[SCSI] mpt2sas: Target Reset will be issued from Interrupt context.
(1) Added three new functions to handle sending target resest and OP_REMOVE
from interrupt time, they are _scsih_tm_tr_send, _scsih_tm_tr_complete, and
_scsih_sas_control_complete. This code will create a link list of pending
target resets if there is no more available request in the hipriority
request queue. The list is stored in ioc->delayed_tr_list.
(2) All callback handler return type is changed from void to u8.
Now _base_interrupt will check for return type of callback handlers to
take decision of message frame is already freed or not.
In genral,
Return 1 meaning mf should be freed from _base_interrupt
0 means the mf is freed from function.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/scsi/mpt2sas/mpt2sas_config.c b/drivers/scsi/mpt2sas/mpt2sas_config.c
index d79a4dd..594a389 100644
--- a/drivers/scsi/mpt2sas/mpt2sas_config.c
+++ b/drivers/scsi/mpt2sas/mpt2sas_config.c
@@ -233,18 +233,19 @@
*
* The callback handler when using _config_request.
*
- * Return nothing.
+ * Return 1 meaning mf should be freed from _base_interrupt
+ * 0 means the mf is freed from this function.
*/
-void
+u8
mpt2sas_config_done(struct MPT2SAS_ADAPTER *ioc, u16 smid, u8 msix_index,
u32 reply)
{
MPI2DefaultReply_t *mpi_reply;
if (ioc->config_cmds.status == MPT2_CMD_NOT_USED)
- return;
+ return 1;
if (ioc->config_cmds.smid != smid)
- return;
+ return 1;
ioc->config_cmds.status |= MPT2_CMD_COMPLETE;
mpi_reply = mpt2sas_base_get_reply_virt_addr(ioc, reply);
if (mpi_reply) {
@@ -258,6 +259,7 @@
#endif
ioc->config_cmds.smid = USHORT_MAX;
complete(&ioc->config_cmds.done);
+ return 1;
}
/**