Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes, in particular in the
context in which this code is being used.

So, change the following form:

sizeof(*rx) + (sizeof(struct htt_rx_indication_mpdu_range) * num_mpdu_ranges)

 to :

struct_size(rx, mpdu_ranges, num_mpdu_ranges)

This code was detected with the help of Coccinelle.

Signed-off-by: Gustavo A. R. Silva <[email protected]>
---
 drivers/net/wireless/ath/ath10k/htt_rx.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/net/wireless/ath/ath10k/htt_rx.c 
b/drivers/net/wireless/ath/ath10k/htt_rx.c
index a20ea270d519..9652cf323927 100644
--- a/drivers/net/wireless/ath/ath10k/htt_rx.c
+++ b/drivers/net/wireless/ath/ath10k/htt_rx.c
@@ -2193,9 +2193,7 @@ static void ath10k_htt_rx_proc_rx_ind_ll(struct 
ath10k_htt *htt,
        mpdu_ranges = htt_rx_ind_get_mpdu_ranges(rx);
 
        ath10k_dbg_dump(ar, ATH10K_DBG_HTT_DUMP, NULL, "htt rx ind: ",
-                       rx, sizeof(*rx) +
-                       (sizeof(struct htt_rx_indication_mpdu_range) *
-                               num_mpdu_ranges));
+                       rx, struct_size(rx, mpdu_ranges, num_mpdu_ranges));
 
        for (i = 0; i < num_mpdu_ranges; i++)
                mpdu_count += mpdu_ranges[i].mpdu_count;
-- 
2.21.0


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