Piteball/android_kernel_samsung_msm8976
1
1
Fork 0
mirror of https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git synced 2024-11-01 10:33:27 +00:00
Code Issues Projects Releases Wiki Activity

[SCSI] zfcp: Use status_read_buf_num provided by FCP channel

Browse source 
The FCP channel provides the number of status read buffers to issue.
Use the provided number instead of the hardcoded number in zfcp.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Christof Schmitt 2010-04-30 18:09:36 +02:00 committed by James Bottomley
parent 6b9e152009
commit 64deb6efdc
5 changed files with 6 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
drivers/s390/scsi/zfcp_aux.c
View file

@ -425,7 +425,8 @@ int zfcp_status_read_refill(struct zfcp_adapter *adapter)
{
while (atomic_read(&adapter->stat_miss) > 0)
if (zfcp_fsf_status_read(adapter->qdio)) {
if (atomic_read(&adapter->stat_miss) >= 16) {
if (atomic_read(&adapter->stat_miss) >=
adapter->stat_read_buf_num) {
zfcp_erp_adapter_reopen(adapter, 0, "axsref1",
NULL);
return 1;

1
drivers/s390/scsi/zfcp_def.h
View file

@ -164,6 +164,7 @@ struct zfcp_adapter {
stack abort/command
completion races */
atomic_t stat_miss; /* # missing status reads*/
unsigned int stat_read_buf_num;
struct work_struct stat_work;
atomic_t status; /* status of this adapter */
struct list_head erp_ready_head; /* error recovery for this

2
drivers/s390/scsi/zfcp_erp.c
View file

@ -714,7 +714,7 @@ static int zfcp_erp_adapter_strategy_open_fsf(struct zfcp_erp_action *act)
if (zfcp_erp_adapter_strategy_open_fsf_xport(act) == ZFCP_ERP_FAILED)
return ZFCP_ERP_FAILED;
atomic_set(&act->adapter->stat_miss, 16);
atomic_set(&act->adapter->stat_miss, act->adapter->stat_read_buf_num);
if (zfcp_status_read_refill(act->adapter))
return ZFCP_ERP_FAILED;

1
drivers/s390/scsi/zfcp_fsf.c
View file

@ -496,6 +496,7 @@ static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
adapter->hydra_version = bottom->adapter_type;
adapter->timer_ticks = bottom->timer_interval;
adapter->stat_read_buf_num = max(bottom->status_read_buf_num, (u16)16);
if (fc_host_permanent_port_name(shost) == -1)
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);

2
drivers/s390/scsi/zfcp_fsf.h
View file

@ -366,7 +366,7 @@ struct fsf_qtcb_bottom_config {
u32 adapter_type;
u8 res0;
u8 peer_d_id[3];
u8 res1[2];
u16 status_read_buf_num;
u16 timer_interval;
u8 res2[9];
u8 s_id[3];