Messages in this thread Patch in this message | | | From | Juergen Borleis <> | Subject | [PATCH 1/2] mmc: mxcmmc: really configure the DMA on demand | Date | Thu, 29 Jul 2021 09:29:28 +0200 |
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Calling mxcmci_use_dma(host) is intended for the next transfer only, not for generic detection if DMA is possible. Without this change, the DMA gets never configured and thus, never used.
Signed-off-by: Juergen Borleis <jbe@pengutronix.de> --- drivers/mmc/host/mxcmmc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/mxcmmc.c b/drivers/mmc/host/mxcmmc.c index 2fe6fcd..611f827 100644 --- a/drivers/mmc/host/mxcmmc.c +++ b/drivers/mmc/host/mxcmmc.c @@ -834,7 +834,8 @@ static void mxcmci_set_ios(struct mmc_host *mmc, struct mmc_ios *ios) else burstlen = 4; - if (mxcmci_use_dma(host) && burstlen != host->burstlen) { + if (host->dma != NULL && burstlen != host->burstlen) { + /* reconfigure DMA on changes only */ host->burstlen = burstlen; ret = mxcmci_setup_dma(mmc); if (ret) { -- 2.20.1
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