[PATCH 084/379][SRU][OEM-5.6] ath11k: cleanup reo command error code overwritten

[You-Sheng Yang]

From: Govindaraj Saminathan <gsamin at codeaurora.org>

BugLink: https://bugs.launchpad.net/bugs/1879633

should not overwrite the error code. No buffer available then return
invalid. For other failures return the error code of actual failure.

Signed-off-by: Govindaraj Saminathan <gsamin at codeaurora.org>
Signed-off-by: Kalle Valo <kvalo at codeaurora.org>
Link: https://lore.kernel.org/r/1586776872-25766-1-git-send-email-gsamin@codeaurora.org
(cherry picked from commit e190bc05b191ff62157ca63322aedd14c7e87d32)
Signed-off-by: You-Sheng Yang <vicamo.yang at canonical.com>
---
 drivers/net/wireless/ath/ath11k/dp_tx.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath11k/dp_tx.c b/drivers/net/wireless/ath/ath11k/dp_tx.c
index 7aac4b0eea0c..6f40e72f41e6 100644
--- a/drivers/net/wireless/ath/ath11k/dp_tx.c
+++ b/drivers/net/wireless/ath/ath11k/dp_tx.c
@@ -543,8 +543,12 @@ int ath11k_dp_tx_send_reo_cmd(struct ath11k_base *ab, struct dp_rx_tid *rx_tid,
 	cmd_ring = &ab->hal.srng_list[dp->reo_cmd_ring.ring_id];
 	cmd_num = ath11k_hal_reo_cmd_send(ab, cmd_ring, type, cmd);
 
+	/* cmd_num should start from 1, during failure return the error code */
+	if (cmd_num < 0)
+		return cmd_num;
+
 	/* reo cmd ring descriptors has cmd_num starting from 1 */
-	if (cmd_num <= 0)
+	if (cmd_num == 0)
 		return -EINVAL;
 
 	if (!cb)
-- 
2.29.2