coresight-etm4: Fix for() loop drvdata->nr_addr_cmp range bug

commit bf84937e882009075f57fd213836256fc65d96bc upstream.

In etm4_enable_hw, fix for() loop range to represent address comparator pairs.

Fixes: 856561a8d1f2 ("coresight-etm4x: Adding CoreSight ETM4x driver")
Cc: stable@vger.kernel.org
Signed-off-by: Steve Clevenger <scclevenger@os.amperecomputing.com>
Reviewed-by: James Clark <james.clark@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/4a4ee61ce8ef402615a4528b21a051de3444fb7b.1677540079.git.scclevenger@os.amperecomputing.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/hwtracing/coresight/coresight-etm4x.c b/drivers/hwtracing/coresight/coresight-etm4x.c
index 83dccdeef90691983b02a02f2c49740a0227e9ec..da63e09fb0d59056e1ff617b35a353eb8792a517 100644 (file)
--- a/drivers/hwtracing/coresight/coresight-etm4x.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x.c
@@ -156,7 +156,7 @@ static int etm4_enable_hw(struct etmv4_drvdata *drvdata)
                writel_relaxed(config->ss_pe_cmp[i],
                               drvdata->base + TRCSSPCICRn(i));
        }
-       for (i = 0; i < drvdata->nr_addr_cmp; i++) {
+       for (i = 0; i < drvdata->nr_addr_cmp * 2; i++) {
                writeq_relaxed(config->addr_val[i],
                               drvdata->base + TRCACVRn(i));
                writeq_relaxed(config->addr_acc[i],