From 126757998a50659f79a3f1ff23fccfc40ff1bf5c Mon Sep 17 00:00:00 2001 From: "K. Y. Srinivasan" Date: Tue, 8 Nov 2011 09:01:49 -0800 Subject: [PATCH] Staging: hv: storvsc: Support hot add of scsi disks Support hot add of scsi disks. Signed-off-by: K. Y. Srinivasan Signed-off-by: Haiyang Zhang Signed-off-by: Greg Kroah-Hartman --- drivers/staging/hv/storvsc_drv.c | 38 ++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c index 9153641f7946..7c82d148f32e 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; -- 2.39.5