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dccp: Fix compile warning in probe code.

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Commit 1386be55e32a3c5d8ef4a2b243c530a7b664c02c ("dccp: fix
auto-loading of dccp(_probe)") fixed a bug but created a new
compiler warning:

net/dccp/probe.c: In function ‘dccpprobe_init’:
net/dccp/probe.c:166:2: warning: the omitted middle operand in ?: will always be ‘true’, suggest explicit middle operand [-Wparentheses]

try_then_request_module() is built for situations where the
"existence" test is some lookup function that returns a non-NULL
object on success, and with a reference count of some kind held.

Here we're looking for a success return of zero from the jprobe
registry.

Instead of fighting the way try_then_request_module() works, simply
open code what we want to happen in a local helper function.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2011-12-01 14:45:49 -05:00
parent 65698610f5
commit d984e6197e
1 changed files with 12 additions and 2 deletions
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14
net/dccp/probe.c
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@ -152,6 +152,17 @@ static const struct file_operations dccpprobe_fops = {
.llseek = noop_llseek, .llseek = noop_llseek,
}; };
static __init int setup_jprobe(void)
{
int ret = register_jprobe(&dccp_send_probe);
if (ret) {
request_module("dccp");
ret = register_jprobe(&dccp_send_probe);
}
return ret;
}
static __init int dccpprobe_init(void) static __init int dccpprobe_init(void)
{ {
int ret = -ENOMEM; int ret = -ENOMEM;
@ -163,8 +174,7 @@ static __init int dccpprobe_init(void)
if (!proc_net_fops_create(&init_net, procname, S_IRUSR, &dccpprobe_fops)) if (!proc_net_fops_create(&init_net, procname, S_IRUSR, &dccpprobe_fops))
goto err0; goto err0;
try_then_request_module((ret = register_jprobe(&dccp_send_probe)) == 0, ret = setup_jprobe();
"dccp");
if (ret) if (ret)
goto err1; goto err1;