Commit daa16bc5 authored Mar 02, 2012 by Raja Mani Committed by Kalle Valo Mar 05, 2012

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>

parent d1f41597

drivers/net/wireless/ath/ath6kl/sdio.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -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;

		if (request & HIF_WRITE)
		memcpy(tbuf, buf, len);

		bounced = true;
		} else
		tbuf = buf;