build failure of next-20220818 due to 81c0386c1376 ("regmap: mmio: Support accelerared noinc operations")

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Hi All,

Not sure if it has been reported, builds of alpha allmodconfig have
failed to build next-20220818 with the error:

drivers/base/regmap/regmap-mmio.c: In function 'regmap_mmio_noinc_write':
drivers/base/regmap/regmap-mmio.c:221:17: error: implicit declaration of function 'writesb'; did you mean 'writeb'? [-Werror=implicit-function-declaration]
  221 |                 writesb(ctx->regs + reg, (const u8 *)val, val_count);
      |                 ^~~~~~~
      |                 writeb
drivers/base/regmap/regmap-mmio.c:224:17: error: implicit declaration of function 'writesw'; did you mean 'writew'? [-Werror=implicit-function-declaration]
  224 |                 writesw(ctx->regs + reg, (const u16 *)val, val_count);
      |                 ^~~~~~~
      |                 writew
drivers/base/regmap/regmap-mmio.c:227:17: error: implicit declaration of function 'writesl'; did you mean 'writel'? [-Werror=implicit-function-declaration]
  227 |                 writesl(ctx->regs + reg, (const u32 *)val, val_count);
      |                 ^~~~~~~
      |                 writel
drivers/base/regmap/regmap-mmio.c:231:17: error: implicit declaration of function 'writesq'; did you mean 'writeq'? [-Werror=implicit-function-declaration]
  231 |                 writesq(ctx->regs + reg, (const u64 *)val, val_count);
      |                 ^~~~~~~
      |                 writeq
drivers/base/regmap/regmap-mmio.c: In function 'regmap_mmio_noinc_read':
drivers/base/regmap/regmap-mmio.c:358:17: error: implicit declaration of function 'readsb'; did you mean 'readb'? [-Werror=implicit-function-declaration]
  358 |                 readsb(ctx->regs + reg, (u8 *)val, val_count);
      |                 ^~~~~~
      |                 readb
drivers/base/regmap/regmap-mmio.c:361:17: error: implicit declaration of function 'readsw'; did you mean 'readw'? [-Werror=implicit-function-declaration]
  361 |                 readsw(ctx->regs + reg, (u16 *)val, val_count);
      |                 ^~~~~~
      |                 readw
drivers/base/regmap/regmap-mmio.c:364:17: error: implicit declaration of function 'readsl'; did you mean 'readl'? [-Werror=implicit-function-declaration]
  364 |                 readsl(ctx->regs + reg, (u32 *)val, val_count);
      |                 ^~~~~~
      |                 readl
drivers/base/regmap/regmap-mmio.c:368:17: error: implicit declaration of function 'readsq'; did you mean 'readq'? [-Werror=implicit-function-declaration]
  368 |                 readsq(ctx->regs + reg, (u64 *)val, val_count);
      |                 ^~~~~~
      |                 readq


git bisect pointed to 81c0386c1376 ("regmap: mmio: Support accelerared noinc operations")
And, reverting that commit has fixed the build failure.

I will be happy to test any patch or provide any extra log if needed.


--
Regards
Sudip



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