Don't send final packet if length is zero
git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@1093 7fd9a85b-ad96-42d3-883c-3090e2eb8679
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@ -714,7 +714,7 @@ static int inline usbstrg_cmdmodesense6(FAR struct usbstrg_dev_s *priv,
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*
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* (1) A MODESENSE6-specific mode parameter header,
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* (2) A variable length list of block descriptors, and
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* (3) A variable lengtth list of mode page formats
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* (3) A variable length list of mode page formats
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*/
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mph->type = 0; /* Medium type */
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@ -1743,7 +1743,7 @@ static int usbstrg_cmdparsestate(FAR struct usbstrg_dev_s *priv)
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break;
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/* * 0x20-22 Vendor specific */
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case SCSI_CMD_READFORMATCAPACITIES: /* 0x23 Vendor-specific */
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case SCSI_CMD_READFORMATCAPACITIES: /* 0x23 Vendor-specific (defined in MMC spec) */
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ret = usbstrg_cmdreadformatcapacity(priv, buf);
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break;
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/* * 0x24 Vendor specific */
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@ -2262,29 +2262,36 @@ static int usbstrg_cmdfinishstate(FAR struct usbstrg_dev_s *priv)
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case USBSTRG_FLAGS_DIRDEVICE2HOST:
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if (priv->cbwlen > 0)
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{
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struct usbdev_req_s *req;
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/* Take a request from the wrreqlist (we've already checked
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* that is it not NULL)
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/* On most commands (the exception is outgoing, write commands),
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* the data has not not yet been sent.
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*/
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flags = irqsave();
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privreq = (FAR struct usbstrg_req_s *)sq_remfirst(&priv->wrreqlist);
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irqrestore(flags);
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/* Send the write request */
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req = privreq->req;
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req->len = priv->nreqbytes;
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req->callback = usbstrg_wrcomplete;
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req->private = privreq;
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req->flags = USBDEV_REQFLAGS_NULLPKT;
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ret = EP_SUBMIT(priv->epbulkin, privreq->req);
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if (ret < 0)
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if (priv->nreqbytes > 0)
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{
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usbtrace(TRACE_CLSERROR(USBSTRG_TRACEERR_CMDFINISHSUBMIT), (uint16)-ret);
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}
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struct usbdev_req_s *req;
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/* Take a request from the wrreqlist (we've already checked
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* that is it not NULL)
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*/
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flags = irqsave();
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privreq = (FAR struct usbstrg_req_s *)sq_remfirst(&priv->wrreqlist);
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irqrestore(flags);
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/* Send the write request */
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req = privreq->req;
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req->len = priv->nreqbytes;
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req->callback = usbstrg_wrcomplete;
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req->private = privreq;
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req->flags = USBDEV_REQFLAGS_NULLPKT;
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ret = EP_SUBMIT(priv->epbulkin, privreq->req);
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if (ret < 0)
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{
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usbtrace(TRACE_CLSERROR(USBSTRG_TRACEERR_CMDFINISHSUBMIT), (uint16)-ret);
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}
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}
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/* Stall the BULK In endpoint if there is a residue */
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