Now that the default framing protocol is factored out into its own driver, switch over to using the driver for writing data.
Signed-off-by: Alexander Shishkin <[email protected]> --- drivers/hwtracing/stm/core.c | 27 ++++++++++++++------------- 1 file changed, 14 insertions(+), 13 deletions(-) diff --git a/drivers/hwtracing/stm/core.c b/drivers/hwtracing/stm/core.c index 9ed2f06deb47..fb224574b3db 100644 --- a/drivers/hwtracing/stm/core.c +++ b/drivers/hwtracing/stm/core.c @@ -598,17 +598,21 @@ ssize_t notrace stm_data_write(struct stm_data *data, unsigned int m, } EXPORT_SYMBOL_GPL(stm_data_write); -static ssize_t notrace stm_write(struct stm_data *data, unsigned int master, - unsigned int channel, const char *buf, size_t count) +static ssize_t notrace +stm_write(struct stm_device *stm, struct stm_output *output, + unsigned int chan, const char *buf, size_t count) { - ssize_t sz; + int err; + + /* stm->pdrv is serialized against policy_mutex */ + if (!stm->pdrv) + return -ENODEV; - sz = stm_data_write(data, master, channel, true, buf, count); - if (sz > 0) - data->packet(data, master, channel, STP_PACKET_FLAG, 0, 0, - buf); + err = stm->pdrv->write(stm->data, output, chan, buf, count); + if (err < 0) + return err; - return sz; + return err; } static ssize_t stm_char_write(struct file *file, const char __user *buf, @@ -655,8 +659,7 @@ static ssize_t stm_char_write(struct file *file, const char __user *buf, pm_runtime_get_sync(&stm->dev); - count = stm_write(stm->data, stmf->output.master, stmf->output.channel, - kbuf, count); + count = stm_write(stm, &stmf->output, 0, kbuf, count); pm_runtime_mark_last_busy(&stm->dev); pm_runtime_put_autosuspend(&stm->dev); @@ -1306,9 +1309,7 @@ int notrace stm_source_write(struct stm_source_data *data, stm = srcu_dereference(src->link, &stm_source_srcu); if (stm) - count = stm_write(stm->data, src->output.master, - src->output.channel + chan, - buf, count); + count = stm_write(stm, &src->output, chan, buf, count); else count = -ENODEV; -- 2.18.0
