Support hot add of scsi disks.
Signed-off-by: K. Y. Srinivasan <kys@xxxxxxxxxxxxx>
Signed-off-by: Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>
---
drivers/staging/hv/storvsc_drv.c | 38 ++++++++++++++++++++++++++++++++++++++
1 files changed, 38 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c
index 9153641..7c82d14 100644
--- a/drivers/staging/hv/storvsc_drv.c
+++ b/drivers/staging/hv/storvsc_drv.c
@@ -304,6 +304,30 @@ struct storvsc_cmd_request {
struct hv_storvsc_request request;
};
+struct storvsc_scan_work {
+ struct work_struct work;
+ struct Scsi_Host *host;
+ uint lun;
+};
+
+static void storvsc_bus_scan(struct work_struct *work)
+{
+ struct storvsc_scan_work *wrk;
+ int id, order_id;
+
+ wrk = container_of(work, struct storvsc_scan_work, work);
+ for (id = 0; id < wrk->host->max_id; ++id) {
+ if (wrk->host->reverse_ordering)
+ order_id = wrk->host->max_id - id - 1;
+ else
+ order_id = id;
+
+ scsi_scan_target(&wrk->host->shost_gendev, 0,
+ order_id, SCAN_WILD_CARD, 1);
+ }
+ kfree(wrk);
+}
+
static inline struct storvsc_device *get_out_stor_device(
struct hv_device *device)
{
@@ -551,11 +575,25 @@ static void storvsc_on_receive(struct hv_device *device,
struct vstor_packet *vstor_packet,
struct hv_storvsc_request *request)
{
+ struct storvsc_scan_work *work;
+ struct storvsc_device *stor_device;
+
switch (vstor_packet->operation) {
case VSTOR_OPERATION_COMPLETE_IO:
storvsc_on_io_completion(device, vstor_packet, request);
break;
+
case VSTOR_OPERATION_REMOVE_DEVICE:
+ case VSTOR_OPERATION_ENUMERATE_BUS:
+ stor_device = get_in_stor_device(device);
+ work = kmalloc(sizeof(struct storvsc_scan_work), GFP_ATOMIC);
+ if (!work)
+ return;
+
+ INIT_WORK(&work->work, storvsc_bus_scan);
+ work->host = stor_device->host;
+ schedule_work(&work->work);
+ break;
default:
break;
--
1.7.4.1
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