linux-next: build failure after merge of the fastrpc tree

linux-next: build failure after merge of the fastrpc tree

[Mark Brown]

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Hi all,

After merging the fastrpc tree, today's linux-next build (x86_64
allmodconfig) failed like this:

/tmp/next/build/drivers/misc/fastrpc.c:599:29: error: call to undeclared function 'FIELD_GET'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  599 |         idr_remove(&cctx->ctx_idr, FIELD_GET(FASTRPC_CTXID_MASK, ctx->ctxid));
      |                                    ^
/tmp/next/build/drivers/misc/fastrpc.c:737:15: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
  737 |         ctx->ctxid = FIELD_PREP(FASTRPC_CTXID_MASK, ret) |
      |                      ^
/tmp/next/build/drivers/misc/fastrpc.c:2711:10: error: call to undeclared function 'FIELD_GET'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
 2711 |         ctxid = FIELD_GET(FASTRPC_CTXID_MASK, rsp->ctx);
      |                 ^
/tmp/next/build/drivers/misc/fastrpc.c:2735:4: error: format specifies type 'unsigned long long' but the argument has type 'int' [-Werror,-Wformat]
 2733 |                         "Stale glink response ctx 0x%llx (expected seq 0x%llx), dropping\n",
      |                                                                          ~~~~
      |                                                                          %x
 2734 |                         rsp->ctx,
 2735 |                         FIELD_GET(FASTRPC_CTXID_SEQ_MASK, ctx->ctxid));
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/tmp/next/build/include/linux/dev_printk.h:165:39: note: expanded from macro 'dev_dbg'
  165 |         dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
      |                                      ~~~     ^~~~~~~~~~~
/tmp/next/build/include/linux/dynamic_debug.h:285:19: note: expanded from macro 'dynamic_dev_dbg'
  285 |                            dev, fmt, ##__VA_ARGS__)
      |                                 ~~~    ^~~~~~~~~~~
/tmp/next/build/include/linux/dynamic_debug.h:261:59: note: expanded from macro '_dynamic_func_call'
  261 |         _dynamic_func_call_cls(_DPRINTK_CLASS_DFLT, fmt, func, ##__VA_ARGS__)
      |                                                                  ^~~~~~~~~~~
/tmp/next/build/include/linux/dynamic_debug.h:259:65: note: expanded from macro '_dynamic_func_call_cls'
  259 |         __dynamic_func_call_cls(__UNIQUE_ID(ddebug), cls, fmt, func, ##__VA_ARGS__)
      |                                                                        ^~~~~~~~~~~
/tmp/next/build/include/linux/dynamic_debug.h:231:15: note: expanded from macro '__dynamic_func_call_cls'
  231 |                 func(&id, ##__VA_ARGS__);                       \
      |                             ^~~~~~~~~~~
4 errors generated.


Caused by commit

  10555ba6126ed (misc: fastrpc: Replace hardcoded ctxid mask with GENMASK)

(and one of the subsequent ones that also uses those macros).  I have
use the tree from next-20260723 instead.

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Re: linux-next: build failure after merge of the fastrpc tree

[Srinivas Kandagatla]

On 7/26/26 11:42 PM, Mark Brown wrote:
> Hi all,
> 
> After merging the fastrpc tree, today's linux-next build (x86_64
> allmodconfig) failed like this:
> 
> /tmp/next/build/drivers/misc/fastrpc.c:599:29: error: call to undeclared function 'FIELD_GET'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>   599 |         idr_remove(&cctx->ctx_idr, FIELD_GET(FASTRPC_CTXID_MASK, ctx->ctxid));
This is now fixed in fastrpc tree.

--srini

>       |                                    ^
> /tmp/next/build/drivers/misc/fastrpc.c:737:15: error: call to undeclared function 'FIELD_PREP'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>   737 |         ctx->ctxid = FIELD_PREP(FASTRPC_CTXID_MASK, ret) |
>       |                      ^
> /tmp/next/build/drivers/misc/fastrpc.c:2711:10: error: call to undeclared function 'FIELD_GET'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
>  2711 |         ctxid = FIELD_GET(FASTRPC_CTXID_MASK, rsp->ctx);
>       |                 ^
> /tmp/next/build/drivers/misc/fastrpc.c:2735:4: error: format specifies type 'unsigned long long' but the argument has type 'int' [-Werror,-Wformat]
>  2733 |                         "Stale glink response ctx 0x%llx (expected seq 0x%llx), dropping\n",
>       |                                                                          ~~~~

>       |                                                                          %x
>  2734 |                         rsp->ctx,
>  2735 |                         FIELD_GET(FASTRPC_CTXID_SEQ_MASK, ctx->ctxid));
>       |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /tmp/next/build/include/linux/dev_printk.h:165:39: note: expanded from macro 'dev_dbg'
>   165 |         dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
>       |                                      ~~~     ^~~~~~~~~~~
> /tmp/next/build/include/linux/dynamic_debug.h:285:19: note: expanded from macro 'dynamic_dev_dbg'
>   285 |                            dev, fmt, ##__VA_ARGS__)
>       |                                 ~~~    ^~~~~~~~~~~
> /tmp/next/build/include/linux/dynamic_debug.h:261:59: note: expanded from macro '_dynamic_func_call'
>   261 |         _dynamic_func_call_cls(_DPRINTK_CLASS_DFLT, fmt, func, ##__VA_ARGS__)
>       |                                                                  ^~~~~~~~~~~
> /tmp/next/build/include/linux/dynamic_debug.h:259:65: note: expanded from macro '_dynamic_func_call_cls'
>   259 |         __dynamic_func_call_cls(__UNIQUE_ID(ddebug), cls, fmt, func, ##__VA_ARGS__)
>       |                                                                        ^~~~~~~~~~~
> /tmp/next/build/include/linux/dynamic_debug.h:231:15: note: expanded from macro '__dynamic_func_call_cls'
>   231 |                 func(&id, ##__VA_ARGS__);                       \
>       |                             ^~~~~~~~~~~
> 4 errors generated.
> 
> 
> Caused by commit
> 
>   10555ba6126ed (misc: fastrpc: Replace hardcoded ctxid mask with GENMASK)
> 
> (and one of the subsequent ones that also uses those macros).  I have
> use the tree from next-20260723 instead.