Author: manu
Date: Thu Nov 28 18:18:10 2019
New Revision: 355181
URL: https://svnweb.freebsd.org/changeset/base/355181
Log:
MFC r353354:
dwmmc: Reset the dma controller at attach
If the bootloader enabled DMA we need to fully reset the DMA controller
otherwise we might have some stale data in it that provoke weird
behavior.
Modified:
stable/12/sys/dev/mmc/host/dwmmc.c
Directory Properties:
stable/12/ (props changed)
Modified: stable/12/sys/dev/mmc/host/dwmmc.c
==============================================================================
--- stable/12/sys/dev/mmc/host/dwmmc.c Thu Nov 28 18:15:05 2019
(r355180)
+++ stable/12/sys/dev/mmc/host/dwmmc.c Thu Nov 28 18:18:10 2019
(r355181)
@@ -559,6 +559,7 @@ dwmmc_attach(device_t dev)
}
if (!sc->use_pio) {
+ dma_stop(sc);
if (dma_setup(sc))
return (ENXIO);
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