dmaengine: at_hdmac: Fix completion of unissued descriptor in case of errors
authorTudor Ambarus <tudor.ambarus@microchip.com>
Tue, 25 Oct 2022 09:02:46 +0000 (12:02 +0300)
committerVinod Koul <vkoul@kernel.org>
Tue, 8 Nov 2022 05:13:57 +0000 (10:43 +0530)
commitef2cb4f0ce479f77607b04c4b0414bf32f863ee8
tree7e15b5ce6ed6a972753b884926ef71e8eef73f9a
parentba2423633ba646e1df20e30cb3cf35495c16f173
dmaengine: at_hdmac: Fix completion of unissued descriptor in case of errors

In case the controller detected an error, the code took the chance to move
all the queued (submitted) descriptors to the active (issued) list. This
was wrong as if there were any descriptors in the submitted list they were
moved to the issued list without actually issuing them to the controller,
thus a completion could be raised without even fireing the descriptor.

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/20221025090306.297886-13-tudor.ambarus@microchip.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
drivers/dma/at_hdmac.c