what is the purpose of "CONFIG_DMA_IS_DMA32"?

  perhaps a silly question, but:

$ grep -r "DMA_IS_DMA32" *
arch/ia64/defconfig:CONFIG_DMA_IS_DMA32=y
arch/ia64/configs/sim_defconfig:CONFIG_DMA_IS_DMA32=y
arch/ia64/configs/zx1_defconfig:CONFIG_DMA_IS_DMA32=y
arch/ia64/configs/tiger_defconfig:CONFIG_DMA_IS_DMA32=y
arch/ia64/configs/bigsur_defconfig:CONFIG_DMA_IS_DMA32=y
arch/ia64/configs/gensparse_defconfig:CONFIG_DMA_IS_DMA32=y
$

what is the purpose of a configuration symbol that is set but never
involved in a conditional check?

  i'm guessing that used to be a config setting in the ia64/Kconfig
file that has since vanished.

rday
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: what is the purpose of "CONFIG_DMA_IS_DMA32"?
    • From: Christoph Lameter <[email protected]>
  • Re: what is the purpose of "CONFIG_DMA_IS_DMA32"?
    • From: Andi Kleen <[email protected]>

• Prev by Date: Re: [patch] Re: 2.6.19-rc6-mm1 -- sched-improve-migration-accuracy.patch slows boot
• Next by Date: Re: 2.6.19-rc6-mm1: drivers/net/chelsio/: unused code
• Previous by thread: [RFC][PATCH] dm-cache: block level disk cache target for device mapper
• Next by thread: Re: what is the purpose of "CONFIG_DMA_IS_DMA32"?
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]