From: Christian Lütke-Stetzkamp Date: Sun, 29 Apr 2018 17:32:38 +0000 (+0200) Subject: staging: mt7621-mmc: Don't disables DMA X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=37c6325b584f7f68861e2418a32e2c32d5a35a6c;p=openwrt%2Fstaging%2Fblogic.git staging: mt7621-mmc: Don't disables DMA Current code disables the DMA after the transfer. That only changes the transfer mode to non-DMA and does not save any power. This is not necessary any more, because now DMA transfer is always used. The macro for disabling DMA transfer is also removed, because it is not used any more. Signed-off-by: Christian Lütke-Stetzkamp Reviewed-by: NeilBrown Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/mt7621-mmc/sd.c b/drivers/staging/mt7621-mmc/sd.c index 00c862b02419..0d1eed2a7964 100644 --- a/drivers/staging/mt7621-mmc/sd.c +++ b/drivers/staging/mt7621-mmc/sd.c @@ -199,7 +199,6 @@ static int msdc_rsp[] = { #define msdc_fifo_read8() sdr_read8(MSDC_RXDATA) #define msdc_dma_on() sdr_clr_bits(MSDC_CFG, MSDC_CFG_PIO) -#define msdc_dma_off() sdr_set_bits(MSDC_CFG, MSDC_CFG_PIO) #define msdc_retry(expr, retry, cnt) \ do { \ @@ -1282,7 +1281,6 @@ static int msdc_do_request(struct mmc_host *mmc, struct mmc_request *mrq) done: if (data != NULL) { host->data = NULL; - msdc_dma_off(); dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len, mmc_get_dma_dir(data)); host->blksz = 0;