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clk: at91: system: don't try to free_irq when there is no IRQ
In the error path of at91_clk_register_system(), sys->irq is freed unconditionally but it may not exist or be request at all. Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com> Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
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@ -138,7 +138,8 @@ at91_clk_register_system(struct at91_pmc *pmc, const char *name,
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clk = clk_register(NULL, &sys->hw);
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if (IS_ERR(clk)) {
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free_irq(sys->irq, sys);
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if (irq)
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free_irq(sys->irq, sys);
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kfree(sys);
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}
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