diff options
| author | Tomas Winkler <tomas.winkler@intel.com> | 2014-02-19 19:35:50 +0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-03-01 03:15:57 +0400 |
| commit | b6d81fd66155fb6d0965502e146b136047e428b3 (patch) | |
| tree | 867b6e6e1429f038a3c0670abb43b43f31493810 /drivers | |
| parent | 7ca96aa278f8b9983184e318b06a0ed9ad0297b8 (diff) | |
| download | linux-b6d81fd66155fb6d0965502e146b136047e428b3.tar.xz | |
mei: wd: simplify wd_send command
Add reduce credits to wd_send to remove code
repetition and simplify error handling
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/mei/interrupt.c | 7 | ||||
| -rw-r--r-- | drivers/misc/mei/wd.c | 52 |
2 files changed, 30 insertions, 29 deletions
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c index 31cb3452b9d7..834220af814f 100644 --- a/drivers/misc/mei/interrupt.c +++ b/drivers/misc/mei/interrupt.c @@ -480,10 +480,9 @@ int mei_irq_write_handler(struct mei_device *dev, struct mei_cl_cb *cmpl_list) if (mei_cl_is_connected(&dev->wd_cl)) { if (dev->wd_pending && mei_cl_flow_ctrl_creds(&dev->wd_cl) > 0) { - if (mei_wd_send(dev)) - dev_dbg(&dev->pdev->dev, "wd send failed.\n"); - else if (mei_cl_flow_ctrl_reduce(&dev->wd_cl)) - return -EIO; + ret = mei_wd_send(dev); + if (ret) + return ret; dev->wd_pending = false; } } diff --git a/drivers/misc/mei/wd.c b/drivers/misc/mei/wd.c index 4644b62e9055..13bb7a91ae12 100644 --- a/drivers/misc/mei/wd.c +++ b/drivers/misc/mei/wd.c @@ -111,13 +111,16 @@ int mei_wd_host_init(struct mei_device *dev) * returns 0 if success, * -EIO when message send fails * -EINVAL when invalid message is to be sent + * -ENODEV on flow control failure */ int mei_wd_send(struct mei_device *dev) { + struct mei_cl *cl = &dev->wd_cl; struct mei_msg_hdr hdr; + int ret; - hdr.host_addr = dev->wd_cl.host_client_id; - hdr.me_addr = dev->wd_cl.me_client_id; + hdr.host_addr = cl->host_client_id; + hdr.me_addr = cl->me_client_id; hdr.msg_complete = 1; hdr.reserved = 0; hdr.internal = 0; @@ -126,10 +129,24 @@ int mei_wd_send(struct mei_device *dev) hdr.length = MEI_WD_START_MSG_SIZE; else if (!memcmp(dev->wd_data, mei_stop_wd_params, MEI_WD_HDR_SIZE)) hdr.length = MEI_WD_STOP_MSG_SIZE; - else + else { + dev_err(&dev->pdev->dev, "wd: invalid message is to be sent, aborting\n"); return -EINVAL; + } + + ret = mei_write_message(dev, &hdr, dev->wd_data); + if (ret) { + dev_err(&dev->pdev->dev, "wd: write message failed\n"); + return ret; + } - return mei_write_message(dev, &hdr, dev->wd_data); + ret = mei_cl_flow_ctrl_reduce(cl); + if (ret) { + dev_err(&dev->pdev->dev, "wd: flow_ctrl_reduce failed.\n"); + return ret; + } + + return 0; } /** @@ -159,16 +176,9 @@ int mei_wd_stop(struct mei_device *dev) goto out; if (ret && mei_hbuf_acquire(dev)) { - ret = 0; - - if (!mei_wd_send(dev)) { - ret = mei_cl_flow_ctrl_reduce(&dev->wd_cl); - if (ret) - goto out; - } else { - dev_err(&dev->pdev->dev, "wd: send stop failed\n"); - } - + ret = mei_wd_send(dev); + if (ret) + goto out; dev->wd_pending = false; } else { dev->wd_pending = true; @@ -289,18 +299,10 @@ static int mei_wd_ops_ping(struct watchdog_device *wd_dev) dev_dbg(&dev->pdev->dev, "wd: sending ping\n"); - if (mei_wd_send(dev)) { - dev_err(&dev->pdev->dev, "wd: send failed.\n"); - ret = -EIO; + ret = mei_wd_send(dev); + if (ret) goto end; - } - - if (mei_cl_flow_ctrl_reduce(&dev->wd_cl)) { - dev_err(&dev->pdev->dev, "wd: mei_cl_flow_ctrl_reduce() failed.\n"); - ret = -EIO; - goto end; - } - + dev->wd_pending = false; } else { dev->wd_pending = true; } |