linux-kernel - mainline build failure due to 81c0386c1376 ("regmap: mmio: Support accelerared noinc operations")

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Date:   Wed, 5 Oct 2022 07:30:56 +0100
From:   "Sudip Mukherjee (Codethink)" <sudipm.mukherjee@...il.com>
To:     Linus Walleij <linus.walleij@...aro.org>,
        Mark Brown <broonie@...nel.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        linux-kernel@...r.kernel.org,
        Linus Torvalds <torvalds@...ux-foundation.org>
Subject: mainline build failure due to 81c0386c1376 ("regmap: mmio: Support
 accelerared noinc operations")

Hi All,

The latest mainline kernel branch fails to build alpha allmodconfig
with the error:

drivers/base/regmap/regmap-mmio.c: In function 'regmap_mmio_noinc_write':
drivers/base/regmap/regmap-mmio.c:222:17: error: implicit declaration of function 'writesb'; did you mean 'writeb'? [-Werror=implicit-function-declaration]
  222 |                 writesb(ctx->regs + reg, (const u8 *)val, val_count);
      |                 ^~~~~~~
      |                 writeb
drivers/base/regmap/regmap-mmio.c:225:17: error: implicit declaration of function 'writesw'; did you mean 'writew'? [-Werror=implicit-function-declaration]
  225 |                 writesw(ctx->regs + reg, (const u16 *)val, val_count);
      |                 ^~~~~~~
      |                 writew
drivers/base/regmap/regmap-mmio.c:228:17: error: implicit declaration of function 'writesl'; did you mean 'writel'? [-Werror=implicit-function-declaration]
  228 |                 writesl(ctx->regs + reg, (const u32 *)val, val_count);
      |                 ^~~~~~~
      |                 writel
drivers/base/regmap/regmap-mmio.c:232:17: error: implicit declaration of function 'writesq'; did you mean 'writeq'? [-Werror=implicit-function-declaration]
  232 |                 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")

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

Note:
Already reported for next-20220818 at https://lore.kernel.org/lkml/Yv4hhoTTcRuk%2F2Kl@debian/

-- 
Regards
Sudip