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| author | K. Y. Srinivasan <kys@microsoft.com> | 2011-09-13 17:59:48 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-09-16 18:06:03 (GMT) |
| commit | cd654ea1cc72aed95e871971d87c4a988924fdda (patch) | |
| tree | f618c727695df392165a5f795fd283eb3bf13f01 /drivers/staging/hv | |
| parent | f810d592a29314ade8cce29f8dac858c90a50409 (diff) | |
| download | linux-fsl-qoriq-cd654ea1cc72aed95e871971d87c4a988924fdda.tar.xz | |
Staging: hv: storvsc: Eliminate the usage of ext field in struct hv_device
Now, eliminate the usage of ext field in struct hv_device for storvsc driver.
We do this by registering pointer to struct storvsc_device as the driver
specific data and eliminating the current usage of driver specific data to
save and retrieve the pointer to struct Scsi_Host.
Additionally, all access to the driver specific data is through
the vmbus wrapper functions. Note that function to allocate the host
gives us a reference on the host object.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/staging/hv')
| -rw-r--r-- | drivers/staging/hv/storvsc_drv.c | 20 |
1 files changed, 10 insertions, 10 deletions
diff --git a/drivers/staging/hv/storvsc_drv.c b/drivers/staging/hv/storvsc_drv.c index 5e306a5..807c94d 100644 --- a/drivers/staging/hv/storvsc_drv.c +++ b/drivers/staging/hv/storvsc_drv.c @@ -266,6 +266,7 @@ struct storvsc_device { bool destroy; bool drain_notify; atomic_t num_outstanding_req; + struct Scsi_Host *host; wait_queue_head_t waiting_to_drain; @@ -306,7 +307,7 @@ static inline struct storvsc_device *get_out_stor_device( { struct storvsc_device *stor_device; - stor_device = (struct storvsc_device *)device->ext; + stor_device = hv_get_drvdata(device); if (stor_device && stor_device->destroy) stor_device = NULL; @@ -328,7 +329,7 @@ static inline struct storvsc_device *get_in_stor_device( { struct storvsc_device *stor_device; - stor_device = (struct storvsc_device *)device->ext; + stor_device = hv_get_drvdata(device); if (!stor_device) goto get_in_err; @@ -480,8 +481,7 @@ static void storvsc_on_io_completion(struct hv_device *device, struct storvsc_device *stor_device; struct vstor_packet *stor_pkt; - stor_device = (struct storvsc_device *)device->ext; - + stor_device = hv_get_drvdata(device); stor_pkt = &request->vstor_packet; /* @@ -630,7 +630,7 @@ static int storvsc_dev_remove(struct hv_device *device) struct storvsc_device *stor_device; unsigned long flags; - stor_device = (struct storvsc_device *)device->ext; + stor_device = hv_get_drvdata(device); spin_lock_irqsave(&device->channel->inbound_lock, flags); stor_device->destroy = true; @@ -652,7 +652,7 @@ static int storvsc_dev_remove(struct hv_device *device) * allow incoming packets. */ spin_lock_irqsave(&device->channel->inbound_lock, flags); - device->ext = NULL; + hv_set_drvdata(device, NULL); spin_unlock_irqrestore(&device->channel->inbound_lock, flags); /* Close the channel */ @@ -962,7 +962,8 @@ static unsigned int copy_to_bounce_buffer(struct scatterlist *orig_sgl, static int storvsc_remove(struct hv_device *dev) { - struct Scsi_Host *host = dev_get_drvdata(&dev->device); + struct storvsc_device *stor_device = hv_get_drvdata(dev); + struct Scsi_Host *host = stor_device->host; struct hv_host_device *host_dev = (struct hv_host_device *)host->hostdata; @@ -1338,8 +1339,6 @@ static int storvsc_probe(struct hv_device *device, if (!host) return -ENOMEM; - dev_set_drvdata(&device->device, host); - host_dev = (struct hv_host_device *)host->hostdata; memset(host_dev, 0, sizeof(struct hv_host_device)); @@ -1366,7 +1365,8 @@ static int storvsc_probe(struct hv_device *device, stor_device->destroy = false; init_waitqueue_head(&stor_device->waiting_to_drain); stor_device->device = device; - device->ext = stor_device; + stor_device->host = host; + hv_set_drvdata(device, stor_device); stor_device->port_number = host->host_no; ret = storvsc_connect_to_vsp(device, storvsc_ringbuffer_size); |