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- #GOOD# [1289ace5b4f70f1e68ce785735b82c7e483de863] Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
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- #GOOD# [d0021d3bdfe9d551859bca1f58da0e6be8e26043] Merge remote-tracking branch 'asoc/topic/wm8960' into asoc-next
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- #BAD# [0bdf5a05647a66dcc6394986e061daeac9b1cf96] drm/i915: Add reverse mapping between port and intel_encoder
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- #BAD# [f0f59a00a1c9be11038bef5aa735ed7dd985f9cf] drm/i915: Type safe register read/write
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- #GOOD# [9bca5d0ca76c0ce029e2b43cf081863e7e8f6768] drm/i915: Add missing ')' to SKL_PS_ECC_STAT define
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- f0f59a00a1c9be11038bef5aa735ed7dd985f9cf is the first bad commit
- commit f0f59a00a1c9be11038bef5aa735ed7dd985f9cf
- Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
- Date: Wed Nov 18 15:33:26 2015 +0200
-
- drm/i915: Type safe register read/write
-
- Make I915_READ and I915_WRITE more type safe by wrapping the register
- offset in a struct. This should eliminate most of the fumbles we've had
- with misplaced parens.
-
- This only takes care of normal mmio registers. We could extend the idea
- to other register types and define each with its own struct. That way
- you wouldn't be able to accidentally pass the wrong thing to a specific
- register access function.
-
- The gpio_reg setup is probably the ugliest thing left. But I figure I'd
- just leave it for now, and wait for some divine inspiration to strike
- before making it nice.
-
- As for the generated code, it's actually a bit better sometimes. Eg.
- looking at i915_irq_handler(), we can see the following change:
- lea 0x70024(%rdx,%rax,1),%r9d
- mov $0x1,%edx
- - movslq %r9d,%r9
- - mov %r9,%rsi
- - mov %r9,-0x58(%rbp)
- - callq *0xd8(%rbx)
- + mov %r9d,%esi
- + mov %r9d,-0x48(%rbp)
- callq *0xd8(%rbx)
-
- So previously gcc thought the register offset might be signed and
- decided to sign extend it, just in case. The rest appears to be
- mostly just minor shuffling of instructions.
-
- v2: i915_mmio_reg_{offset,equal,valid}() helpers added
- s/_REG/_MMIO/ in the register defines
- mo more switch statements left to worry about
- ring_emit stuff got sorted in a prep patch
- cmd parser, lrc context and w/a batch buildup also in prep patch
- vgpu stuff cleaned up and moved to a prep patch
- all other unrelated changes split out
- v3: Rebased due to BXT DSI/BLC, MOCS, etc.
- v4: Rebased due to churn, s/i915_mmio_reg_t/i915_reg_t/
-
- Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
- Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
- Link: http://patchwork.freedesktop.org/patch/msgid/1447853606-2751-1-git-send-email-ville.syrjala@linux.intel.com
-
- :040000 040000 c0e5d868baa9f128af701fa0642d9c1551ee415c 1fbd83167b2645ee34dfd626b8c38f15114d45d6 M drivers
-