diff options
Diffstat (limited to 'drivers/fpga/dfl-fme-main.c')
| -rw-r--r-- | drivers/fpga/dfl-fme-main.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/drivers/fpga/dfl-fme-main.c b/drivers/fpga/dfl-fme-main.c index 1d4690c99268..77ea04d4edbe 100644 --- a/drivers/fpga/dfl-fme-main.c +++ b/drivers/fpga/dfl-fme-main.c @@ -580,6 +580,10 @@ static struct dfl_feature_driver fme_feature_drvs[] = { .ops = &fme_power_mgmt_ops, }, { + .id_table = fme_perf_id_table, + .ops = &fme_perf_ops, + }, + { .ops = NULL, }, }; @@ -600,24 +604,35 @@ static int fme_open(struct inode *inode, struct file *filp) if (WARN_ON(!pdata)) return -ENODEV; - ret = dfl_feature_dev_use_begin(pdata); - if (ret) - return ret; - - dev_dbg(&fdev->dev, "Device File Open\n"); - filp->private_data = pdata; + mutex_lock(&pdata->lock); + ret = dfl_feature_dev_use_begin(pdata, filp->f_flags & O_EXCL); + if (!ret) { + dev_dbg(&fdev->dev, "Device File Opened %d Times\n", + dfl_feature_dev_use_count(pdata)); + filp->private_data = pdata; + } + mutex_unlock(&pdata->lock); - return 0; + return ret; } static int fme_release(struct inode *inode, struct file *filp) { struct dfl_feature_platform_data *pdata = filp->private_data; struct platform_device *pdev = pdata->dev; + struct dfl_feature *feature; dev_dbg(&pdev->dev, "Device File Release\n"); + + mutex_lock(&pdata->lock); dfl_feature_dev_use_end(pdata); + if (!dfl_feature_dev_use_count(pdata)) + dfl_fpga_dev_for_each_feature(pdata, feature) + dfl_fpga_set_irq_triggers(feature, 0, + feature->nr_irqs, NULL); + mutex_unlock(&pdata->lock); + return 0; } |