Commit b6c8d568 authored by Alexander Sverdlin's avatar Alexander Sverdlin Committed by Greg Kroah-Hartman

dmaengine: ep93xx: Always start from BASE0

commit 0037ae47 upstream.

The current buffer is being reset to zero on device_free_chan_resources()
but not on device_terminate_all(). It could happen that HW is restarted and
expects BASE0 to be used, but the driver is not synchronized and will start
from BASE1. One solution is to reset the buffer explicitly in
m2p_hw_setup().
Signed-off-by: default avatarAlexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: default avatarVinod Koul <vinod.koul@intel.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 84b47444
...@@ -325,6 +325,8 @@ static int m2p_hw_setup(struct ep93xx_dma_chan *edmac) ...@@ -325,6 +325,8 @@ static int m2p_hw_setup(struct ep93xx_dma_chan *edmac)
| M2P_CONTROL_ENABLE; | M2P_CONTROL_ENABLE;
m2p_set_control(edmac, control); m2p_set_control(edmac, control);
edmac->buffer = 0;
return 0; return 0;
} }
......
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