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haven: dbl: Initialize cap ids to HH_CAPID_INVAL

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Currently, the cap-ids for doorbells are initialized to 0. However, 0 is
a valid value for cap-id. Instead, initialize cap-ids to HH_CAPID_INVAL
in the doorbell driver.

Change-Id: Ia1588ed372f0657444e1ab39eab9e6c1e6d3d156
Signed-off-by: Elliot Berman <[email protected]>
This commit is contained in:
Elliot Berman 2020-04-23 13:57:41 -07:00
commit 90bc10978d
1 changed files with 4 additions and 2 deletions
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6
drivers/virt/haven/hh_dbl.c
View file

@ -67,7 +67,7 @@ static int hh_dbl_validate_params(struct hh_dbl_desc *client_desc,
* There are no doorbell setup for Tx or Rx
*/
if (dir == HH_DBL_DIRECTION_RX) {
if (!cap_table_entry->rx_cap_id ||
if ((cap_table_entry->rx_cap_id == HH_CAPID_INVAL) ||
!cap_table_entry->rx_reg_done) {
pr_err("%s: label: %d; rx_cap_id: %llu; dir: %d rx_done: %d\n",
__func__, client_desc->label,
@ -76,7 +76,7 @@ static int hh_dbl_validate_params(struct hh_dbl_desc *client_desc,
return -EAGAIN;
}
} else {
if (!cap_table_entry->tx_cap_id ||
if ((cap_table_entry->tx_cap_id == HH_CAPID_INVAL) ||
!cap_table_entry->tx_reg_done) {
pr_err("%s: label: %d; tx_cap_id: %llu; dir: %d tx_done: %d\n",
__func__, client_desc->label,
@ -575,6 +575,8 @@ static int __init hh_dbl_init(void)
for (i = 0; i < HH_DBL_LABEL_MAX; i++) {
entry = &hh_dbl_cap_table[i];
mutex_init(&entry->cap_entry_lock);
entry->tx_cap_id = HH_CAPID_INVAL;
entry->rx_cap_id = HH_CAPID_INVAL;
entry->rx_irq_name = kasprintf(GFP_KERNEL, "hh_dbl_rx_%d", i);
if (!entry->rx_irq_name) {
ret = -ENOMEM;