dmaengine: at_hdmac: Fix descriptor handling when issuing it to hardware
authorTudor Ambarus <tudor.ambarus@microchip.com>
Tue, 25 Oct 2022 09:02:45 +0000 (12:02 +0300)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 16 Nov 2022 08:58:29 +0000 (09:58 +0100)
commit14f5462e4a004a944b27fcbfd509f020d01c810d
tree41c7522fb25b41739b31871d2734a0377922da50
parent5482403228be4bd133d6254b3b3b2f11b38e8ab5
dmaengine: at_hdmac: Fix descriptor handling when issuing it to hardware

commit ba2423633ba646e1df20e30cb3cf35495c16f173 upstream.

As it was before, the descriptor was issued to the hardware without adding
it to the active (issued) list. This could result in a completion of other
descriptor, or/and in the descriptor never being completed.

Fixes: dc78baa2b90b ("dmaengine: at_hdmac: new driver for the Atmel AHB DMA Controller")
Reported-by: Peter Rosin <peda@axentia.se>
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/lkml/13c6c9a2-6db5-c3bf-349b-4c127ad3496a@axentia.se/
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20221025090306.297886-1-tudor.ambarus@microchip.com
Link: https://lore.kernel.org/r/20221025090306.297886-12-tudor.ambarus@microchip.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/dma/at_hdmac.c