diff --git a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
index 7dd7636fc2a7be75ef47baa34fc47cca680425c2..25f76a656308ea379da74627de392e3009cf1a65 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
+++ b/drivers/hwtracing/coresight/coresight-etm4x-sysfs.c
@@ -1842,7 +1842,7 @@ static ssize_t sshot_pe_ctrl_store(struct device *dev,
 
 	spin_lock(&drvdata->spinlock);
 	idx = config->ss_idx;
-	config->ss_pe_cmp[idx] = val & GENMASK(7, 0);
+	config->ss_pe_cmp[idx] = FIELD_PREP(TRCSSPCICRn_PC_MASK, val);
 	/* must clear bit 31 in related status register on programming */
 	config->ss_status[idx] &= ~TRCSSCSRn_STATUS;
 	spin_unlock(&drvdata->spinlock);
diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h
index b4217eaab4505e998a1c68312582575e4e717ecf..3b81c104a44b0f25043971b41a5319f56e380c8f 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.h
+++ b/drivers/hwtracing/coresight/coresight-etm4x.h
@@ -218,6 +218,8 @@
 #define TRCSSCSRn_STATUS			BIT(31)
 #define TRCSSCCRn_SAC_ARC_RST_MASK		GENMASK(24, 0)
 
+#define TRCSSPCICRn_PC_MASK			GENMASK(7, 0)
+
 /*
  * System instructions to access ETM registers.
  * See ETMv4.4 spec ARM IHI0064F section 4.3.6 System instructions