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s390/ftrace: avoid pointer arithmetics with function pointers 

Pointer arithmetics with function pointers is not really defined, but
seems to do the right thing. Let's cast to a void pointer to have a
defined behaviour, at least when using gcc.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Heiko Carstens 2013-09-06 19:16:14 +02:00
parent 63df41d663
commit 5eb8ae503e
1 changed files with 2 additions and 2 deletions
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4
arch/s390/kernel/ftrace.c
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@ -178,7 +178,7 @@ int ftrace_enable_ftrace_graph_caller(void)
offset = ((void *) prepare_ftrace_return - offset = ((void *) prepare_ftrace_return -
(void *) ftrace_graph_caller) / 2; (void *) ftrace_graph_caller) / 2;
return probe_kernel_write(ftrace_graph_caller + 2, return probe_kernel_write((void *) ftrace_graph_caller + 2,
&offset, sizeof(offset)); &offset, sizeof(offset));
} }
@ -186,7 +186,7 @@ int ftrace_disable_ftrace_graph_caller(void)
{ {
static unsigned short offset = 0x0002; static unsigned short offset = 0x0002;
return probe_kernel_write(ftrace_graph_caller + 2, return probe_kernel_write((void *) ftrace_graph_caller + 2,
&offset, sizeof(offset)); &offset, sizeof(offset));
} }