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path: root/drivers/scsi/ibmvscsi/rpa_vscsi.c
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Diffstat (limited to 'drivers/scsi/ibmvscsi/rpa_vscsi.c')
-rw-r--r--drivers/scsi/ibmvscsi/rpa_vscsi.c16
1 files changed, 13 insertions, 3 deletions
diff --git a/drivers/scsi/ibmvscsi/rpa_vscsi.c b/drivers/scsi/ibmvscsi/rpa_vscsi.c
index 989b9a8ba72d..f48ae0190d95 100644
--- a/drivers/scsi/ibmvscsi/rpa_vscsi.c
+++ b/drivers/scsi/ibmvscsi/rpa_vscsi.c
@@ -31,6 +31,7 @@
#include <asm/prom.h>
#include <asm/iommu.h>
#include <asm/hvcall.h>
+#include <linux/delay.h>
#include <linux/dma-mapping.h>
#include <linux/gfp.h>
#include <linux/interrupt.h>
@@ -71,11 +72,13 @@ static void rpavscsi_release_crq_queue(struct crq_queue *queue,
struct ibmvscsi_host_data *hostdata,
int max_requests)
{
- long rc;
+ long rc = 0;
struct vio_dev *vdev = to_vio_dev(hostdata->dev);
free_irq(vdev->irq, (void *)hostdata);
tasklet_kill(&hostdata->srp_task);
do {
+ if (rc)
+ msleep(100);
rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
} while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
dma_unmap_single(hostdata->dev,
@@ -200,11 +203,13 @@ static void set_adapter_info(struct ibmvscsi_host_data *hostdata)
static int rpavscsi_reset_crq_queue(struct crq_queue *queue,
struct ibmvscsi_host_data *hostdata)
{
- int rc;
+ int rc = 0;
struct vio_dev *vdev = to_vio_dev(hostdata->dev);
/* Close the CRQ */
do {
+ if (rc)
+ msleep(100);
rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
} while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
@@ -301,7 +306,10 @@ static int rpavscsi_init_crq_queue(struct crq_queue *queue,
req_irq_failed:
tasklet_kill(&hostdata->srp_task);
+ rc = 0;
do {
+ if (rc)
+ msleep(100);
rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
} while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
reg_crq_failed:
@@ -323,11 +331,13 @@ static int rpavscsi_init_crq_queue(struct crq_queue *queue,
static int rpavscsi_reenable_crq_queue(struct crq_queue *queue,
struct ibmvscsi_host_data *hostdata)
{
- int rc;
+ int rc = 0;
struct vio_dev *vdev = to_vio_dev(hostdata->dev);
/* Re-enable the CRQ */
do {
+ if (rc)
+ msleep(100);
rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
} while ((rc == H_IN_PROGRESS) || (rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));