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powerpc/32: Remove powerpc specific definition of 'ptrdiff_t'

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For unknown reason, old commit d27dfd388715 ("Import pre2.0.8")
changed 'ptrdiff_t' from 'int' to 'long'.

GCC expects it as 'int' really, and this leads to the following
warning when building KFENCE:

  CC      mm/kfence/report.o
In file included from ./include/linux/printk.h:7,
                 from ./include/linux/kernel.h:16,
                 from mm/kfence/report.c:10:
mm/kfence/report.c: In function 'kfence_report_error':
./include/linux/kern_levels.h:5:18: warning: format '%td' expects argument of type 'ptrdiff_t', but argument 6 has type 'long int' [-Wformat=]
    5 | #define KERN_SOH "\001"  /* ASCII Start Of Header */
      |                  ^~~~~~
./include/linux/kern_levels.h:11:18: note: in expansion of macro 'KERN_SOH'
   11 | #define KERN_ERR KERN_SOH "3" /* error conditions */
      |                  ^~~~~~~~
./include/linux/printk.h:343:9: note: in expansion of macro 'KERN_ERR'
  343 |  printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
      |         ^~~~~~~~
mm/kfence/report.c:213:3: note: in expansion of macro 'pr_err'
  213 |   pr_err("Out-of-bounds %s at 0x%p (%luB %s of kfence-#%td):\n",
      |   ^~~~~~

<asm-generic/uapi/posix-types.h> defines it as 'int', and
defines 'size_t' and 'ssize_t' exactly as powerpc do, so
remove the powerpc specific definitions and fallback on
generic ones.

Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Segher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/e43d133bf52fa19e577f64f3a3a38cedc570377d.1617616601.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2021-04-05 09:57:27 +00:00 committed by Michael Ellerman
parent b27dadecdf
commit c46bbf5d2d
1 changed files with 0 additions and 5 deletions
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5
arch/powerpc/include/uapi/asm/posix_types.h
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@ -12,11 +12,6 @@
typedef unsigned long __kernel_old_dev_t;
#define __kernel_old_dev_t __kernel_old_dev_t
#else
typedef unsigned int __kernel_size_t;
typedef int __kernel_ssize_t;
typedef long __kernel_ptrdiff_t;
#define __kernel_size_t __kernel_size_t
typedef short __kernel_ipc_pid_t;
#define __kernel_ipc_pid_t __kernel_ipc_pid_t
#endif