Set CONFIG_PATA_MACIO=y

[Steve Magoun]

Had some time to fool around with Ubuntu on a PowerBook3,5. I discovered that the 3.16 kernel has a regression in it, it does not set CONFIG_PATA_MACIO=y. As a result /dev/sda is not available in the initramfs and the machine cannot mount the root filesystem. This is a regression from the 3.13.0-37 kernel in trusty.

To reproduce:
1) Set up a Powerbook or Powermac running Ubuntu (I have 12.04 on a Powerbook3,5, with the 3.13.0-37 kernel installed)
2) Install the 3.16.0-21.28 kernel from https://launchpad.net/ubuntu/+source/linux/3.16.0-21.28/+build/6437990
3) Reboot

Expected results:
The machine reboots normally

Actual results:
Boot fails in the initramfs with the error "gave up waiting for boot device"

From the busy box prompt, running "modprobe pata_macio" then "exit" allows the machine to keep booting.

A permanent workaround is to add pata_macio to /etc/initramfs-tools/modules and then update the initramfs

There is a brief discussion of a similar problem in Precise in bug 876982. CONFIG_PATA_MACIO=y was set in 3.2.0-2.6.

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 1378894

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Steve Magoun (smagoun)]

I don't have logs for the busybox failure....a check of the kernel config history should verify that the config changed between trusty and utopic.

[Joseph Salisbury (jsalisbury)]

I confirmed that CONFIG_PATA_MACIO is set to 'y' in Trusty and 'm' in Utopic. Researching further.

[Joseph Salisbury (jsalisbury)]

apw changed CONFIG_PATA_MACIO to y for utopic, so it should be available in the next kernel(The one after whats currently in -proposed).

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 3.16.0-22.29

---------------
linux (3.16.0-22.29) utopic; urgency=low

  [ Tim Gardner ]

  * Release Tracking Bug
    - LP: #1379321

  [ Andrew Morton ]

  * SAUCE: (no-up) mm-introduce-a-general-rcu-get_user_pages_fast-fix
    - LP: #1309221
  * SAUCE: (no-up) arm64-mm-enable-rcu-fast_gup-checkpatch-fixes
    - LP: #1309221

  [ Andy Whitcroft ]

  * [Config] CONFIG_PATA_MACIO=y
    - LP: #1378894
  * [Config] enable cloud tools on i386
    - LP: #1367399
  * SAUCE: scsi: hyper-v storsvc switch up to SPC-3
    - LP: #1354397
  * SAUCE: powerpc -- fix mm/slice.c switch include to linux/hugetlb.h

  [ dann frazier ]

  * [Config] CONFIG_HAVE_GENERIC_RCU_GUP=y
    - LP: #1309221

  [ Feng Kan ]

  * SAUCE: (no-up) power: reset: Add generic SYSCON register mapped reset
    - LP: #1284433
  * SAUCE: (no-up) arm64: dts: Add X-Gene reboot driver dts node
    - LP: #1284433

  [ Ian Munsie ]

  * SAUCE: (no-up) powerpc/cell: Move spu_handle_mm_fault() out of cell platform
  * SAUCE: (no-up) powerpc/cell: Move data segment faulting code out of cell platform
  * SAUCE: (no-up) powerpc/cell: Make spu_flush_all_slbs() generic
  * SAUCE: (no-up) powerpc/msi: Improve IRQ bitmap allocator
  * SAUCE: (no-up) powerpc/mm: Export mmu_kernel_ssize and mmu_linear_psize
  * SAUCE: (no-up) powerpc/powernv: Split out set MSI IRQ chip code
  * SAUCE: (no-up) cxl: Add new header for call backs and structs
  * SAUCE: (no-up) powerpc/powerpc: Add new PCIe functions for allocating cxl interrupts
  * SAUCE: (no-up) powerpc/mm: Add new hash_page_mm()
  * SAUCE: (no-up) powerpc/opal: Add PHB to cxl mode call
  * SAUCE: (no-up) powerpc/mm: Add hooks for cxl
  * SAUCE: (no-up) cxl: Add base builtin support
  * SAUCE: (no-up) cxl: Driver code for powernv PCIe based cards for userspace access
  * SAUCE: (no-up) cxl: Add userspace header file
  * SAUCE: (no-up) cxl: Add driver to Kbuild and Makefiles
  * SAUCE: (no-up) cxl: Add documentation for userspace APIs
  * SAUCE: (no-up) cxl: Fix afu_read() not doing finish_wait() on signal or non-blocking

  [ John Johansen ]

  * SAUCE: Revert: fix: only allow a single threaded process to ...
    - LP: #1371310

  [ Steve Capper ]

  * SAUCE: (no-up) mm: introduce a general RCU get_user_pages_fast()
    - LP: #1309221
  * SAUCE: (no-up) arm: mm: introduce special ptes for LPAE
    - LP: #1309221
  * SAUCE: (no-up) arm: mm: enable HAVE_RCU_TABLE_FREE logic
    - LP: #1309221
  * SAUCE: (no-up) arm: mm: enable RCU fast_gup
    - LP: #1309221
  * SAUCE: (no-up) arm64: mm: enable HAVE_RCU_TABLE_FREE logic
    - LP: #1309221
  * SAUCE: (no-up) arm64: mm: enable RCU fast_gup
    - LP: #1309221

  [ Tim Gardner ]

  * SAUCE: Added bnx2x/bnx2x-e1-7.8.19.0.fw
    - LP: #1378491
  * [Config] CONFIG_CXL=m
  * [Config] CONFIG_POWER_RESET_SYSCON=y for arm64
  * SAUCE: (no-up) Restrict CONFIG_POWER_RESET_SYSCON to arm64 only

  [ Upstream Kernel Changes ]

  * powerpc: implement vmemmap_list_free()
    - LP: #1378413
  * powerpc: implement vmemmap_remove_mapping() for BOOK3S
    - LP: #1378413
  * powerpc: implement vmemmap_free()
    - LP: #1378413
  * powerpc: start loop at section start of start in vm...