linux-kernel - [3.8-rc4 arm] SCSI_SYM53C8XX_2 module cannot register IRQ

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Date:	Sun, 20 Jan 2013 21:24:26 +0900
From:	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To:	linus.walleij@...aro.org, rob.herring@...xeda.com
Cc:	grant.likely@...retlab.ca, rmk+kernel@....linux.org.uk,
	linux-kernel@...r.kernel.org
Subject: [3.8-rc4 arm] SCSI_SYM53C8XX_2 module cannot register IRQ

Hello.

I'm experiencing two regressions in 3.8-rcX.

Regression:

  (1) Console shows nothing, which makes it impossible to determine whether
      the system is working or not.

  (2) SCSI_SYM53C8XX_2 cannot register IRQ, showing below messages upon load.

      PCI: enabling device 0000:00:0c.0 (0100 -> 0103)
      sym0: <895a> rev 0x0 at pci 0000:00:0c.0 irq 27
      sym0: No NVRAM, ID 7, Fast-40, LVD, parity checking
      sym0: request irq 27 failure
      sym0: giving up ...

While (1) was fixed by now, I can't bisect (2) since (1) is preventing (2) from
printing messages.

Bisection result:

  No problem until commit b1112249 "OMAPDSS: DISPC: cleanup lcd/digit enable/disable".

  (1) was introduced by commit 07c9249f "ARM: 7554/1: VIC: use irq_domain_add_simple()".

  (2) was introduced between commit 07c9249f "ARM: 7554/1: VIC: use irq_domain_add_simple()"
  and commit 5c49985c "Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm".

  (1) was fixed by commit 5c49985c "Merge branch 'fixes' of git://git.linaro.org/people/rmk/linux-arm".

  (2) is not yet fixed as of commit 5da1f88b "Merge tag 'usb-3.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb".

Environment:

  Host is Ubuntu 12.04 on x86_32.
  Cross compiling with ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- using
  gcc-arm-linux-gnueabi 4:4.6.2-7 and booting with arch/arm/boot/zImage using
  qemu-system 1.0.50-2012.03-0ubuntu2.1 .

Command line:

  $ qemu-system-arm -M versatilepb -hda hda.img -kernel arch/arm/boot/zImage -append "root=/dev/sda1"

Kernel config:

  http://I-love.SAKURA.ne.jp/tmp/config-3.8-rc1-arm

Regards.
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