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| author | Ziyuan <ziyuan.biubiu@gmail.com> | 2017-08-30 10:58:21 +0800 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2017-10-30 11:45:55 +0100 |
| commit | 2afcbdb0d88b41dace18d7dd2ace62ce4b997319 (patch) | |
| tree | 2d7707d8f877c38adefea86f7d095673a4cb6ffa /drivers/mmc | |
| parent | c7ddaa2ec992a096905d897fc00ae4901a912f2f (diff) | |
| download | linux-2afcbdb0d88b41dace18d7dd2ace62ce4b997319.tar.bz2 | |
mmc: dw_mmc: correct outdated comment for use_dma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 <ziyuan.biubiu@gmail.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/host/dw_mmc.h | 3 |
1 files changed, 2 insertions, 1 deletions
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. |