[Bug 2106220] Re: Pi camera module requires user access to /dev/dma_heap/linux, cma

[Dave Jones]

*** This bug is a duplicate of bug 2091380 ***
    https://bugs.launchpad.net/bugs/2091380

** This bug has been marked a duplicate of bug 2091380
   root permissions required to r/w to DMA heap for libpisp on RPi5

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https://bugs.launchpad.net/bugs/2106220

Title:
  Pi camera module requires user access to /dev/dma_heap/linux,cma

Status in ubuntu-raspi-settings package in Ubuntu:
  Confirmed

Bug description:
  The libcamera stack on the Raspberry Pi requires that the user have
  read/write access to /dev/dma_heap/linux,cma to allocate streaming
  buffers. After discussion with the kernel team there shouldn't be any
  issue with granting this access via the udev uaccess mechanism.

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