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Date:   Thu, 2 Nov 2017 12:36:17 +1100
From:   Stephen Rothwell <>
To:     Ulf Hansson <>
Cc:     Linux-Next Mailing List <>,
        Linux Kernel Mailing List <>,
        Douglas Anderson <>,
        Shawn Lin <>
Subject: linux-next: build warning after merge of the mmc tree

Hi Ulf,

After merging the mmc tree, today's linux-next build (arm
multi_v7_defconfig) produced this warning:

In file included from include/linux/irqflags.h:14:0,
                 from arch/arm/include/asm/bitops.h:27,
                 from include/linux/bitops.h:37,
                 from include/linux/kernel.h:10,
                 from include/asm-generic/bug.h:15,
                 from arch/arm/include/asm/bug.h:59,
                 from include/linux/bug.h:4,
                 from include/linux/thread_info.h:11,
                 from include/asm-generic/current.h:4,
                 from ./arch/arm/include/generated/asm/current.h:1,
                 from include/linux/sched.h:11,
                 from include/linux/blkdev.h:4,
                 from drivers/mmc/host/dw_mmc.c:14:
drivers/mmc/host/dw_mmc.c: In function 'dw_mci_set_drto':
include/linux/typecheck.h:11:18: warning: comparison of distinct pointer types lacks a cast
  (void)(&__dummy == &__dummy2); \
include/linux/spinlock.h:221:3: note: in expansion of macro 'typecheck'
   typecheck(unsigned long, flags); \
include/linux/spinlock.h:346:2: note: in expansion of macro 'raw_spin_lock_irqsave'
  raw_spin_lock_irqsave(spinlock_check(lock), flags); \
drivers/mmc/host/dw_mmc.c:1953:2: note: in expansion of macro 'spin_lock_irqsave'
  spin_lock_irqsave(&host->irq_lock, irqflags);

Introduced by commit

  80a2a5a7745b ("mmc: dw_mmc: Cleanup the DTO timer like the CTO one")

Stephen Rothwell

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