powerpc/vio: Add missing unlock in error path
Add an unlock before exiting the function. A simplified version of the semantic patch that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression E1; identifier f; @@ f (...) { <+... * spin_lock_irq (E1,...); ... when != E1 * return ...; ...+> } // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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@ -645,8 +645,10 @@ void vio_cmo_set_dev_desired(struct vio_dev *viodev, size_t desired)
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found = 1;
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break;
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}
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if (!found)
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if (!found) {
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spin_unlock_irqrestore(&vio_cmo.lock, flags);
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return;
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}
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/* Increase/decrease in desired device entitlement */
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if (desired >= viodev->cmo.desired) {
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