DeviceInfo);
@ -6862,7 +6862,7 @@ _scsih_search_responding_raid_devices(struct MPT2SAS_ADAPTER *ioc)
&volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
break;
handle = le16_to_cpu(volume_pg1.DevHandle);
@ -6887,7 +6887,7 @@ _scsih_search_responding_raid_devices(struct MPT2SAS_ADAPTER *ioc)
phys_disk_num))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
break;
phys_disk_num = pd_pg0.PhysDiskNum;
handle = le16_to_cpu(pd_pg0.DevHandle);
@ -6967,7 +6967,7 @@ _scsih_search_responding_expanders(struct MPT2SAS_ADAPTER *ioc)
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
if (ioc_status != MPI2_IOCSTATUS_SUCCESS)
break;
handle = le16_to_cpu(expander_pg0.DevHandle);
@ -7109,8 +7109,6 @@ _scsih_scan_for_devices_after_reset(struct MPT2SAS_ADAPTER *ioc)
MPI2_SAS_EXPAND_PGAD_FORM_GET_NEXT_HNDL, handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_INFO_FMT "\tbreak from expander scan: "
"ioc_status(0x%04x), loginfo(0x%08x)\n",
@ -7153,8 +7151,6 @@ _scsih_scan_for_devices_after_reset(struct MPT2SAS_ADAPTER *ioc)
phys_disk_num))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_INFO_FMT "\tbreak from phys disk scan:"
"ioc_status(0x%04x), loginfo(0x%08x)\n",
@ -7219,8 +7215,6 @@ _scsih_scan_for_devices_after_reset(struct MPT2SAS_ADAPTER *ioc)
&volume_pg1, MPI2_RAID_VOLUME_PGAD_FORM_GET_NEXT_HANDLE, handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_INFO_FMT "\tbreak from volume scan: "
"ioc_status(0x%04x), loginfo(0x%08x)\n",
@ -7278,8 +7272,6 @@ _scsih_scan_for_devices_after_reset(struct MPT2SAS_ADAPTER *ioc)
handle))) {
ioc_status = le16_to_cpu(mpi_reply.IOCStatus) &
MPI2_IOCSTATUS_MASK;
if (ioc_status == MPI2_IOCSTATUS_CONFIG_INVALID_PAGE)
break;
if (ioc_status != MPI2_IOCSTATUS_SUCCESS) {
printk(MPT2SAS_INFO_FMT "\tbreak from end device scan:"
" ioc_status(0x%04x), loginfo(0x%08x)\n",