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msm: mhi_dev: Update comments and log in mhi_dev_process_ring

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Update the logs and comments in mhi_dev_process_ring.

Change-Id: Ia082911edeb79293d33f82a5001ce99eee4e746d
Signed-off-by: Veerabhadrarao Badiganti <quic_vbadigan@quicinc.com>
This commit is contained in:
Veerabhadrarao Badiganti 2022-02-10 19:27:28 +05:30
commit 866af57747
1 changed files with 20 additions and 19 deletions
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45
drivers/platform/msm/mhi_dev/mhi_ring.c
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@ -192,9 +192,12 @@ int mhi_dev_process_ring_element(struct mhi_dev_ring *ring, size_t offset)
/* get the element and invoke the respective callback */
el = &ring->ring_cache[offset];
mhi_log(MHI_MSG_VERBOSE, "evnt ptr : 0x%llx\n", el->tre.data_buf_ptr);
mhi_log(MHI_MSG_VERBOSE, "evnt len : 0x%x, offset:%lu\n",
if (ring->type == RING_TYPE_CH) {
mhi_log(MHI_MSG_VERBOSE, "TRE data buff ptr : 0x%llx\n",
el->tre.data_buf_ptr);
mhi_log(MHI_MSG_VERBOSE, "TRE len : 0x%x, rd_offset:%lu\n",
el->tre.len, offset);
}
if (ring->ring_cb)
return ring->ring_cb(ring->mhi_dev, el, (void *)ring);
@ -209,13 +212,12 @@ EXPORT_SYMBOL(mhi_dev_process_ring_element);
int mhi_dev_process_ring(struct mhi_dev_ring *ring)
{
int rc = 0;
union mhi_dev_ring_element_type *el;
if (WARN_ON(!ring))
return -EINVAL;
mhi_log(MHI_MSG_VERBOSE,
"Before wr update ring_id (%d) element (%lu) with wr:%lu\n",
"Before wr update ring_id (%d) rp:%lu wp:%lu\n",
ring->id, ring->rd_offset, ring->wr_offset);
rc = mhi_dev_update_wr_offset(ring);
@ -226,37 +228,36 @@ int mhi_dev_process_ring(struct mhi_dev_ring *ring)
return rc;
}
/* get the element and invoke the respective callback */
el = &ring->ring_cache[ring->wr_offset];
mhi_log(MHI_MSG_VERBOSE, "evnt ptr : 0x%llx\n", el->tre.data_buf_ptr);
mhi_log(MHI_MSG_VERBOSE, "evnt len : 0x%x, wr_offset:%lu\n",
el->tre.len, ring->wr_offset);
mhi_log(MHI_MSG_VERBOSE,
"After wp update ring_id (%d) rp:%lu with wr:%lu\n",
ring->id, ring->rd_offset, ring->wr_offset);
/*
* Notify the clients that there are elements in the ring.
* For channels, simply notify client for the first element (no need to
* notify for all the elements) and return (no need to update rd
* pointer). When client consumes the elements, rp will be updated.
*/
if (ring->type == RING_TYPE_CH) {
/* notify the clients that there are elements in the ring */
rc = mhi_dev_process_ring_element(ring, ring->rd_offset);
if (rc)
pr_err("Error fetching elements\n");
return rc;
}
mhi_log(MHI_MSG_VERBOSE,
"After ring update ring_id (%d) element (%lu) with wr:%lu\n",
ring->id, ring->rd_offset, ring->wr_offset);
while (ring->rd_offset != ring->wr_offset) {
rc = mhi_dev_process_ring_element(ring, ring->rd_offset);
if (rc) {
mhi_log(MHI_MSG_ERROR,
"Error processing ring (%d) element (%lu)\n",
ring->id, ring->rd_offset);
return rc;
}
mhi_log(MHI_MSG_VERBOSE,
"Processing ring (%d) rd_offset:%lu, wr_offset:%lu\n",
ring->id, ring->rd_offset, ring->wr_offset);
rc = mhi_dev_process_ring_element(ring, ring->rd_offset);
if (rc) {
mhi_log(MHI_MSG_ERROR,
"Error processing ring (%d) element(rp) (%lu)\n",
ring->id, ring->rd_offset);
return rc;
}
mhi_dev_ring_inc_index(ring, ring->rd_offset);
}