linux-kernel - [tip: irq/core] genirq/timings: Fix error return code in irq_timings_test

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Date:   Wed, 11 Aug 2021 12:36:47 -0000
From:   "tip-bot2 for Zhen Lei" <tip-bot2@...utronix.de>
To:     linux-tip-commits@...r.kernel.org
Cc:     Hulk Robot <hulkci@...wei.com>,
        Zhen Lei <thunder.leizhen@...wei.com>,
        Thomas Gleixner <tglx@...utronix.de>, x86@...nel.org,
        linux-kernel@...r.kernel.org, maz@...nel.org
Subject: [tip: irq/core] genirq/timings: Fix error return code in
 irq_timings_test_irqs()

The following commit has been merged into the irq/core branch of tip:

Commit-ID:     290fdc4b7ef14e33d0e30058042b0e9bfd02b89b
Gitweb:        https://git.kernel.org/tip/290fdc4b7ef14e33d0e30058042b0e9bfd02b89b
Author:        Zhen Lei <thunder.leizhen@...wei.com>
AuthorDate:    Wed, 11 Aug 2021 17:33:32 +08:00
Committer:     Thomas Gleixner <tglx@...utronix.de>
CommitterDate: Wed, 11 Aug 2021 14:33:35 +02:00

genirq/timings: Fix error return code in irq_timings_test_irqs()

Return a negative error code from the error handling case instead of 0, as
done elsewhere in this function.

Fixes: f52da98d900e ("genirq/timings: Add selftest for irqs circular buffer")
Reported-by: Hulk Robot <hulkci@...wei.com>
Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20210811093333.2376-1-thunder.leizhen@huawei.com

---
 kernel/irq/timings.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/kernel/irq/timings.c b/kernel/irq/timings.c
index d309d6f..59affb3 100644
--- a/kernel/irq/timings.c
+++ b/kernel/irq/timings.c
@@ -794,12 +794,14 @@ static int __init irq_timings_test_irqs(struct timings_intervals *ti)
 
 		__irq_timings_store(irq, irqs, ti->intervals[i]);
 		if (irqs->circ_timings[i & IRQ_TIMINGS_MASK] != index) {
+			ret = -EBADSLT;
 			pr_err("Failed to store in the circular buffer\n");
 			goto out;
 		}
 	}
 
 	if (irqs->count != ti->count) {
+		ret = -ERANGE;
 		pr_err("Count differs\n");
 		goto out;
 	}