irqchip/qcom: Fix u32 comparison with value less than zero

The comparison of u32 nregs being less than zero is never true since
nregs is unsigned. Fix this by making nregs a signed integer.

Fixes: f20cc9b00c7b ("irqchip/qcom: Add IRQ combiner driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: kernel-janitors@vger.kernel.org
Cc: Jason Cooper <jason@lakedaemon.net>
Link: https://lkml.kernel.org/r/20171117183553.2739-1-colin.king@canonical.com

diff --git a/drivers/irqchip/qcom-irq-combiner.c b/drivers/irqchip/qcom-irq-combiner.c
index 6aa3ea4792148d057b9b5d766acd0a7dd5813979..f31265937439608314bf55d70665b55a299a4666 100644 (file)
--- a/drivers/irqchip/qcom-irq-combiner.c
+++ b/drivers/irqchip/qcom-irq-combiner.c
@@ -238,7 +238,7 @@ static int __init combiner_probe(struct platform_device *pdev)
 {
        struct combiner *combiner;
        size_t alloc_sz;
-       u32 nregs;
+       int nregs;
        int err;
 
        nregs = count_registers(pdev);