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w1 - call request_module with w1 master mutex unlocked #407

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Oct 23, 2013
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w1 - call request_module with w1 master mutex unlocked #407

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3 changes: 3 additions & 0 deletions drivers/w1/w1.c
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Original file line number Diff line number Diff line change
Expand Up @@ -680,7 +680,10 @@ static int w1_attach_slave_device(struct w1_master *dev, struct w1_reg_num *rn)
atomic_set(&sl->refcnt, 0);
init_completion(&sl->released);

/* slave modules need to be loaded in a context with unlocked mutex */
mutex_unlock(&dev->mutex);
request_module("w1-family-0x%0x", rn->family);
mutex_lock(&dev->mutex);

spin_lock(&w1_flock);
f = w1_family_registered(rn->family);
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