[PATCH 0/7] dmaengine: zynqmp_dma: fix lockdep warning and cleanup

[Michael Tretter]

Hi,

I reported a lockdep warning in the ZynqMP DMA driver a few weeks ago [0].
This series fixes the reported warning and performs some cleanup that I found
while looking at the driver more closely.

Patches 1-4 are the cleanups. They affect the log output of the driver, allow
to compile the driver on other platforms when COMPILE_TEST is enabled, and
remove unused included header files from the driver.

Patches 5-7 aim to fix the lockdep warning. Patch 5 and 6 restructure the
locking in the driver to make it more fine-grained instead of holding the lock
for the entire tasklet. Patch 7 finally fixes the warning.

Michael

[0] https://lore.kernel.org/linux-arm-kernel/20210601130108.GA12967@pengutronix.de/

Michael Tretter (7):
  dmaengine: zynqmp_dma: simplify with dev_err_probe
  dmaengine: zynqmp_dma: drop message on probe success
  dmaengine: zynqmp_dma: enable COMPILE_TEST
  dmaengine: zynqmp_dma: cleanup includes
  dmaengine: zynqmp_dma: cleanup after completing all descriptors
  dmaengine: zynqmp_dma: refine dma descriptor locking
  dmaengine: zynqmp_dma: fix lockdep warning in tasklet

 drivers/dma/Kconfig             |  2 +-
 drivers/dma/xilinx/zynqmp_dma.c | 67 +++++++++++++++++----------------
 2 files changed, 35 insertions(+), 34 deletions(-)

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2.30.2