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path: root/drivers/scsi/libsas/sas_host_smp.c
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Diffstat (limited to 'drivers/scsi/libsas/sas_host_smp.c')
-rw-r--r--drivers/scsi/libsas/sas_host_smp.c38
1 files changed, 20 insertions, 18 deletions
diff --git a/drivers/scsi/libsas/sas_host_smp.c b/drivers/scsi/libsas/sas_host_smp.c
index d110a366c48a..89952edd0be3 100644
--- a/drivers/scsi/libsas/sas_host_smp.c
+++ b/drivers/scsi/libsas/sas_host_smp.c
@@ -134,7 +134,7 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
{
u8 *req_data = NULL, *resp_data = NULL, *buf;
struct sas_ha_struct *sas_ha = SHOST_TO_SAS_HA(shost);
- int error = -EINVAL, resp_data_len = rsp->data_len;
+ int error = -EINVAL;
/* eight is the minimum size for request and response frames */
if (req->data_len < 8 || rsp->data_len < 8)
@@ -176,17 +176,20 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
resp_data[1] = req_data[1];
resp_data[2] = SMP_RESP_FUNC_UNK;
+ req->resid_len = req->data_len;
+ rsp->resid_len = rsp->data_len;
+
switch (req_data[1]) {
case SMP_REPORT_GENERAL:
- req->data_len -= 8;
- resp_data_len -= 32;
+ req->resid_len -= 8;
+ rsp->resid_len -= 32;
resp_data[2] = SMP_RESP_FUNC_ACC;
resp_data[9] = sas_ha->num_phys;
break;
case SMP_REPORT_MANUF_INFO:
- req->data_len -= 8;
- resp_data_len -= 64;
+ req->resid_len -= 8;
+ rsp->resid_len -= 64;
resp_data[2] = SMP_RESP_FUNC_ACC;
memcpy(resp_data + 12, shost->hostt->name,
SAS_EXPANDER_VENDOR_ID_LEN);
@@ -199,13 +202,13 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
break;
case SMP_DISCOVER:
- req->data_len -= 16;
- if ((int)req->data_len < 0) {
- req->data_len = 0;
+ req->resid_len -= 16;
+ if ((int)req->resid_len < 0) {
+ req->resid_len = 0;
error = -EINVAL;
goto out;
}
- resp_data_len -= 56;
+ rsp->resid_len -= 56;
sas_host_smp_discover(sas_ha, resp_data, req_data[9]);
break;
@@ -215,13 +218,13 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
break;
case SMP_REPORT_PHY_SATA:
- req->data_len -= 16;
- if ((int)req->data_len < 0) {
- req->data_len = 0;
+ req->resid_len -= 16;
+ if ((int)req->resid_len < 0) {
+ req->resid_len = 0;
error = -EINVAL;
goto out;
}
- resp_data_len -= 60;
+ rsp->resid_len -= 60;
sas_report_phy_sata(sas_ha, resp_data, req_data[9]);
break;
@@ -238,13 +241,13 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
break;
case SMP_PHY_CONTROL:
- req->data_len -= 44;
- if ((int)req->data_len < 0) {
- req->data_len = 0;
+ req->resid_len -= 44;
+ if ((int)req->resid_len < 0) {
+ req->resid_len = 0;
error = -EINVAL;
goto out;
}
- resp_data_len -= 8;
+ rsp->resid_len -= 8;
sas_phy_control(sas_ha, req_data[9], req_data[10],
req_data[32] >> 4, req_data[33] >> 4,
resp_data);
@@ -265,7 +268,6 @@ int sas_smp_host_handler(struct Scsi_Host *shost, struct request *req,
flush_kernel_dcache_page(bio_page(rsp->bio));
kunmap_atomic(buf - bio_offset(rsp->bio), KM_USER0);
local_irq_enable();
- rsp->data_len = resp_data_len;
out:
kfree(req_data);