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EDAC: Correct workqueue setup path

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We're using edac_mc_workq_setup() both on the init path, when
we load an edac driver and when we change the polling period
(edac_mc_reset_delay_period) through /sys/.../edac_mc_poll_msec.

On that second path we don't need to init the workqueue which has been
initialized already.

Thanks to Tejun for workqueue insights.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com
Cc: <stable@vger.kernel.org>
This commit is contained in:
Borislav Petkov 2014-02-12 18:15:00 +01:00
parent 9da21b1509
commit cb6ef42e51
1 changed files with 7 additions and 4 deletions
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11
drivers/edac/edac_mc.c
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@ -559,7 +559,8 @@ static void edac_mc_workq_function(struct work_struct *work_req)
*
* called with the mem_ctls_mutex held
*/
static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec)
static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec,
bool init)
{
edac_dbg(0, "\n");
@ -567,7 +568,9 @@ static void edac_mc_workq_setup(struct mem_ctl_info *mci, unsigned msec)
if (mci->op_state != OP_RUNNING_POLL)
return;
INIT_DELAYED_WORK(&mci->work, edac_mc_workq_function);
if (init)
INIT_DELAYED_WORK(&mci->work, edac_mc_workq_function);
mod_delayed_work(edac_workqueue, &mci->work, msecs_to_jiffies(msec));
}
@ -611,7 +614,7 @@ void edac_mc_reset_delay_period(unsigned long value)
list_for_each(item, &mc_devices) {
mci = list_entry(item, struct mem_ctl_info, link);
edac_mc_workq_setup(mci, value);
edac_mc_workq_setup(mci, value, false);
}
mutex_unlock(&mem_ctls_mutex);
@ -782,7 +785,7 @@ int edac_mc_add_mc(struct mem_ctl_info *mci)
/* This instance is NOW RUNNING */
mci->op_state = OP_RUNNING_POLL;
edac_mc_workq_setup(mci, edac_mc_get_poll_msec());
edac_mc_workq_setup(mci, edac_mc_get_poll_msec(), true);
} else {
mci->op_state = OP_RUNNING_INTERRUPT;
}