From 2afcbdb0d88b41dace18d7dd2ace62ce4b997319 Mon Sep 17 00:00:00 2001 From: Ziyuan Date: Wed, 30 Aug 2017 10:58:21 +0800 Subject: [PATCH] mmc: dw_mmc: correct outdated comment for use_dma Since commit 3fc7eaef44db ("mmc: dw_mmc: Add external dma interface support") use_dma no longer means only the data transfer mode, and includes dma transmission channel. So make it more clear. Signed-off-by: Ziyuan Signed-off-by: Ulf Hansson --- drivers/mmc/host/dw_mmc.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/host/dw_mmc.h b/drivers/mmc/host/dw_mmc.h index 34474ad731aa..e3124f06a47e 100644 --- a/drivers/mmc/host/dw_mmc.h +++ b/drivers/mmc/host/dw_mmc.h @@ -74,7 +74,8 @@ struct dw_mci_dma_slave { * @stop_abort: The command currently prepared for stoping transfer. * @prev_blksz: The former transfer blksz record. * @timing: Record of current ios timing. - * @use_dma: Whether DMA channel is initialized or not. + * @use_dma: Which DMA channel is in use for the current transfer, zero + * denotes PIO mode. * @using_dma: Whether DMA is in use for the current transfer. * @dma_64bit_address: Whether DMA supports 64-bit address mode or not. * @sg_dma: Bus address of DMA buffer.