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| author | Andreas Herrmann <aherrman@de.ibm.com> | 2005-06-13 13:18:56 +0200 |
|---|---|---|
| committer | James Bottomley <jejb@mulgrave.(none)> | 2005-06-13 21:30:05 -0500 |
| commit | 64b29a130901d5b8578e9f602cf2dae56aaff224 (patch) | |
| tree | fb543d8a7c007416d99128246d4e71580ecd94ff /drivers/s390/scsi/zfcp_fsf.c | |
| parent | 516a4201bacfd61ea957039d6f47276ee9c32a0d (diff) | |
| download | blackbird-op-linux-64b29a130901d5b8578e9f602cf2dae56aaff224.tar.gz blackbird-op-linux-64b29a130901d5b8578e9f602cf2dae56aaff224.zip | |
[SCSI] zfcp: fix: problem in send_els_handler when D_ID assignment changes
From: Maxim Shchetynin <maxim@de.ibm.com>
Fixes a bug in zfcp_send_els_handler. If D_ID assignments for ports
are changing between initiation of one ELS request and its completion
the wrong port might be accessed in the completion for that ELS
request. Thus a pointer to the port has to be passed for ELS requests
to identify the port structure if required.
Signed-off-by: Andreas Herrmann <aherrman@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'drivers/s390/scsi/zfcp_fsf.c')
| -rw-r--r-- | drivers/s390/scsi/zfcp_fsf.c | 15 |
1 files changed, 4 insertions, 11 deletions
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c index bf66fc6d8a97..21a6d7633475 100644 --- a/drivers/s390/scsi/zfcp_fsf.c +++ b/drivers/s390/scsi/zfcp_fsf.c @@ -1771,8 +1771,8 @@ zfcp_fsf_send_els(struct zfcp_send_els *els) static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) { struct zfcp_adapter *adapter; - fc_id_t d_id; struct zfcp_port *port; + fc_id_t d_id; struct fsf_qtcb_header *header; struct fsf_qtcb_bottom_support *bottom; struct zfcp_send_els *send_els; @@ -1781,6 +1781,7 @@ static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) send_els = fsf_req->data.send_els; adapter = send_els->adapter; + port = send_els->port; d_id = send_els->d_id; header = &fsf_req->qtcb->header; bottom = &fsf_req->qtcb->bottom.support; @@ -1817,13 +1818,8 @@ static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) switch (header->fsf_status_qual.word[0]){ case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE: debug_text_event(adapter->erp_dbf, 1, "fsf_sq_ltest"); - if (send_els->ls_code != ZFCP_LS_ADISC) { - read_lock(&zfcp_data.config_lock); - port = zfcp_get_port_by_did(adapter, d_id); - if (port) - zfcp_test_link(port); - read_unlock(&zfcp_data.config_lock); - } + if (port && (send_els->ls_code != ZFCP_LS_ADISC)) + zfcp_test_link(port); fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED: @@ -1913,11 +1909,8 @@ static int zfcp_fsf_send_els_handler(struct zfcp_fsf_req *fsf_req) } } debug_text_event(adapter->erp_dbf, 1, "fsf_s_access"); - read_lock(&zfcp_data.config_lock); - port = zfcp_get_port_by_did(adapter, d_id); if (port != NULL) zfcp_erp_port_access_denied(port); - read_unlock(&zfcp_data.config_lock); fsf_req->status |= ZFCP_STATUS_FSFREQ_ERROR; break; |
