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| author | Dan Williams <dan.j.williams@intel.com> | 2011-07-29 17:16:40 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-08-23 19:45:45 -0700 |
| commit | 1a878284473284f9577d44babf16d87152a05c33 (patch) | |
| tree | f42d2433f56f10ad1a9b12b4f1479db2be7ef579 /drivers/scsi/isci | |
| parent | ba8f318471f66d5d5b79da68112525cf432b2b18 (diff) | |
| download | lwn-1a878284473284f9577d44babf16d87152a05c33.tar.gz lwn-1a878284473284f9577d44babf16d87152a05c33.zip | |
[SCSI] isci: fix sata response handling
A bug (likely copy/paste) that has been carried from the original
implementation. The unsolicited frame handling structure returns the
d2h fis in the isci_request.stp.rsp buffer.
Cc: <stable@kernel.org>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/isci')
| -rw-r--r-- | drivers/scsi/isci/request.c | 18 |
1 files changed, 6 insertions, 12 deletions
diff --git a/drivers/scsi/isci/request.c b/drivers/scsi/isci/request.c index a46e07ac789f..b4cf998385b3 100644 --- a/drivers/scsi/isci/request.c +++ b/drivers/scsi/isci/request.c @@ -2399,22 +2399,19 @@ static void isci_task_save_for_upper_layer_completion( } } -static void isci_request_process_stp_response(struct sas_task *task, - void *response_buffer) +static void isci_process_stp_response(struct sas_task *task, struct dev_to_host_fis *fis) { - struct dev_to_host_fis *d2h_reg_fis = response_buffer; struct task_status_struct *ts = &task->task_status; struct ata_task_resp *resp = (void *)&ts->buf[0]; - resp->frame_len = le16_to_cpu(*(__le16 *)(response_buffer + 6)); - memcpy(&resp->ending_fis[0], response_buffer + 16, 24); + resp->frame_len = sizeof(*fis); + memcpy(resp->ending_fis, fis, sizeof(*fis)); ts->buf_valid_size = sizeof(*resp); - /** - * If the device fault bit is set in the status register, then + /* If the device fault bit is set in the status register, then * set the sense data and return. */ - if (d2h_reg_fis->status & ATA_DF) + if (fis->status & ATA_DF) ts->stat = SAS_PROTO_RESPONSE; else ts->stat = SAM_STAT_GOOD; @@ -2428,7 +2425,6 @@ static void isci_request_io_request_complete(struct isci_host *ihost, { struct sas_task *task = isci_request_access_task(request); struct ssp_response_iu *resp_iu; - void *resp_buf; unsigned long task_flags; struct isci_remote_device *idev = isci_lookup_device(task->dev); enum service_response response = SAS_TASK_UNDELIVERED; @@ -2565,9 +2561,7 @@ static void isci_request_io_request_complete(struct isci_host *ihost, task); if (sas_protocol_ata(task->task_proto)) { - resp_buf = &request->stp.rsp; - isci_request_process_stp_response(task, - resp_buf); + isci_process_stp_response(task, &request->stp.rsp); } else if (SAS_PROTOCOL_SSP == task->task_proto) { /* crack the iu response buffer. */ |