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authorDan Carpenter <dan.carpenter@oracle.com>2012-10-10 07:18:35 (GMT)
committerRobert Richter <robert.richter@amd.com>2012-10-15 12:38:24 (GMT)
commit44009105081b51417f311f4c3be0061870b6b8ed (patch)
tree54393572716c0bc3341bdd413c913744f8a8e771 /arch/x86/oprofile
parentddffeb8c4d0331609ef2581d84de4d763607bd37 (diff)
downloadlinux-44009105081b51417f311f4c3be0061870b6b8ed.tar.xz
oprofile, x86: Fix wrapping bug in op_x86_get_ctrl()
The "event" variable is a u16 so the shift will always wrap to zero making the line a no-op. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: <stable@vger.kernel.org> v2.6.32.. Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'arch/x86/oprofile')
-rw-r--r--arch/x86/oprofile/nmi_int.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/oprofile/nmi_int.c b/arch/x86/oprofile/nmi_int.c
index 26b8a85..48768df 100644
--- a/arch/x86/oprofile/nmi_int.c
+++ b/arch/x86/oprofile/nmi_int.c
@@ -55,7 +55,7 @@ u64 op_x86_get_ctrl(struct op_x86_model_spec const *model,
val |= counter_config->extra;
event &= model->event_mask ? model->event_mask : 0xFF;
val |= event & 0xFF;
- val |= (event & 0x0F00) << 24;
+ val |= (u64)(event & 0x0F00) << 24;
return val;
}