ath11k: Fix target crash due to WBM_IDLE_LINK ring desc shortage

Make sure the number of WBM_IDLE_LINK ring descriptors is power
of 2. This increases the number of descriptors to 32k from the
current ~18k to fix the target assert because of the shortage in
the descriptors in WBM_IDLE_LINK ring. Remove unnecessary
power of 2 calculation in ath11k_dp_link_desc_setup() as it is
not required after this change.

Signed-off-by: Vasanthakumar Thiagarajan <vthiagar@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

diff --git a/drivers/net/wireless/ath/ath11k/dp.c b/drivers/net/wireless/ath/ath11k/dp.c
index ff510e8..72c21cf 100644 (file)
--- a/drivers/net/wireless/ath/ath11k/dp.c
+++ b/drivers/net/wireless/ath/ath11k/dp.c
@@ -478,6 +478,9 @@ static int ath11k_wbm_idle_ring_setup(struct ath11k_base *ab, u32 *n_link_desc)
        *n_link_desc = n_mpdu_link_desc + n_mpdu_queue_desc +
                      n_tx_msdu_link_desc + n_rx_msdu_link_desc;
 
+       if (*n_link_desc & (*n_link_desc - 1))
+               *n_link_desc = 1 << fls(*n_link_desc);
+
        ret = ath11k_dp_srng_setup(ab, &dp->wbm_idle_ring,
                                   HAL_WBM_IDLE_LINK, 0, 0, *n_link_desc);
        if (ret) {
@@ -499,9 +502,6 @@ int ath11k_dp_link_desc_setup(struct ath11k_base *ab,
        u32 *desc;
        int i, ret;
 
-       if (n_link_desc & (n_link_desc - 1))
-               n_link_desc = 1 << fls(n_link_desc);
-
        tot_mem_sz = n_link_desc * HAL_LINK_DESC_SIZE;
        tot_mem_sz += HAL_LINK_DESC_ALIGN;