Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v4.19.77 2018-12-13T08:16:20+00:00 2018-12-13T08:16:20+00:00 Bin Liu b-liu@ti.com 2018-11-12T15:43:22+00:00 urn:sha1:37e74076f3cb92a9204e1a9a14687fe2a0d6b1c5 commit 59861547ec9a9736e7882f6fb0c096a720ff811a upstream. The driver defines three states for a cppi channel. - idle: .chan_busy == 0 && not in .pending list - pending: .chan_busy == 0 && in .pending list - busy: .chan_busy == 1 && not in .pending list There are cases in which the cppi channel could be in the pending state when cppi41_dma_issue_pending() is called after cppi41_runtime_suspend() is called. cppi41_stop_chan() has a bug for these cases to set channels to idle state. It only checks the .chan_busy flag, but not the .pending list, then later when cppi41_runtime_resume() is called the channels in .pending list will be transitioned to busy state. Removing channels from the .pending list solves the problem. Fixes: 975faaeb9985 ("dma: cppi41: start tear down only if channel is busy") Cc: stable@vger.kernel.org # v3.15+ Signed-off-by: Bin Liu <b-liu@ti.com> Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2018-04-25T09:26:21+00:00 Peter Ujfalusi peter.ujfalusi@ti.com 2018-04-25T08:45:03+00:00 urn:sha1:d88b1397c674178e595319fab4a3cd434c915639 Collect the Texas Instruments DMA drivers under drivers/dma/ti/ Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Vinod Koul <vkoul@kernel.org>