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usb-storage: drop tag from device state. 

scsi keeps track of the tag in SCSIRequest,
no need to store a separate copy.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
master
Gerd Hoffmann 2011-11-21 11:36:17 +01:00
parent 92a114f6f8
commit 7b863f41de
1 changed files with 6 additions and 7 deletions
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13
hw/usb-msd.c
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@ -52,7 +52,6 @@ typedef struct {
uint8_t *scsi_buf;
uint32_t data_len;
uint32_t residue;
uint32_t tag;
struct usb_msd_csw csw;
SCSIRequest *req;
SCSIBus bus;
@ -230,12 +229,12 @@ static void usb_msd_command_complete(SCSIRequest *req, uint32_t status)
MSDState *s = DO_UPCAST(MSDState, dev.qdev, req->bus->qbus.parent);
USBPacket *p = s->packet;
DPRINTF("Command complete %d\n", status);
DPRINTF("Command complete %d tag 0x%x\n", status, req->tag);
s->residue = s->data_len;
s->result = status != 0;
s->csw.sig = cpu_to_le32(0x53425355);
s->csw.tag = cpu_to_le32(s->tag);
s->csw.tag = cpu_to_le32(req->tag);
s->csw.residue = s->residue;
s->csw.status = s->result;
@ -260,7 +259,6 @@ static void usb_msd_command_complete(SCSIRequest *req, uint32_t status)
} else if (s->data_len == 0) {
s->mode = USB_MSDM_CSW;
}
scsi_req_unref(req);
s->req = NULL;
}
@ -340,6 +338,7 @@ static void usb_msd_cancel_io(USBDevice *dev, USBPacket *p)
static int usb_msd_handle_data(USBDevice *dev, USBPacket *p)
{
MSDState *s = (MSDState *)dev;
uint32_t tag;
int ret = 0;
struct usb_msd_cbw cbw;
uint8_t devep = p->devep;
@ -366,7 +365,7 @@ static int usb_msd_handle_data(USBDevice *dev, USBPacket *p)
fprintf(stderr, "usb-msd: Bad LUN %d\n", cbw.lun);
goto fail;
}
s->tag = le32_to_cpu(cbw.tag);
tag = le32_to_cpu(cbw.tag);
s->data_len = le32_to_cpu(cbw.data_len);
if (s->data_len == 0) {
s->mode = USB_MSDM_CSW;
@ -376,10 +375,10 @@ static int usb_msd_handle_data(USBDevice *dev, USBPacket *p)
s->mode = USB_MSDM_DATAOUT;
}
DPRINTF("Command tag 0x%x flags %08x len %d data %d\n",
s->tag, cbw.flags, cbw.cmd_len, s->data_len);
tag, cbw.flags, cbw.cmd_len, s->data_len);
s->residue = 0;
s->scsi_len = 0;
s->req = scsi_req_new(s->scsi_dev, s->tag, 0, cbw.cmd, NULL);
s->req = scsi_req_new(s->scsi_dev, tag, 0, cbw.cmd, NULL);
scsi_req_enqueue(s->req);
/* ??? Should check that USB and SCSI data transfer
directions match. */