Eric Pilmore 8ae2113702 dmaengine: ptdma: check for null desc before calling pt_cmd_callback ... [ Upstream commit 9284699861 ] Resolves a panic that can occur on AMD systems, typically during host shutdown, after the PTDMA driver had been exercised. The issue was the pt_issue_pending() function is mistakenly assuming that there will be at least one descriptor in the Submitted queue when the function is called. However, it is possible that both the Submitted and Issued queues could be empty, which could result in pt_cmd_callback() being mistakenly called with a NULL pointer. Ref: Bugzilla Bug 216856. Fixes: 6fa7e0e836 ("dmaengine: ptdma: fix concurrency issue with multiple dma transfer") Signed-off-by: Eric Pilmore <epilmore@gigaio.com> Link: https://lore.kernel.org/r/20230210075142.58253-1-epilmore@gigaio.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-03-10 09:33:39 +01:00
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Kconfig	…
Makefile	dmaengine: ptdma: Add debugfs entries for PTDMA	2021-08-29 19:14:20 +05:30
ptdma-debugfs.c	dmaengine: ptdma: Add debugfs entries for PTDMA	2021-08-29 19:14:20 +05:30
ptdma-dev.c	ptdma: pt_core_execute_cmd() should use spinlock	2023-02-01 08:34:25 +01:00
ptdma-dmaengine.c	dmaengine: ptdma: check for null desc before calling pt_cmd_callback	2023-03-10 09:33:39 +01:00
ptdma-pci.c	…
ptdma.h	ptdma: pt_core_execute_cmd() should use spinlock	2023-02-01 08:34:25 +01:00