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tools lib traceevent: fix pointer-integer size mismatch

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The scsi and cfg80211 plugins cast between unsigned long long and
pointers, which is problematic for architectures where unsigned long
long is wider than the native pointer size:

  linux/tools/lib/traceevent/plugin_scsi.c: In function ‘process_scsi_trace_parse_cdb’:
  linux/tools/lib/traceevent/plugin_scsi.c:408:26: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
    scsi_trace_parse_cdb(s, (unsigned char *) args[1], args[2]);

  linux/tools/lib/traceevent/plugin_cfg80211.c: In function ‘process___le16_to_cpup’:
  linux/tools/lib/traceevent/plugin_cfg80211.c:11:18: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
    uint16_t *val = (uint16_t *) args[0];

This patch adds an intermediate cast to unsigned long, silencing the
warning.

Signed-off-by: Mark Rutland <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Acked-by: Steven Rostedt <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: Will Deacon <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
This commit is contained in:
Mark Rutland 2014-01-15 10:44:07 +00:00 • committed by Arnaldo Carvalho de Melo
commit 0e9e79a13a
2 changed files with 2 additions and 2 deletions
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2
tools/lib/traceevent/plugin_cfg80211.c
View file

@ -8,7 +8,7 @@ static unsigned long long
process___le16_to_cpup(struct trace_seq *s,
unsigned long long *args)
{
uint16_t *val = (uint16_t *) args[0];
uint16_t *val = (uint16_t *) (unsigned long) args[0];
return val ? (long long) le16toh(*val) : 0;
}

2
tools/lib/traceevent/plugin_scsi.c
View file

@ -405,7 +405,7 @@ scsi_trace_parse_cdb(struct trace_seq *p, unsigned char *cdb, int len)
unsigned long long process_scsi_trace_parse_cdb(struct trace_seq *s,
unsigned long long *args)
{
scsi_trace_parse_cdb(s, (unsigned char *) args[1], args[2]);
scsi_trace_parse_cdb(s, (unsigned char *) (unsigned long) args[1], args[2]);
return 0;
}