ath6kl: Restrict memcpy to bounce buffer only for write request

No need to copy received local buffer content to bounce buffer
(DMA buffer) while performing sync READ operation from the chip.

It's applicable for only WRITE operation.

Signed-off-by: Raja Mani <rmani@qca.qualcomm.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>

diff --git a/drivers/net/wireless/ath/ath6kl/sdio.c b/drivers/net/wireless/ath/ath6kl/sdio.c
index 346f5dd3a9541b33124fe04ccd695ca852b7dcb3..e2f42a13395249d96a8406a6599ff5921804cf74 100644 (file)
--- a/drivers/net/wireless/ath/ath6kl/sdio.c
+++ b/drivers/net/wireless/ath/ath6kl/sdio.c
@@ -405,7 +405,10 @@ static int ath6kl_sdio_read_write_sync(struct ath6kl *ar, u32 addr, u8 *buf,
                        return -ENOMEM;
                mutex_lock(&ar_sdio->dma_buffer_mutex);
                tbuf = ar_sdio->dma_buffer;
-               memcpy(tbuf, buf, len);
+
+               if (request & HIF_WRITE)
+                       memcpy(tbuf, buf, len);
+
                bounced = true;
        } else
                tbuf = buf;