diff --git a/drivers/net/ethernet/sfc/ef10.c b/drivers/net/ethernet/sfc/ef10.c
index 2f2bda68d861492cc6f42cbe27ca9b0cf0f46b80..c08034154a9ae6e8707daa73e1977cfae306da81 100644
--- a/drivers/net/ethernet/sfc/ef10.c
+++ b/drivers/net/ethernet/sfc/ef10.c
@@ -6115,7 +6115,7 @@ static int efx_ef10_mtd_probe_partition(struct efx_nic *efx,
 static int efx_ef10_mtd_probe(struct efx_nic *efx)
 {
 	MCDI_DECLARE_BUF(outbuf, MC_CMD_NVRAM_PARTITIONS_OUT_LENMAX);
-	DECLARE_BITMAP(found, EF10_NVRAM_PARTITION_COUNT);
+	DECLARE_BITMAP(found, EF10_NVRAM_PARTITION_COUNT) = { 0 };
 	struct efx_mcdi_mtd_partition *parts;
 	size_t outlen, n_parts_total, i, n_parts;
 	unsigned int type;