From: Vineet Gupta <vgupta@synopsys.com>
Date: Mon, 20 Apr 2015 11:19:30 +0000 (+0530)
Subject: ARC: perf: don't add code for impossible case
X-Git-Tag: v4.1-rc1~28^2
X-Git-Url: https://git.kernelconcepts.de/?a=commitdiff_plain;h=d8f6ad85cbb740b7e8ca5275b12838fab685540c;p=karo-tx-linux.git

ARC: perf: don't add code for impossible case

Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
---

diff --git a/arch/arc/kernel/perf_event.c b/arch/arc/kernel/perf_event.c
index 165e0b604167..fd2ec50102f2 100644
--- a/arch/arc/kernel/perf_event.c
+++ b/arch/arc/kernel/perf_event.c
@@ -288,10 +288,7 @@ static int arc_pmu_device_probe(struct platform_device *pdev)
 	BUG_ON(pct_bcr.c > ARC_PMU_MAX_HWEVENTS);
 
 	READ_BCR(ARC_REG_CC_BUILD, cc_bcr);
-	if (!cc_bcr.v) {
-		pr_err("Performance counters exist, but no countable conditions?\n");
-		return -ENODEV;
-	}
+	BUG_ON(!cc_bcr.v); /* Counters exist but No countable conditions ? */
 
 	arc_pmu = devm_kzalloc(&pdev->dev, sizeof(struct arc_pmu), GFP_KERNEL);
 	if (!arc_pmu)